stage tool

专利摘要:
STAGE TOOL. The present invention generally relates to a stage tool. In one aspect, a downhole tool for use in a downhole is provided. The tool includes a body that has a hole. The tool also includes a seal assembly attached to the body. The sealing assembly has an expandable annular member, a sealing member and an expansion jacket, where the sealing member includes one or more anti-extrusion spring bands embedded in the sealing member. The tool also includes a slide assembly attached to the body. The slide assembly includes slides that are configured to engage the well hole.
公开号:BR112013020983B1
申请号:R112013020983-6
申请日:2012-02-16
公开日:2021-01-05
发明作者:Rocky A. Turley；Brent J. Lirette；Huy V. Le；George Givens
申请人:Weatherford Technology Holdings Llc；
IPC主号:

专利说明:

CROSS REFERENCE TO RELATED ORDERS
This application claims the benefit of the provisional patent application for serial number US 61 / 563,016, filed on November 22, 2011, and the patent application for serial number US 13 / 029,022, filed on February 16, 2011. 2011. Each of the patent applications listed above is incorporated into this document for reference. BACKGROUND OF THE INVENTION Field of the Invention
The modalities of the present invention generally refer to a downhole expansion assembly. More particularly, the embodiments of the present invention relate to seals for the mounting of downhole expansion.
Description of the Related Art
In the oilfield industry, downhole tools are used in the borehole at different stages of well operation. For example, an expandable liner hanger can be used during the well formation stage. After a first casing column in the well hole, the well is drilled to a designated depth and a liner assembly is placed in the well at a depth so that the upper portion of the liner assembly is superimposed on a lower portion of the first coating column. The lining assembly is fixed to the well hole by extending a lining hanger in the surrounding lining and then cementing the lining assembly into the well. The ceiling hanger includes sealing members and an outer surface of the ceiling hanger. The sealing members are configured to create a seal with the surrounding lining by expanding the ceiling hanger.
In another example, a shutter can be used during the production stage of the well. The plug typically includes a plug assembly with sealing members. The plug can seal an annular space formed between the production piping within the casing of the well hole. Alternatively, some obturators seal an annular space between the outside of a non-lined borehole and pipe. Routine use of shutters includes protection of the casing against pressure, both well pressures and stimulation, and protection of the casing bore against corrosive fluids. The obturators can also be used to retain suppression fluids or treatment fluids in the annular coating space.
Both the ceiling hanger and the plug include sealing members that are configured to create a seal with the surrounding liner or a non-lined borehole. Each sealing member is typically arranged in a groove (or gland) formed in an expandable tubular assembly of the ceiling hanger or plug. However, the sealing member can be removed from the groove during the expansion of the expandable tubular assembly due to the characteristics of the sealing member. In addition, the sealing member can be removed from the groove after the expansion of the expandable tubular assembly due to the pressure differentials applied to the sealing member. Therefore, there is a need for extrusion-resistant seals for use with an expandable tubular assembly. SUMMARY OF THE INVENTION
The present invention generally relates to an anchor seal for an expandable tubular assembly. In one aspect, an anchor seal assembly for creating a seal portion and an anchor portion between a first tube that is disposed within a second tube is provided. The anchor seal assembly includes an expandable annular member attached to the first pipe. The annular member has an outer surface and an inner surface. The anchoring seal assembly also includes a sealing member arranged in a groove formed on the outer surface of the expandable annular member. The sealing member has one or more anti-extrusion spring bands incorporated within the sealing member, where the outer surface of the expandable annular member adjacent the groove includes a rough surface. The anchor seal assembly also includes an expansion jacket that has a tapered outer surface and an inner hole. The expansion jacket is movable between a first position in which the expansion jacket is arranged outside the expandable annular member and a second position in which the expansion jacket is arranged inside the expandable annular member, in which the expansion jacket is located. expansion is configured to radially expand the expandable annular member in contact with an inner wall of the second tube to create the sealing portion and the anchor portion as the expansion jacket moves from the first position to the second position.
In another aspect, a method for creating a sealing portion and an anchor portion between a first pipe and a second pipe is provided. The method includes the step to position the first tube within the second tube. The first tube has an annular member with a groove and a rough external surface, in which a sealing member with at least one anti-extrusion band is arranged within the groove and in which a gap is formed between one side of the sealing member and one side of the groove. The method further includes the step of expanding the annular member radially outwardly, which causes the at least one anti-extrusion band to move towards an interface area between the first tube and the second tube. The method also includes the step of impelling the annular member in contact with an inner wall of the second tube to create a sealing portion and the anchor portion between the first tube and the second tube.
In another aspect, a seal assembly for creating a seal between a first tube and a second tube is provided. The sealing assembly includes an annular member attached to the first tube, in which the annular member has a groove formed on the outer surface of the annular member. The sealing assembly also includes a sealing member arranged in the groove, in which the sealing member has one or more anti-extraction bands. The sealing member is configurable to be radially expandable outwardly in contact with an inner wall of the second tube by applying an outwardly directed force supplied to an inner surface of the annular member. In addition, the seal assembly includes a gap defined between the sealing member and a side of the groove.
In another aspect, a method for creating a seal between a first tube and a second tube is provided. The method includes the step of positioning the first tube within the second tube, where the first tube has an annular member with a groove, where a sealing member with at least one anti-extrusion band is disposed within the groove and in which a gap it is formed between one side of the sealing member and one side of the groove. The method also includes the stage of expansion of the annular member radially outward, which causes the first anti-extrusion band and the second anti-extrusion band to move towards a first interface area and a second interface area between the annular member and the second tube. The method also includes the step of propelling the blind member in contact with an inner wall of the second tube to create the blind between the first tube and the second tube.
In yet another aspect, a seal assembly to create a seal between a first tube and a second tube is provided. The sealing assembly includes an annular member attached to the first tube, in which the annular member has a groove formed on its external surface. The sealing assembly also includes a sealing member arranged in the groove of the annular member so that one side of the sealing member is spaced apart from one side of the groove, where the sealing member has one or more anti-extrusion bands, in that the one or more anti-extraction bands move towards an interface area between the annular member and the second tube by expanding the annular member.
In an additional aspect, a hanger assembly is provided. The suspension assembly includes an expandable annular member that has an outer surface and an inner surface. The suspension assembly also includes a sealing member arranged in a groove formed on the external surface of the expandable annular member, in which the sealing member has one or more anti-extrusion spring bands incorporated within the sealing member. The hanger assembly also includes an expansion layer that has a tapered outer surface and an inner hole. The expansion jacket is movable between a first position where the expansion jacket is arranged outside the expandable annular member and a second position in which the expansion jacket is arranged inside the expandable annular member. The expansion jacket is configured to radically expand the expandable annular member as the expansion jacket moves from the first position to the second position.
In an additional aspect, a downhole tool for use in a downhole is provided. The tool includes a body that has a hole. The tool also includes a seal assembly attached to the body. The sealing assembly that has an expandable annular, a sealing member and an expansion jacket, in which the sealing member includes one or more anti-extrusion spring strips incorporated within the sealing member. The tool also includes a slide assembly attached to the body. The slide assembly includes slides that are configured to engage the well hole.
In an additional aspect, a downhole tool for use in a downhole is provided. The tool includes a tube that has a tapered outer surface. The tool also includes an expandable annular member disposed in the tube. The expandable member has a portion of anchor. The tool also includes a sealing member arranged in a groove in the expandable annular member. The sealing member has one or more anti-extrusion bands, in which the sealing member and the anchor portion are configured to extend radially outwardly in contact with the well hole as the expandable annular member moves along the conical outer surface. the tube. BRIEF DESCRIPTION OF THE DRAWINGS
So that the features cited above of the present invention can be understood in detail, a more particular description of the invention, briefly summarized above, can be made reference to modalities, some of which are illustrated in the attached drawings. It should be noted, however, that the attached drawings illustrate only typical modalities of this invention and should not, therefore, be considered limiting its scope, for the invention other equally effective modalities may be admitted. The patent or application file contains at least one drawing executed in color. Copies of this patent or patent application publication with colored drawing (s) will be provided by the Office upon request and payment of the necessary fee.
Figure 1 illustrates a view of an expandable hanger in an inserted (disabled) position.
Figure 2 shows a view of an expandable hanger seal assembly.
Figure 3 illustrates a view of the seal assembly during expansion of the expandable hanger.
Figures 4A and 4B illustrate a view of the seal assembly after expansion of the expandable hanger.
Figure 5 illustrates an enlarged view of the seal assembly before expansion.
Figure 6 illustrates an enlarged view of the seal assembly after expansion.
Figures 7 to 10 illustrate views of different modalities of the seal assembly.
Figure 11 illustrates a view of a downhole tool in a well.
Figure 12 illustrates a view of the downhole tool in an inserted position.
Figure 13 illustrates a view of a packing element in the downhole tool.
Figure 14 illustrates a view of the downhole tool in an expanded and operating position.
Figure 15 shows an enlarged view of the coupling element in the downhole tool.
Figure 16 illustrates a view of a hanger assembly in a disabled position.
Figure 17 illustrates a view of the hanger assembly in an activated position.
Figure 18 illustrates a view of an installation tool used during a dry seal stretch operation.
Figure 19 shows a view of a loading tool with the seal ring.
Figure 20 illustrates a view of an expandable hanger loading tool.
Figure 21 illustrates a view of a pressure plate that prevents the seal ring in an expandable hanger gland.
Figures 22 and 22A illustrate views of a clogging stage tool.
Figures 23, 23A and 23B illustrate the activation of slides in the stage tool.
Figures 24, 24A and 24B illustrate the activation of packing elements in the stage tool.
Figures 25, 25A and 25B illustrate the movement of an outer jacket on the stage tool.
Figures 26 and 26A illustrate the closing of the doors in the stage tool after the cementation operation is completed.
Figures 27 and 27A illustrate views of a downhole tool in an inserted (disabled) position.
Figures 28 and 28A illustrate the definitions of slides in the downhole tool.
Figures 29 and 29A illustrate the definitions of a packing element in the downhole tool.
Figures 30 and 30A illustrate views of a downhole tool in an inserted (disabled) position.
Figures 31 and 31A illustrate a downhole tool in an inserted (disabled) position.
Figures 32 and 32A illustrate the downhole tool in an activated position. DETAILED DESCRIPTION
The present invention generally relates to extrusion-resistant seals for a downhole tool. Extrusion-resistant seals will be described in this document in relation to a ceiling hanger in Figures 1 to 10, a plug in Figures 11 to 15 and a hanger assembly in Figures 16 to 17. It should be understood, however , that extrusion-resistant seals can also be used with other downhole tools without departing from the principles of the present invention. In addition, extrusion-resistant seals can be used in a downhole tool that is disposed inside a coated well hole or inside an open hole well hole. In order to better understand the innovation of the extrusion-resistant seals of the present invention and the methods of using them, reference is now made to the attached drawings.
Figure 1 illustrates a view of an expandable hanger 100 in an inserted (disabled) position. In the completion stage shown in Figure 1, a well hole 65 was lined with a lining column 60. Therefore, a subsequent lining assembly 110 is positioned close to the lower end of lining 60. Typically, the lining assembly 110 is lowered into the well bore 65 by a seating tool arranged at the lower end of the working column 70.
The lining assembly 110 includes a tube 165 and the expandable hanger 100 of this invention. The hanger 100 is a ring member that is used to secure or suspend the tube 165 from an inner wall of the liner 60. The expandable hanger 100 includes a plurality of seal assemblies 150 arranged on the outer surface of the hanger 100. The plurality of seal assemblies 150 are spaced circumferentially around the hanger 100 to create a seal between the liner assembly 110 and the liner 60 by expanding the hanger 100. Although the hanger 100 in Figure 1 shows four seal assemblies seal 150, any number of seal assemblies 150 can be attached to the lining assembly 110 without departing from the principles of the present invention.
Figure 2 shows an enlarged view of the seal assemblies 150 in the inserted position. For clarity, well hole 65 is not shown in Figures 2 to 6. Each seal assembly 150 includes a seal ring 135 arranged in a gland 140. Gland 140 includes a first side 140A, a second side 140B and a third 140C. In the embodiment shown in Figure 2, a bonding material, such as glue (or other fixing means), can be used on sides 140B, 140C during the manufacturing stage of the seal assembly 150 to fix the seal ring 135 in gland 140. Attaching sealing ring 135 to gland 140 is useful to prevent sealing ring 135 from becoming unstable and being removed by piston when the hanger 100 is positioned in the liner 60 and before the expansion of the hanger 100. In one embodiment, side 140A has an α angle (see Figure 5) of approximately 100 degrees before expansion and side 140A has an β angle (see Figure 6) between about 94 degrees and about 98 degrees after expansion of the seal assembly 150.
As shown in Figure 5, a span of volume 145 is created between the sealing ring 135 and the side 140A of the gland 140. In general, the span of volume 145 is used to substantially prevent distortion of the sealing ring 135 by expanding of the hanger 100. The volume span 145 is a free space (void, gap or void) between a portion of the seal ring 135 and a portion of the gland 140 before the expansion of the hanger 100. In other words, during the process of manufacturing of the hanger, the span of volume 145 is created by positioning the sealing ring 135 within the gland 140 so that the sealing ring 135 is spaced away from at least one side of the gland 140. Although the span of volume 145 in Figure 5 is created with one side of the gland 140 at an angle, the volume span 145 can be created in any configuration (see Figures 7 to 10, for example) without departing from the principles of the present invention. Additionally, the size of the volume span 145 may vary depending on the configuration of the gland 140. In one embodiment, the gland 140 has 3 to 5% more volume due to the volume span 145 than a standard gland without a volume span.
Referring again to Figure 2, the sealing ring 135 includes one or more anti-extrusion bands, such as a first screening band 155 (first anti-extrusion band) and a second sealing band 160 (second anti-extrusion band). As shown, the sealing strips 155, 160 are incorporated into the sealing ring 135 in a top corner on each side of the sealing ring 135. In one embodiment, the sealing strips 155, 160 are arranged in a circumference sealing ring 135. In another embodiment, sealing bands 155, 160 are springs. The sealing strips 155, 160 can be used to limit the extrusion of the sealing ring 135 during the expansion of the sealing assembly 150. The sealing strips 155, 160 can also be used to limit the extrusion of the differential pressure. applied after expansion of the seal assembly 150.
Figure 3 shows a view of the seal assemblies 150 during expansion and Figures 4A and 4B illustrate the seal assemblies 150 after expansion. As shown, an axially mobile expansion tool 175 contacts an inner surface 180 of the lining assembly 110. Expansion tools are well known in the art and are generally used to radially expand an expandable tube by pushing the tool of expansion 175 axially through the tube, thus causing the tubular wall to piston radially outward as the larger diameter tool is forced through the smaller diameter tubular member. Expansion tool 175 can be attached to a threaded mandrel that is rotated to move expansion tool 175 axially through the hanger 100 and expand the hanger 100 out in contact with the liner 60. It is to be understood, however, that another means can be employed to propel the expansion tool 175 through the hanger 100 such as hydraulics or any other means known in the art. In addition, the expansion tool 175 can be arranged on the hanger 100 in any orientation, such as in a downward orientation as shown for a top-down expansion or in an upward orientation for a bottom-up expansion. In addition, an expandable rotary tool (not shown) can be used. The swiveling expandable tool moves between a smaller first diameter and a second larger diameter, thus allowing for both top-down and bottom-up expansion depending on the directional axial movement of the swiveling expandable tool.
As shown in Figure 3, the expansion tool 175 has expanded a portion of the hanger 100 towards the liner 60. During the expansion of the hanger 100, the seal ring 135 moves in contact with the liner 60 to create a seal between the hanger 100 and the liner 60. As the seal ring 135 comes into contact with the liner 60, the seal ring 135 changes the configuration and occupies a portion of the volume span 145. In the mode shown, the volume span 145 is located on the side of the seal assembly 150 which is the first vapor to be expanded by the expansion tool 175. The location of the volume gap 145 in the seal assembly 150 allows the seal ring 135 to change position ( or reconfigure) inside the gland 140 during the expansion operation. In addition, the volume of the volume span 145 may change during the expansion operation. As shown in Figure 4B, the expansion tool 175 is removed from the hanger 100 after the hanger 100 is expanded in contact with the liner 60.
O-ring 135 changes the configuration during the expansion operation. As shown in Figure 5, the seal ring 135 has a volume that is represented by the reference number 190. Before expansion, a portion of the volume 190 of the seal ring 135 is positioned inside the gland 140 and another portion of the volume 190 of the seal ring 135 extends outside the gland 140 (in addition to line 195). After expansion, volume 190 of seal ring 135 is repositioned so that seal ring 135 moves to the span of volume 145 as shown in Figure 6. In other words, volume 190 of seal ring 135 it is substantially the same before the expansion and after the expansion. However, the volume of the seal ring 135 inside the gland 140 increases after the expansion operation due to the fact that the portion of volume 190 of the seal ring 135 that was outside the gland 140 (in addition to line 195) moved inside the gland 140 (compare Figures 5 and 6). Thus, the volume 190 of the seal ring 135 is substantially within the gland 140 after the expansion operation. In an alternative embodiment, the seal ring 135 does not extend outside the gland 140 (in addition to line 195) before expansion. The volume 190 of the seal ring 135 is repositioned during the expansion operation so that the ring seal 135 moves to the volume span 145. The volume 190 of the seal ring 135 is substantially the same before expansion and after expansion. In this way, the seal ring 135 changes the configuration during the expansion operation and occupies (or closes) the volume gap 145.
The volume of the gland 140 and / or the span of volume 145 may decrease as the seal assembly 150 is expanded radially outwardly during the expansion operation. As shown in this document, angle α (Figure 5) decreases to angle β (Figure 6), which causes the size of the volume span 145 to decrease. The height of gland 140 can also become smaller, which causes the volume of gland 140 to decrease. As such, the combination of the change in seal ring configuration 135 and the change in gland volume setting 140 (and / or volume gap 145) allows seal ring 135 to create a seal with sheath 60. In In one embodiment, the volume of gland 140 (including the span of volume 145) after the expansion operation can be substantially the same as volume 190 of seal ring 135. In another mode, the volume of gland 140 ( including volume span 145) after the expansion operation may be equal to volume 190 of seal ring 135 or may be greater than volume 190 of seal ring 135.
As shown in Figure 6, the sealing bands 155, 160 on the sealing ring 135 are driven towards an interface 185 between the sealing assembly 150 and the liner 60 during the expansion operation. The span of volume 145 allows the sealing ring 135 to move inside the gland 140 and positions the sealing bands 155, 160 in a location close to the interface 185. In that position, the sealing bands 155, 160 substantially prevent the sealing ring extrusion 135 passes the interface 185. In other words, the sealing bands 155, 160 expand radially outward with the hanger 100 and block the elastomeric material of the sealing ring 135 that flows through the interface 185 between the seal assembly 150 and the liner 60. In one embodiment, the sealing strips 155, 160 are springs, such as toroidal spiral molds, which expand radially outward due to the expansion of the hanger 100. As the spring expands radially outward, the coils of the spring act as a barrier for the flow of elastomeric material from the sealing ring 135. In this way, the sealing bands 155, 160 on the sealing ring 135 act as a device anti-extrusion or u an extrusion barrier.
There are several benefits of the extrusion barrier created by the sealing strips 155, 160. One benefit of the extrusion barrier could be that the outer surface of the sealing ring 135 in contact with the liner 60 is limited to a region between the sealing bands 155, 160, which allows a high pressure seal to be created between the seal assembly 150 and the liner 60. In one embodiment, the seal assembly 150 can create a high pressure seal in the range of 82 74 to 96.53 MPa (12,000 to 14,000 psi). An additional benefit of the extrusion barrier could be that the seal assembly 150 is capable of creating a seal with a surrounding coating that may have a range of internal diameters due to API tolerances. Another benefit could be that the extrusion barrier created by the sealing bands 155, 160 can prevent erosion of the sealing ring 135 after the hanger 100 has been expanded. Erosion of the seal ring 135 could eventually lead to a malfunction of the seal assembly 150. An additional benefit is that the sealing bands 155, 160 act as an extrusion barrier after the expansion of the expandable hanger 100. More specifically, the extrusion barrier created by the sealing bands 155, 160 can prevent the extrusion of the sealing ring 135 when the gap between the expandable hanger 100 and the liner 60 is increased due to downhole pressure. In other words, the sealing strips 155, 160 span the gap and the liquid extrusion gap between spirals of the sealing strips 155, 160 grows considerably less compared to an annular gap that is formed when a sealing ring does not include the strips sealing. For example, the annular gap (without the sealing bands) can be in the order of 0.762 millimeter (0.030 inch) radial in comparison to the liquid extrusion gap between the spirals of the sealing bands 155, 160 which can be in the order of 0.0254 / 0.0762 millimeter (0.001 / 0.003 inch).
Figures 7 to 10 illustrate views of different modalities of the seal assembly. For convenience, the components in the seal assembly in Figures 7 to 10 that are similar to the components in the seal assembly 150 will be identified with the same numerical indicator. Figure 7 illustrates a view of a seal assembly 205 that includes volume span 145 in a lower portion of seal assembly 205. As shown, volume span 145 is between side 140C and seal ring 135. In this one embodiment, a bonding material, such as glue, can be applied to the sides 140A, 140B during the manufacturing stage of the seal assembly 205 to secure the seal ring 135 to the gland 140. Similar to other embodiments, the seal ring 135 it will be reconfigured and will occupy at least a portion of the volume span 145 by expanding the seal assembly 205.
Figure 8 illustrates a view of a seal assembly 220 that includes volume span 145 in a lower portion and a top portion of seal assembly 220. As shown, a first volume span 145A is between side 140A and the sealing ring 135 and a second span of volume 145B is between side 140C and the sealing ring 135. The first span of volume 145A and the second span of volume 145B may be the same or may be different. In this embodiment, the bonding material can be applied to side 140B during the manufacturing stage of the seal assembly 220 to fix the seal ring 135 to the gland 140. Similar to the other modalities, the seal ring 135 will be reconfigured and it will occupy at least a portion of the first span of volume 145A and at least a portion of the second span of volume 145B by expanding seal assembly 220.
Figure 9 illustrates a view of a seal assembly 240 that includes volume span 145 with an induction member 245. As shown, side 140A of gland 140 is perpendicular to side 140B. Induction member 245, such as a spring washer or collision ring, is arranged in the volume span 145 between side 140A and sealing ring 135. Induction member 245 can be used to hold the position seal ring 135 in gland 140. In addition to sealing strip 160, induction member 245 can also act as an extrusion barrier by expanding seal assembly 240. During expansion operation, seal ring 135 will be reconfigured in gland 140 and will compress induction member 245. In addition, in this embodiment, the connection material can be used on sides 140B, 140C during the manufacturing stage of the seal assembly 240 to fix the seal ring 135 in gland 140.
Figure 10 illustrates a view of a seal assembly 260 that includes a span of volume 270 in a portion of a seal ring 265. In this embodiment, the bonding material can be used on sides 140A, 140B, 140C during the manufacture of seal assembly 260 to fix seal ring 265 to gland 140. Similar to other modalities, seal ring 265 will be reconfigured by expanding seal assembly 260. However, in this mode, the span of volume 270 in the portion of the sealing ring 265 will be closed or will decrease in size when the sealing ring 265 is pushed into contact with the surrounding coating. In another embodiment, seal ring 265 may include seal bands (not shown) incorporated in seal ring 265 similar to seal bands 155, 160. In an additional embodiment, an equalizing vent (not shown) can be formed on the seal ring 265 to provide communication between the volume span 270 and an external portion of the seal ring 265. The equalizing vent can be used to prevent the collapse of the seal ring 265 due to exposure hydrostatic pressure.
Figure 11 illustrates a view of a typical underground hydrocarbon well 90 that defines a vertical well hole 25. Well 90 has multiple formations that produce hydrocarbons, such as formation that produces oil 45 and / or formations that produce gas ( not shown). After well hole 25 is formed and lined with liner 10, a column of tubing 50 is conducted into an opening 15 formed by liner 10 to provide a path for hydrocarbons to the surface of well 90. Hydrocarbons can be recovered by forming perforations 30 in formations 45 to allow hydrocarbons to enter the coating opening 15. In the illustrative embodiment, perforations 30 are formed by operating a drilling gun 40, which is a component of the pipe column 50. Drill gun 40 is used to pierce casing 10 to allow hydrocarbons captured in formations 45 to flow to the surface of well 90.
The tubing column 50 also carries a downhole tool 300, such as a plug, bridge plug or any other downhole tool used to seal a desired location in a downhole. Although generically shown as a unique element, the downhole tool 300 can be a component assembly. In general, the downhole tool 300 can be operated by hydraulic or mechanical means and is used to form a seal at a desired location in the downhole 25. The downhole tool 300 can seal, for example, an annular space 20 formed between a production pipe 50 and the well hole casing 106. Alternatively, the well bottom tool 300 can seal an annular space between the outside of a pipe and an un-lined well hole. Common uses of the downhole tool 300 include protecting the liner 10 against pressure and corrosive fluids; insulation from coating leakage, compressed perforations or multiple production intervals; and retention of treatment fluids, heavy fluids or suppression fluids. However, these uses for the downhole tool 300 are for illustrative purposes only and the application of the downhole tool 300 is not limited to just those uses. The downhole tool 300 can also be used with a conventional ceiling hanger (not shown) in a ceiling mount. Typically, the downhole tool 300 could be positioned in the liner assembly next to the conventional liner holder. In one embodiment, the downhole tool assembly is positioned above the conventional liner hanger. After the conventional liner hanger is placed inside the downhole cover, a cementation operation can be performed. to secure the liner inside the well hole. If so, the downhole tool 300 can be activated to seal an annular space formed between the liner assembly and the downhole liner.
Figure 12 illustrates a downhole tool 300 in an inserted (disabled) position. As shown in Figure 12, the tubing column 50 includes a mandrel 305 that defines an internal diameter of the represented portion of the tubing column 50. An actuation sleeve 335 is slidably arranged over at least a portion of the mandrel 305. Mandrel 305 and actuation sleeve 335 define an interface sealed by the provision of an O-ring (not shown) transported in an outer diameter of mandrel 305. An end end of actuation sleeve 335 is held against a wedge member 325. The wedge member 325 is generally cylindrical and slidably arranged over mandrel 305. An O-ring seal 310 is arranged between mandrel 305 and wedge member 325 to form an interface between them. The seal 310 is carried on the inner surface of the wedge member 325; however, seal 310 can also be carried on the outer surface of mandrel 305. In one embodiment, seal 310 includes sealing bands (i.e., anti-extrusion bands) in a similar manner as sealing element 450A and B. In addition , a volume span can be defined between seal 310 and a portion of the wedge member 325 in a similar manner to volume span 470A and B.
The downhole tool 300 includes a locking mechanism that allows the wedge member 325 to travel in one direction and prevents travel in the opposite direction. In one embodiment, the locking mechanism is deployed as a ratchet ring 380 disposed on a ratchet surface 385 of mandrel 305. Ratchet ring 380 is embedded and carried by wedge member 325. In this case, the interface of the ratchet 380 and ratchet surface 385 allows the leg member 325 to travel only in the direction of arrow 315.
A portion of the wedge member 325 forms an outer tapered surface 375. In operation, the tapered surface 375 forms an inclined glide surface for a packing element 400. In this way, the wedge member 325 is shown disposed between the mandrel 305 and the packing element 400, wherein the packing element 400 is arranged on the conical surface 375. In the inserted position shown, the packing element 400 is located at one end of the wedge member 325, where the tip defines a relatively smaller outside diameter in relation to the other end of the conical surface 375.
The packing element 400 is held in place by a retaining sleeve 320. The packing element 400 can be coupled to the retaining sleeve 320 by a variety of locking interfaces. In one embodiment, the retaining sleeve 320 includes a plurality of pincer fingers 355. The terminal ends of the pincer fingers 355 are interlocked with an annular flap 405 of the packing element 400. The pincer fingers 355 can be induced in a radial direction. For example, it is contemplated that the clamp fingers 355 have radial outward induction that impels the clamp fingers 355 in an extended or straight position. However, in this case, the clamp fingers 355 do not provide sufficient force to cause the packing element 400 to expand.
The downhole tool 300 includes a self-adjusting locking mechanism that allows the retaining sleeve 320 to travel in one direction and prevents travel in the opposite direction. The locking mechanism is implanted as a ratchet ring 390 disposed on a ratchet surface 395 of the mandrel 305. The ratchet ring 390 is embedded and carried by the retaining sleeve 320. In this case, the interface of the ratchet ring 390 and the ratchet surface 395 allows the retaining sleeve 320 to travel only in the direction of arrow 330, relative to mandrel 305. As will be described in more detail below, this self-adjusting locking mechanism ensures that sufficient sealing is maintained by the packing element 400 in spite of the opposing forces that present to subvert the integrity of the seal.
In operation, the downhole tool 300 is placed in a downhole in the inserted position shown in Figure 12. To place the downhole tool 300, the actuation sleeve 335 is driven axially in the direction of the arrow 315 The axial movement of the actuation sleeve 335 can be caused by, for example, mechanical force applied from the weight of a pipe column or hydraulic pressure acting on a piston. The actuation sleeve 335, in turn, engages the wedge member 325 and drives the wedge member 325 axially along the outer surface of the mandrel 305. The ratchet ring 380 and the ratchet surface 385 ensure that the member wedge 325 travel only in the direction of the arrow 315. With the continuation of the path on the mandrel 305, the sleeve member 325 is activated under the packing element 400. The packing element 400 is prevented from moving relative to the wedge member 325 by the provision of the ratchet ring 390 and the ratchet surface 395. As a result, the packing element 400 is forced to slide on the conical surface 375. The positive inclination of the conical surface 375 impels the packing element 400 to a diametrically expanded position. The activated position of the downhole tool 300 is shown in Figure 14. In the activated position, the packing element 400 rests on an upper end of the conical surface 375 and is propelled in contact with the coating 10 to form a special seal. - fluid tank that is formed in part by a metal-to-elastomer seal and a metal-to-metal contact. More generally, the metal can be any non-elastomer.
In the activated position, the clamp fingers 355 are radially expanded outwards, but remain interlocked with the flap 405 formed in the packing element 400. This coupling fixes the position of the retaining pad 320 and ratchet ring 390 in the position axial packing element 400. This allows the packing element 400 to move to the wedge member 325 in response to increased pressure from below, keeping its interface firm with the inner diameter of the coating, but prevents the relative movement of packing element 400 in the opposite direction (shown by arrow 315). The bottom pressure of the downhole tool 300 can act to decrease the integrity of the seal formed by the packing element 400 since the interface of the packing element 400 with the liner 10 and the sleeve member 325 will loosen due to the pressure that expands the coating 10 and similarly acting to cause collapse of the wedge member 325 below the packing element 400. A modality of the downhole tool 300 is against such undesirable effect by the provision of the self-adjusting locking implanted by ratchet ring 390 and ratchet surface 395. In particular, the retaining sleeve 320 is allowed to run through mandrel 305 in the direction of arrow 330 in response to a stimulation force acting on packing element 400, as shown in Figure 15. However, the locking mechanism prevents the retaining sleeve 320 from traveling in the opposite direction (that is, in the direction of arrow 315), thus ensuring q ue the seal does not move in relation to the liner 10 when the pressure is acting from above, thus reducing wear on the packing element 400.
Figure 13 shows an enlarged view of the locking element 400 in the deactivated position. As such, the packing element 400 rests on the diametrically smaller end of the conical surface 375. The packing element 400 includes a tubular body 440 which is an annular member. The tubular body 440 includes an outer surface that is substantially smooth in its outer diameter and which defines a molded inner diameter. In this context, a person skilled in the art will recognize that a desired smoothness of the outer surface is determined according to the particular environment and circumstances in which the packing element 400 is activated. For example, the pressures that are expected to be resisted by the resulting seal formed by the packing element 400 will affect the smoothness of the outer surface. In one embodiment, the tubular body 440 may include a portion of the outer surface that includes knurling or a rough surface area that can be used as an anchor portion when the packing element 400 is positioned.
To form a seal in relation to the liner 10, the packing element 400 includes one or more sealing elements 450A and B. The sealing elements 450A and B can be elastic bands. In another embodiment, the sealing elements 450A and B are expansion elastomers. The sealing elements 450A and B are preferably stuck in grooves 455A and B formed in the tubular body 440. For example, the sealing elements 450A and B can be connected to the grooves 455A to B by a connection material during the packing stage of packing element 400. Each groove 455A and B includes volume span 470A and B. As shown in Figure 13, volume span 470A and B is located in a lower portion of groove 455A and B. In other ways, the volume span 470A and B can be located in different positions and in different configurations in the groove 455A and B (see the volume span in Figures 5 to 10, for example). In general, the volume span 470A-B is used to substantially prevent distortion of the sealing element 450A and B by expanding the packing element 400. The size of the volume span 470A and B may vary depending on the configuration of the groove 455A and B. In one embodiment, groove 455A and B has 3 to 5% more volume due to the volume span 470A and B than a groove without a volume span.
Each sealing element 450A and B includes a first sealing strip 460 and a second sealing strip 465. The sealing strips 460, 465 are incorporated into sealing element 450A and B. In one embodiment, sealing strips 460 , 465 are springs. The sealing strips 460, 465 are used to limit the extrusion of the sealing element 450A and B by expanding the packing element 400.
The portions of the outer surface between the sealing elements 450A and B form non-elastomer sealing surfaces 430A and C. Non-elastomer sealing surfaces 430A-C can include gripping members, such as carbide inserts, serrations or a super - rough surface that allows sealing surfaces of non-elastomer 430A to C to seal and act as an anchor by expanding the packing element 400. For example, the anchor portion (ie, rough surface on surfaces 430A to C) could contact and engage the surrounding liner 10 when packing element 400 is activated, as shown in Figure 15. The anchor portion can be used to hold packing seals 450A and B in place preventing the movement of the packing element 400. In other words, the anchor portion ensures that the packing sealing elements 450A and B do not move in relation to the coating 10 when subjected high differential pressure, thus allowing the packing seals 450A and B to maintain the sealing relationship with the liner 10 while at the same time reducing wear on the packing element 400. In one embodiment, surfaces 430A to C are induction-hardened or similar means so that surfaces 430A to C penetrate an internal surface of the liner 10 to provide a robust anchoring means when the packing element 400 is activated. In this way, the anchor portion can be used to assist the axial movement of the packing seals 450A and B in relation to the liner 10 when the packing seals 450A and B are subjected to high differential pressure.
The anchor portion (that is, the rough surface on surfaces 430A to C) can be used in place of a gripping member (not shown) on the downhole tool 300. Instead of having a separate gripping member , like slides, in the downhole tool 300, the anchor portion can be configured to retain the downhole tool 300 within the liner 10, thereby reducing the number of components in the downhole tool 300 and reducing the overall length of the downhole tool 300. Other benefits of using the anchor portion (instead of separate slides) could be that the overall stroke length of the downhole tool 300 could be reduced; elimination of potential leak paths and maintenance costs could be reduced without compromising performance. The length and / or size of the surfaces 430A to C can be arranged in such a way that when the packing element 400 is activated, a sufficient gripping force is created between the anchor portion and the surrounding coating 10 to support the downhole tool 300 within the downhole. Surfaces 430A to C can also be hardened by induction so that surfaces 430A to C penetrate the surface of the liner 10 to provide a robust anchoring means by activating the packing element 400. As discussed in this document in relation to to Figures 13 to 15, the wedge member 325 slides in relation to the mandrel 305 to a position under the tubular body 440 to expand the packing element 400 radially outwardly in contact with the coating 10. In another embodiment, the wedge member 325 and mandrel 305 are formed as a single member (not shown) with a tapered surface, thus eliminating the need for seal 310 and creating a thicker portion of the downhole tool 300 next to the packing 400. In addition, the tubular body 440 could be configured to move along the conical surface of the single member to expand the packing element 400 radially outwardly. touch with coating 10.
The number and size of sealing elements 450A and B define the surface area of non-elastomer sealing surfaces 430A to C. It should be noted that any number of sealing elements 450A and B and non-elastomer sealing surfaces 430A to C can be supplied. The packing element 400 shown includes two sealing elements 450A and B and defining three sealing surfaces of non-lastomer 430A to C. In general, a relatively narrow width of each sealing surface of non-elastomer 430A to C is preferential in order to achieve a surface contact force between the surfaces and the coating 10.
The molded internal diameter of the tubular body 440 is defined by a plurality of ribs 475 separated by a plurality of cuts 480 (e.g., voids). The cuts 480 allow a degree of deformation of the tubular body 440 when the packing element 400 is placed in a sealed position. In addition, cuts 480 assist in reducing the amount of activating force required to expand packing element 400 to the sealed position. In other words, by removing the material (for example, cuts 480) from the tubular body 440, the force required to expand the packing element 400 is reduced. In one embodiment, the volume of cuts 480 (empty) is between 25 to 40% of the volume of the tubular body 440. These ribs 475 are annular members integrally formed as part of the tubular body 440. Each rib 475 forms an actuator contact surface 485 in the inner diameter of the tubular body 340, where the rib 475 is arranged on the conical surface 375. In an illustrative embodiment, the conical surface 375 has an angle Y between about 2 degrees and about 6 degrees. In this way, the molded internal diameter defined by the 485 actuator contact surfaces can have a substantially similar taper angle.
The tubular body 440 also includes an O-ring seal 495 in the cut 490. The seal 495 is configured to form a fluid-tight seal in relation to the outer tapered surface 375 of the sleeve member 325. In one embodiment, seal 495 includes sealing bands (i.e., anti-extrusion bands) in a similar manner to sealing element 450A and B. In addition, a volume span can be defined between seal 495 and a portion of cut 490 in a similar manner to the span of volume 470A and B. It is noticed that in another modality, the cuts 480 can also, or alternatively, carry seals in their respective internal diameters.
In Figure 15, the packing element 400 is shown in the sealed (activated) position, corresponding to Figure 14. During expansion of the packing element 400, the sealing element 450A and B moves in contact with the coating 10 to create a sealing between packing element 400 and sheath 10. As sealing element 450A and B comes in contact with sheath 10, sealing element 450A and B changes the configuration and occupies a portion of volume span 470A and B. In the mode shown, the volume span 470A and B is located on the side of the packing element 400, which is the last portion to be expanded by the wedge member 325. The location of the volume span 470A and B on the packing element 400 allows sealing element 450A and B to change position (or reconfigure) within groove 455A and B during the expansion operation. Additionally, the volume of the 470A and B span may change during the expansion operation. In one embodiment, the volume of the volume span 470A and B can be reduced by 5 to 15% during the expansion operation.
During the expansion operation, the sealing strips 460, 465 on the sealing element 450A and B are pushed towards an interface 415 between the packing element 400 and the coating 10, as shown in Figure 6. The span volume 470A and B allows the sealing element 450A and B to move inside the groove 455A and B and positions the sealing bands 460, 465 in a location close to interface 415. In comparison to the volume span 470A and B before the expansion (Figure 13) and after the expansion (Figure 15), a small volume span remains after the expansion operation. It should be noted that the small volume span is optional. In other words, there may not be a small volume span (see volume span 470A and B in Figure 15) after the expansion operation.
Sealing strips 460, 465 are configured to substantially prevent extrusion of sealing element 450A and B after interface 415. In other words, sealing strips 460, 465 expand radially outward with packing element 400 and block the elastomeric material of the sealing element 450A and B that flows through the interface 415 between the packing element 400 and the liner 10. In one embodiment, the sealing bands 460, 465 are springs, such as toroidal spiral springs, which expand radially outward due to expansion of the packing element 400. As the spring expands radially outward during the expansion operation, the spring coils act as a barrier to the flow of elastomeric material from the sealing 450A and B. After the expansion operation, sealing bands 460, 465 can prevent the sealing element 450A and B from extruding when a gap between packing element 400 and the liner 10 is increased due to downhole pressure. In other words, sealing strips 460, 465 span the gap between packing element 400 and liner 10 and prevent extrusion of sealing element 450A and B. In this way, sealing strips 460, 465 on it - sealing device 450A and B act as an anti-extrusion device or an extrusion barrier during the expansion operation and after the expansion operation.
There are several benefits of the extrusion barrier created by the sealing strips 460, 465. One benefit of the extrusion barrier could be that the outer surface of the sealing element 450A and B in contact with the coating 10 is limited to a region between the sealing bands 460, 465, which allows a high pressure seal to be created between the packing element 400 and the liner 10. In one embodiment, the packing element 400 can create a high pressure seal in the range of 82 .74 to 103.42 MPa (12,000 to 15,000 psi). An additional benefit of the extrusion barrier could be that the packing element 400 is able to create a seal with a surrounding coating that can have a range of internal diameters due to API tolerances. Another benefit could be that the extrusion barrier created by the sealing bands 460, 465 can prevent erosion of the sealing element 450A and B after the packing element 400 has been expanded. Erosion of the sealing element 450A and B could eventually lead to a malfunction of the packing element 400.
The packing element 400 rests on the diametrically enlarged end of the conical surface 375 and is sandwiched between the wedge member 325 and the casing 10. The dimensions of the downhole tool 300 are preferably such that the packing element 400 is fully engaged with the liner 10, before the tubular body 440 reaches the end of the conical surface 375. Note that in the sealed position, the sealing elements 450A and B and the non-elastomeric sealing surfaces 430A to C were expanded in contact with coating 10.
As such, it is clear that the tubular body 440 has undergone a degree of deformation. The deformation process can occur, at least in part, as the packing element 400 slides up to the conical surface 375, before making contact with the inner diameter of the coating 10. In addition or alternatively, the deformation can occur as a result of contact with the inner diameter of the liner 106. In any case, the deformation process causes the sealing elements 450A and B and the non-elastomeric sealing surfaces 430A to C to contact the inner diameter of the liner 10 in the sealed position. Additionally, non-elastomeric support seals prevent the extrusion of sealing elements 450A and B.
Figure 16 illustrates a suspension assembly 500 in a disabled position. At the completion stage shown in Figure 16, a well hole was lined with a coating column 80. Therefore, the suspension assembly 500 is positioned within the coating 80. The suspension assembly 500 includes a suspension 530, which is a member cancel. The hanger assembly further includes an expansion jacket 510. Typically, the hanger assembly 500 is lowered into the well hole by a seating tool arranged at the bottom end of a working column (not shown).
The hanger assembly 500 includes the hanger 530 of this invention. The hanger 530 can be used to fix and suspend liners from an inner wall of the liner 80. The hanger 530 can also be used as a patch to seal an annular space formed between the hanger mount 500 and the powder hole liner. Ø 80 or an annular space between 500 suspension mount and an uncapped well hole. The suspension 530 optionally includes gripping members, such as tungsten carbide inserts and slides. The gripping members can be arranged on an outer surface of the 530 hanger. The gripping members can be used to secure an inner surface of the liner 80 by expanding the 530 hanger.
As shown in Figure 16, the hanger 530 includes a plurality of seal assemblies 550 arranged on the outer surface of a tubular body of the hanger 530. The plurality of seal assemblies 550 are circumferentially spaced around the hanger 530 to create a seal between the hanger assembly 500 and the liner 80. Each seal assembly 550 includes a seal ring 535 arranged in a gland 540. A bonding material, such as glue (or other fastening means), can be used in Selective sides of gland 540 to fix seal ring 535 to gland 540. The connection of seal ring 535 to gland 540 is useful to prevent seal ring 535 from becoming unstable and being removed by piston when the hanger 530 it is positioned in the casing 80 and before the expansion of the hanger 530. The connection of the sealing ring 535 to the gland 540 is also useful to resist the piston removal of the flow of circulation since the installation of ceilings typically requires uer displacement of fluid before sealing and anchoring the suspension assembly 500.
The side of the gland 540 creates a gap of volume 545 between the seal ring 535 and the gland 540. As shown in this document, the volume gap 545 is generally used to minimize distortion of the seal ring 535 by expanding the hanger 530. The volume span 545 can be created in any configuration (see Figures 7 to 10, for example) without departing from the principles of the present invention. In addition, the size of the volume span 545 may vary depending on the configuration of the gland 540. Sealing ring 535 includes a first sealing band 555 and a second sealing band 560. Sealing bands 555, 560 are incorporated on opposite sides of seal ring 535. Seal bands 555, 560 are used to limit extrusion of seal ring 535 during and after expansion of seal assembly 550.
The hanger assembly 500 includes the expansion jacket 510 which is used to expand the hanger 530. In one embodiment, the expansion jacket 510 is attached to the hanger 530 by an optional release member 520, such as a shear pin. Expansion jacket 510 includes a tapered outer surface 515 and a bore 525. Expansion pad 510 further includes an end portion 505 that is configured to interact with an actuating member (not shown). The expansion sleeve 510 optionally includes a self-adjusting locking mechanism (not shown) that allows the retaining sleeve 510 to travel in one direction and prevents travel in the opposite direction.
To activate the suspension assembly 500, the actuating member is driven axially in one direction towards the suspension 530. The axial movement of the actuating member can be induced by, for example, mechanical force applied from the weight of a pipe column. or hydraulic pressure acting on a piston. The actuating member, in turn, engages the end portion 505 of the expansion jacket 510 in order to move the expansion path 510 axially towards the hanger 530. At a predetermined force, the optional release member 520 is disengaged, which allows the expansion jacket 510 to move in relation to the holder 530. The hanger 530 is prevented from moving in relation to the wedge expansion jacket 510. According to the conical outer surface 515 of the jacket Expansion 510 engages the inner surface of the hanger 530, the hanger 530 is moved to a diametrically expanded position.
The activated position of the suspension assembly 500 is shown in Figure 17. In the activated position, the expansion jacket 510 is positioned inside the suspension 530. In other words, the expansion jacket 510 is not removed from the suspension 530. This arrangement can allow that the expansion jacket 510 applies a force to the hanger 530 after the expansion operation. The hole 525 of the expansion jacket 510 allows other well hole tools to pass through the suspension assembly 500 before the expansion of the suspension 530 and after the expansion of the suspension 530. In the comparison between the suspension assembly 500 in the disabled position (Figure 16) and the suspension assembly 500 in the activated position (Figure 17), it should be noted that the expansion jacket 510 is disposed substantially outside the suspension 530 in the disabled position and the expansion jacket 510 is arranged inside the hanger 530 in the activated position. Expansion jacket 510 remains inside the hanger 530 after the expansion operation is completed. As such, expansion jacket 510 is configured to support hanger 530 after the expansion operation.
As shown in Figure 17, the hanger 530 is propelled in contact with the liner 80 to form a fluid tight seal that is formed in part by a metal to elastomer seal and a metal to metal contact. More specifically, seal ring 535 moves in contact with liner 80 to create a seal between hanger 530 and liner 80. As seal ring 535 comes into contact with liner 80, seal ring 535 changes the configuration and occupies a portion of the volume span 545. In the embodiment shown, the volume span 545 is located on the side of the seal assembly 550 which is the first portion to be expanded by the expansion sleeve 510. The location of the span span volume 545 in seal assembly 550 allows seal ring 535 to change position (or reconfigure) within gland 540 during expansion operation. In addition, the sealing strips 555, 560 on the sealing ring 535 are pushed towards an interface between the sealing assembly 550 and the liner 80 to block the elastomeric material of the sealing ring 535 flowing through the interface. 585 between the seal assembly 550 and the casing 80. In one fashion, the sealing bands 555, 560 are springs, such as toroidal springs, which expand radially outward due to the expansion of the 530 hanger. As the spring expands radially outward during the expansion operation, the spirals of the current spring as a barrier to the flow of elastomeric material from the seal ring 535. In addition, after the expansion of the suspension 530, the seal bands 555, 560 can prevent the sealing ring 535 from extruding when the gap between the suspension assembly 500 and the liner 80 is increased due to pressure. In other words, the sealing strips 155, 160 span the gap and the liquid extrusion gap between spirals of the sealing strips 155, 160 grows considerably less compared to an annular gap that is formed when a sealing ring does not include the strips sealing. In this way, the sealing bands 555, 560 on the sealing ring 535 act as an anti-extrusion device or an extrusion barrier during the expansion operation and after the expansion operation.
Figure 18 illustrates a view of an installation tool 600 for use in a dry seal stretch operation. The seal ring 135 is installed in the gland 140 during the manufacturing process of the hanger 100 by the dry seal stretch operation. Installation tool 600 generally includes a taper tool 675, a loading tool 625 and a pressure plate 650. A low friction cover can be used in the dry seal stretch operation to reduce friction between the sealing ring 135 and the installation tool components 600. In one embodiment, the low-friction cover can be applied to a portion of a cone 610 of the conical tool 675 and a portion of a flap 630 on the loading tool 625 In another mode, the low friction cover can be applied to a portion of the seal ring 135. The low friction cover can be a dry lubricant, such as Impregion or Teflon®.
As shown in Figure 18, seal ring 135 is moved up to cone 610 of taper tool 675 in the direction indicated by arrow 620. Taper tool 675 is configured to change seal ring 135 from a first configuration that has a first inner diameter to a second configuration that has a larger second inner diameter (for example, stretching of the seal ring). As shown, the loading tool 625 is positioned on a small diameter portion 640 of the taper tool 675 so that the flap 630 can receive the sealing ring 135. The loading tool 625 is attached to the taper tool 675 by a plurality of connection members 615, such as screws. After the sealing ring is in the second configuration, the sealing ring 135 is moved to the flap 630 of the loading tool 625.
Figure 19 illustrates a view of loading tool 625 with seal ring 135. Loading tool 625 and pressure plate 650 are removed from end 615 of conical tool 600 in the direction indicated by arrow 645. In general, loading tool 625 is an annular tool that is configured to receive and retain seal ring 135 in the second configuration (for example, large internal diameter). Figure 20 illustrates a view of the loading tool 625 and the pressure plate 650 on the expandable hanger 100. The loading tool 625 is positioned on the hanger 100 so that the tab 630 of the loading tool 625 (and seal ring 135) is located adjacent to the gland 140. Therefore, the loading tool 625 is attached to the hanger 100 by the plurality of connection members 615. Before positioning the sealing ring 135 in the gland 140, a connection material such as glue , is applied to the selective sides of gland 140.
Figure 21 shows a view of the pressure plate 650 and the loading tool 625. During the dry seal stretching operation, the pressure plate 650 engages the sealing member 135 as per the pressure plate 650 it is moved in a direction indicated by arrow 665. The pressure plate pushes the seal ring 135 out of the flap 630 of the loading tool 625 and into the gland 140 of the hanger 100. This sequence of steps can be repeated for each ring. seal 135.
As mentioned in this document, the packing element 400 can be used with different downhole tools. For example, packing element 400 can be used as a support for an inflatable or compression element, or in conjunction with a stage tool, or integrated with a clogging stage tool. Figures 22 and 22A illustrate an example of the packing element with a clogging stage tool 700. For convenience, components in stage 700 that are similar to components in the downhole tool 300 will be identified with the same indicator numeric. The stage tool 700 is attached to the casing 85 and countersunk in the well hole 75. The stage tool 700 is used during a carburizing operation to inject cement into an annular space 795 formed between the casing 85 and the well hole. 75 at locations specified in well bore 75. As shown, stage tool 700 includes packing element 400, cone expansion 325, a mechanical piston assembly 725 and slides 705.
As shown in Figure 22, stage tool 700 includes slides 705 and a calibrating ring 755. slides 705 are configured to run along calibrator ring 755 by activating slides 705. stage 700 also includes a self-adjusting locking mechanism that allows slides 705 to travel in one direction and prevents travel in the opposite direction. The locking mechanism is deployed as a lower locking ring 760. Upon activation, slides 705 are configured to secure well hole 75 to support stage tool 700 in well hole 75.
In another embodiment, an anchor portion (i.e., rough surface on surfaces 430A to C on packing element 400) can be used in place of slides 705 to support stage tool 700 in well hole 75, thereby reducing the number of components in the stage tool 700 and reducing the overall length of the stage tool 700. As shown in this document, the length and / or size of surfaces 430A to C can be arranged so that when the packing 400 is activated, a sufficient clamping force is created between the anchor portion and the surrounding borehole 75 to support the downhole tool 300 within the borehole 75. Surfaces 430A to C can also be induction hardened so that the surfaces 430A to C penetrate the surface of the well hole 75 to provide a robust anchoring means by activating the packing element 400.
Figure 22A illustrates a top end view of stage tool 700. As shown, stage tool 700 includes an inner jacket 710 with ports 745 and a body member 730 with ports 750. As will be described in this document. , the inner liner 710 is configured to move relative to the body member 730 to align the ports 745, 750 and thus create a fluid path between an inner portion and an outer portion of the stage tool 700. The stage 700 also includes a closing seat 715 and an opening seat 720. The stage tool 700 also includes an upper locking ring 740 that is fixed to a housing by means of shear screws 735. Additionally, the stage tool 700 includes an outer jacket 790.
As shown in Figure 22A, a plug 775 is disposed in the stage tool 700. After the stage tool 700 is located in the well hole 75, the plug 775 is released in the stage tool 700. The plug 775 moves through from a hole 765 of the stage tool 700 until it comes into contact with the opening seat 720 in the liner 710. The plug 775 is configured to block fluid communication through hole 765 of the stage tool 700.
Figures 23, 23A and 23B illustrate the activation of slides 705 in stage tool 700. After plug 775 blocks fluid communication through hole 765 of stage 700 tool, the fluid pumped from the surface creates pressure of fluid into hole 765 of stage tool 700. At a predetermined pressure, the inner liner 710 moves relative to the body member 730 until ports 745 on the inner layer 710 align with ports 750 on the body member .
After ports 745, 750 are aligned, the fluid in hole 765 can flow through ports 745, 750 to a fluid passage 770 to activate packing element 400 and slides 705. The fluid moving through the passage fluid 770 generates a fluid pressure which causes the mechanical piston assembly 725 to apply a force to the wedge member 325 which is subsequently applied to the retaining liner 320. The force on the retaining liner 325 causes the pin shearing 785 breaks and allows slides 705 to move along calibrator ring 755. Movement of slides 705 in a first direction relative to calibrator ring 755 causes slides 705 to move radially outward and engage the well bore 75, as shown in Figure 23B. The self-adjusting locking mechanism (i.e. locking ring 760) prevents the slides on the 705 slides from traveling in a second opposite direction. Slides 705 and packing element 400 are configured so that the force to break shear pin 785 is less than the force to move packing element 400 along expansion cone 325. As a result, shear pin 785 breaks and slides 705 move along calibrator ring 755 before the packing element 400 moves along expansion cone 325. After slides 705 have been activated, retainer 325 moves under the packing element 400, as shown in this document.
The packing element 400 can be configured so that a force of a pre-selected magnitude is required in order to radially expand it during the shutter activation process. This radial expansion is affected by the axial movement of the wedge member 325 in relation to the packing element 400. Therefore, due to the angle of inclination of the wedge member 325 and friction between the wedge member 325 and the packing element 400, the radial force necessary to radially expand the packing element 400 can be correlated to a corresponding axial force that must be applied to the wedge member 325 in order to achieve relative movement between the wedge member 325 and the packing element 400. Therefore, there are a limit axial force that must be applied to the wedge member 325 in order to radially expand the packing element 400.
In operation, an axial force can be applied to the wedge member 325 (and, therefore, in the packing element 400) which is less than that limit axial force. In such cases, the applied axial force is communicated from the wedge member 325 to the packing element 400 and from the packing element 400 to the clamp fingers 355 and the retaining sleeve 320 without the packing element 805 undergoes any expansion. - are radial (or any substantial radial expansion). Therefore, such an applied axial force less than the limit axial force can be applied through the packing element 400 in order to affect the operation of another tool and / or another part of the same tool, such as activation slides 705 as described in this document.
In addition, in operation, an axial force can be applied to the wedge member 325 (and, thus, in the packing element 400) which is greater than the aforementioned limit axial force. In such cases, if there is little or no space available for packing element 400, the clamp fingers 355 and the retaining sleeve 320 move axially, then the wedge member 325 can move relative to each other. to the packing element 400. In this way, the wedge member 325 is forced further under the packing element 400, resulting in radial expansion of the packing element 400, which can continue until the packing element 400 has been moved into position. activated in the well bore.
In another embodiment, the aforementioned limit axial force can be pre-selected including a lock and / or a shearable fixation between the wedge member 325 and the packing element 400. Limit axial force can be pre-selected selected by the configuration and (for example) selection of construction materials of the packing element 400 alone, or in combination with the configuration and selection of a suitable lock and / or shear clamping between the wedge member 325 and the element packing box 400.
In practice, for example, the aforementioned limit axial force can be around 4.54 tonnes (10,000 lbs), although other magnitudes above or below this are contemplated and can be customized to suit specific applications.
Figures 24, 24A and 24B illustrate the activation of packing element 400 in stage tool 700. After slides 705 have engaged well hole 75, the fluid pressure generated by the fluid moving through the fluid passage 770 makes with the mechanical piston assembly 725 activating the packing element 400. In a similar manner as described in this document, the wedge member 325 is pushed under the tubular body 440 of the packing element 400. As a result, the packing element packing block 400 moves radially outwardly in contact with well hole 75 and a seal is formed between stage tool 700 and well hole 75.
Figures 25, 25A and 25B illustrate the movement of outer jacket 790 of stage tool 700. After packing element 400 and slides 705 have engaged well hole 75, the fluid pressure generated by the moving fluid through the fluid passage 770 it causes the outer jacket 790 to move in relation to the body member 730. The movement of the outer jacket 790 exposes ports 745, 750, as shown in Figure 25A. The exposure of ports 745, 750 opens the passage of fluid between hole 765 of stage tool 700 and the annular space 795 formed between stage tool 700 and well hole 75. Cement can be pumped through the hole 765, doors 745, 750 and annular space 795 during cementing operation. After the carburizing operation is completed, the closing plug 780 is released on stage tool 700.
Figures 26 and 26A illustrate the closing of doors 745, 750 of stage tool 700 after the carburizing operation is completed. The closing plug 780 moves through hole 765 of the stage tool 700 until it comes in contact with the closing seat 715 attached to the inner jacket 710, as shown in Figure 26A. The closing plug 780 is configured to block fluid communication through hole 765 of the stage 700 tool. The fluid pumped from the surface creates a fluid pressure within hole 765 of the stage 700 tool. predetermined, inner liner 710 moves relative to body member 730 until ports 745 on inner liner 710 are out of alignment with ports 750 on body member 730. At that point, the fluid in hole 765 may no longer flow through ports 745, 750; thus, the fluid passage between bore 765 and annular space 795 is closed.
Figures 27 and 27A illustrate a downhole tool 800 in an inserted (disabled) position. The downhole tool 800 can be used to seal a desired location in a downhole. For convenience, components in tool 800 that are similar to components in tool 300 will be identified with the same numeric indicator. Tool 800 includes slide assembly 850 and packing element 805.
Slide assembly 850 includes slides 840 and a wedge member 845. Wedge member 845 is generally cylindrical and slidably arranged over mandrel 305. The downhole tool 800 includes a locking mechanism that allows wedge member 845 to travel in one direction (arrow 865) and prevents travel in the opposite direction (arrow 870). In one embodiment, the locking mechanism is deployed as a ratchet ring 390 is arranged on a ratchet surface 395 of mandrel 305. Ratchet ring 390 is lowered and carried by jacket 320. In this case, the ring interface ratchet 390 and ratchet surface 395 allows jacket 320 and sleeve member 845 to travel only in the direction as indicated by arrow 865. As shown, jacket 320 is attached to wedge member 845 by a claw 890 and the liner is fixed to the chuck 305 by an 875 shear pin.
The packing element 805 includes a tubular body 440, which is an annular member. The tubular body 440 includes an optional gripping member 810 with a claw surface 815. Gripping member 810 is configured to engage the liner 10 by activating the packing element 805. If in a similar manner as described in this document , the wedge member 325 is configured to move axially along the outer surface of the mandrel 305. The packing element 805 is prevented from moving in relation to the wedge member 325. As a result, the packing element 805 is forced to slide place on the tapered surface of the wedge member 325. The positive inclination of the tapered surface impels the packing element 805 to a diametrically expanded position.
The packing element 805 can be configured so that a force of a pre-selected magnitude is required in order to radially expand it during the shutter activation process. This radial expansion is affected by the axial movement of the wedge member 325 in relation to the packing element 805. Therefore, due to the angle of inclination of the wedge member 325 and friction between the wedge member 325 and the packing element 805, the radial force necessary to radially expand the packing element 805 can be correlated to a corresponding axial force that must be applied to the wedge member 325 in order to achieve relative movement between the wedge member 325 and the packing element 805. Therefore, there are a limit axial force that must be applied to the wedge member 325 in order to radially expand the packing element 805.
In operation, an axial force can be applied to the wedge member 325 (and, therefore, in the packing element 805) which is less than that limit axial force. In such cases, the applied axial force is communicated from the wedge member 325 to the packing element 805 and from the packing element 805 to the clamp fingers 355 and the retaining sleeve 320 without the packing element 805 undergoes any expansion. - are radial (or any substantial radial expansion). Therefore, such an applied axial force less than the limit axial force can be applied through the packing element 805 in order to affect the operation of another tool and / or another part of the same tool, such as activation slides 840 as described hereinafter.
In addition, in operation, an axial force can be applied to the wedge member 325 (and, therefore, to the packing element 805) which is greater than the aforementioned limit axial force. In such cases, if there is little or no space available for the packing element 805, the clamp fingers 355 and the retaining sleeve 320 move axially, then the wedge member 325 can move relative to each other. to the packing element 805. In this way, the wedge member 325 is forced further under the packing element 805, resulting in radial expansion of the packing element 805, which can continue until the packing element 805 has been moved into position activated in the well bore.
In another embodiment, the aforementioned limit axial force can be preselected including a lock and / or a shearable fixation between the wedge member 325 and the packing element 805. Limit axial force can be pre-selected selected by the configuration and (for example) selection of construction materials of the 805 packing element alone, or in combination with the configuration and selection of a suitable lock and / or shear clamping between the wedge member 325 and the element packing box 805.
In practice, for example, the aforementioned limit axial force can be around 44.48 kN (10,000 lbs), although other magnitudes above or below this are contemplated and can be customized to suit specific applications. .
Figures 28 and 28A illustrate the activation of slides 840 on tool 800. In the mode shown, the activation sequence for tool 800 is to activate slide assembly 850 (Figure 28A) and then activate the element packing line 805 (Figure 29A). In another way, the packing element 805 can be activated and then the slide assembly 850 can be activated.
To activate the suspension assembly 850, the actuation sleeve (not shown) is driven axially in the direction of arrow 865. The movement of the actuation sleeve can be induced by, for example, mechanical force applied from the weight of a column of piping or hydraulic pressure acting on a piston. The actuation sleeve applies a force to the wedge member 325, which drives the wedge member 325 axially along the outer surface of the mandrel 305. The movement of the sleeve 320 along the outer surface of the mandrel 305 towards the wedge member 845 causes the 875 shear pin to break. Thus, the liner 320 moves along the mandrel 305, thus allowing the claw 890 to be released. The liner 320 moves until a surface 880 of the liner 320 contacts an end surface 885 of the wedge member 845 (compare Figures 27A and 28A). At that point, jacket 320 pushes wedge member 845 under slides 845. As a result, slides 840 expand radially outwardly and engage lining 10.
Figures 29 and 29A illustrate the activation of the packing element 805 in the tool 800. After the slide assembly 850 has been activated, the packing element 805 is activated. To activate the packing element 805, the actuation sleeve drives the wedge member 325 axially along the outer surface of mandrel 305 in a similar manner as described in this document. As the path continues over mandrel 305, wedge member 325 is driven under packing element 805. Packing element 805 is prevented from moving in relation to wedge member 325 by the ratchet ring provision 390 and the ratchet surface 395. As a result, the packing element 400 is forced to slide over the conical surface 375. The positive inclination of the conical surface impels the packing element 805 to a diametrically expanded position. As the packing element 805 expands radially outward, the gripping surface 815 of the gripping member 810 engages the well hole. The gripping member 810 can be used to hold the packing seals 450A and B in place by preventing movement of the packing element 805. In other words, the gripping member 810 ensures that the sealing elements packing lines 450A and B do not move in relation to the coating 10 when subjected to high differential pressure, thus allowing the packing seals 450A and B to maintain the sealing relationship with the coating 10. In one embodiment, the gripping surface 815 is hardened by induction or similar means so that the gripping surface 815 penetrates an internal surface of the liner 10 to provide a robust anchoring means when the packing element 805 is activated. In this way, the gripping member 810 can be used to assist the resistant axial movement of the packing seals 450A and B in relation to the liner 10 when the packing seals 450A and B are subjected to high differential pressure.
Figures 30 and 30A illustrate views of a 980 downhole tool in an inserted (disabled) position. For convenience, components in tool 980 that are similar to components in tool 300 and tool 800 will be identified with the same numeric indicator. Tool 980 includes an induction member 985, such as a spring, between liner 320 and liner 855. A liner 990 is attached to liner 855 by means of a locking screw 995. Tool 980 operates in a similar manner to tool 800. The induction member is configured to apply an inductive force to the wedge member 845 after the slides 840 are activated (see Figure 28A). In other words, after the shear pin 875 breaks and the claws 890 are released, the movement of the liner 320 along the mandrel 305 causes the induction member 985 to be compressed between the liners 320, 855. A jacket 320 is locked in one direction and is able to move in the other direction due to locking mechanism 390, 395. Thus, the compressed induction member 985 applies an inductive force to the wedge member 845 (via jacket 855) . The induction force can be used to hold the wedge member 845 under slide 840 after slides 840 have been activated.
Figures 31 and 31A illustrate a downhole tool 900 in an inserted (disabled) position. For convenience, components in tool 900 that are similar to components in tool 300 will be identified with the same numeric indicator. Tool 900 includes a packing element 905 that can be used to seal a desired location in a well hole. The packing element 905 is held in place by a retaining sleeve 320. The packing element 905 can be coupled to the retaining sleeve 320 by a variety of locking interfaces. In one embodiment, the retaining sleeve 320 includes a plurality of pincer fingers 355. The end ends of the pincer fingers 355 are interlocked with an annular flap 405 of the packing element 905.
The packing element 905 includes a tubular body 440, which is an annular member. The tubular body 440 has an anchor 910 with a gripping surface 915. Anchor 910 is configured to engage the liner 10 by activating the packing element 905. Anchor 910 can be used in place of a gripping member (we do not show - auger) on the downhole tool 900. Rather than having a separate gripping member, such slides, on the downhole tool 900, anchor 910 can be configured to retain the downhole tool 900 within the liner 10, thereby reducing the number of components in the downhole tool 900 and reducing the overall length of the downhole tool 900. Other benefits of using anchor 910 (instead of separate slides) could be that the length of curved the overall depth of the downhole tool 900 could be reduced; eliminating potential leak paths and manufacturing costs could be reduced without compromising performance. The length and / or size of the gripping surfaces 915 can be arranged in such a way that when the packing element 905 is activated, a sufficient gripping force is created between the anchor 910 and the surrounding liner 10 to support the bottom tool of well 900 inside the well bore.
The downhole tool 900 includes a self-adjusting locking mechanism that allows the retaining sleeve 320 to travel in one direction and prevents travel in the opposite direction. The locking mechanism is implanted as a ratchet ring 390 disposed on a ratchet surface 395 of the mandrel 305. The ratchet ring 390 is lowered in and carried by the retaining sleeve 320. In this case, the interface of the ratchet ring 390 and the ratchet surface 395 allows the retaining sleeve 320 to travel only in the direction of arrow 965, in relation to manhole 950.
As shown in Figure 31, mandrel 950 has an outer tapered surface 955. As such, mandrel 950 has a first portion 950A with a first thickness and a second portion 950B with a second larger thickness. As will be described in this document, packing element 905 is pushed along the conical surface 955 of mandrel 950 during the activation process. The use of the conical surface 955 of the mandrel 950 to activate the packing element 905, instead of having a separate wedge member, reduces the number of components in the downhole tool 900 and reduces the overall tool length. - downhole tool 900. Other benefits of using conical surface 955 of mandrel 950 (instead of a separate wedge member) could be the elimination of potential leakage paths between the separate wedge member and mandrel and costs could be reduced without compromising performance. Another benefit of using the conical surface 955 of the mandrel 950 could be that the added thickness of the 950 mandrel provides ultra-high pressure body integrity below the 905 packing element.
Figures 32 and 32A illustrate the downhole tool 900 in an activated position. To activate the downhole tool 900, actuation sleeve 935 is driven axially in the direction of arrow 965. Axial movement of actuation sleeve 935 can be induced by, for example, mechanical force applied from the weight of a pipe or hydraulic pressure column that acts on a piston. The actuation sleeve 935, in turn, drives the retaining sleeve 320 and the packing element 905 axially along the conical surface 955 of the mandrel 950. The ratchet ring 390 and the ratchet surface 395 ensure that the sleeve retainer 320 and packing element 905 travel only in the direction of arrow 965. As the path on the mandrel 950 continues, packing element 905 moves along the conical surface 955 to a diametrically expanded position. The activated position of the downhole tool 900 is shown in Figure 32A.
In the activated position, the packing element 905 is pushed in contact with the liner 10 to form a fluid tight seal and the gripping surface 915 of anchor 910 engages the liner 10. Anchor 910 can be used to support the tool 900 in the casing 10. Additionally, anchor 910 can be used to hold packing seals 450A and B in place preventing movement of packing element 905. More specifically, anchor 910 guarantees that the packing seals 450A and B do not move relative to the liner 10 when subjected to a high differential pressure, thus allowing the packing seals 450A and B to maintain the sealing relationship with the liner 10, while at the same time reducing wear on the packing element 905. In one embodiment, the gripping surface 915 of anchor 910 is hardened by induction or similar means so that the preeing surface No 915 penetrates an internal surface of the liner 10 to provide a robust anchoring means when the engaging element 905 is activated. In this way, the anchor 910 can be used to support the tool 900 within the liner 10 and also assist the resistant axial movement of the packing seals 450A and B relative to the liner 10 when the packing seals 450A and B are subjected to high differential pressure.
In one embodiment, an anchor seal assembly to create a seal portion and an anchor portion between a first pipe that is disposed within a second pipe is provided. The anchor seal assembly includes an expandable annular member attached to the first tube. The annular member has an outer surface and an inner surface. The anchoring seal assembly further includes a sealing member arranged in a groove formed on the outer surface of the expandable annular member. The sealing member has one or more anti-extrusion spring bands incorporated within the sealing member, where the outer surface of the expandable annular member adjacent to the groove includes a rough surface. The anchor seal assembly also includes an expansion jacket that has a tapered outer surface and an inner hole. The expansion jacket is movable between a first position in which the expansion jacket is arranged outside the expandable annular member and a second position in which the expansion jacket is arranged inside the expandable annular member, in which the expansion jacket is configured to radially expand the expandable annular member in contact with an inner wall of the second tube to create the sealing portion and the anchor portion as the expansion jacket moves from the first position to the second position.
In another embodiment, a method for creating a viewing portion and an anchor portion between a first pipe and a second pipe is provided. The method includes the step of positioning the first tube within the second tube. The first tube has an annular member with a groove and a rough external surface, in which a sealing member with at least one anti-extrusion band is disposed within the groove and in which a gap is formed between one side of the sealing member and one side the groove. The method also includes the step of expanding the annular member radially outwardly, which causes the at least one anti-extrusion band to move towards an interface area between the first tube and the second tube. The method also includes the step of impelling the annular member in contact with an inner wall of the second tube to create the seal and anchor portion between the first tube and the second tube.
In one embodiment, a seal assembly for creating a seal between a first tube and a second tube is provided. The sealing assembly includes an annular member attached to the first tube, in which the annular member has a groove formed on the outer surface of the annular member. The sealing assembly also includes a sealing member arranged in the groove, in which the sealing member has one or more anti-extraction bands. The sealing member is configured to expand radially outwardly in contact with an inner wall of the second tube by applying an outwardly directed force supplied to an inner surface of the annular member. In addition, the seal assembly includes a gap defined between the sealing member and a side of the groove.
In one aspect, the span is configured to close by expanding the annular member. In another aspect, the span is configured to close completely by expanding the annular member. In an additional aspect, a portion of the sealing member is used to close the gap. In an additional aspect, the one or more anti-extrusion bands comprises a first anti-extrusion band and a second anti-extrusion band. In an additional aspect, the anti-extrusion member is incorporated in a first side of the sealing member and the second anti-extrusion band is incorporated in a second side of the sealing member. In another aspect, the first anti-extrusion band and the second anti-extrusion band are springs. In an additional aspect, the first anti-extrusion band and the second anti-extrusion band are configured to move towards a first interface area and a second interface area between the annular member and the second tube by expanding the annular member. In a further aspect, the first interface area is adjacent to a first side of the groove and the second interface area is adjacent to a second side of the groove.
In one aspect, the sealing member is configured to move into the gap by expanding the sealing member. In another aspect, a second gap is defined between the sealing member and the other side of the groove. In an additional aspect, an induction member disposed within the span. In an additional aspect, a plurality of cuts formed on an internal surface of the annular member. In another aspect, the annular member is a lining hanger. In an additional aspect, the annular member is a obturator.
In another embodiment, a method for creating a seal between a first tube and a second tube is provided. The method includes the step of positioning the first tube within the second tube, where the first tube has an annular member with a groove, where a sealing member with at least one anti-extrusion band is disposed within the groove and in which a gap it is formed between one side of the sealing member and one side of the groove. The method also includes the stage of expansion of the annular member radially outward, which causes the first anti-extrusion band and the second anti-extrusion band to move towards a first interface area and a second interface area between the annular member and the second tube. The method also includes the step of propelling the blind member in contact with an inner wall of the second tube to create the blind between the first tube and the second tube.
In one aspect, the gap is closed between the sealing member and the groove by expanding the annular member. In another aspect, the gap is closed by filling the gap with a portion of the sealing member. In an additional aspect, an expansion tool is pushed into the annular member to expand the annular member radially outward. In an additional aspect, the expansion tool is removed from the annular member after the expansion operation. In another aspect, the expansion tool remains inside the annular member after the expansion operation.
In another embodiment, a seal assembly to create a seal between a first tube and a second tube is provided. The sealing assembly includes an annular member attached to the first tube, in which the annular member has a groove formed on the outer surface of the same. The sealing assembly also includes a sealing member arranged in the groove of the annular member so that one side of the sealing member is spaced apart from one side of the groove, where the sealing member has one or more anti-extrusion bands, in that the one or more anti-extraction bands move towards an interface area between the annular member and the second tube by expanding the annular member.
In one aspect, the one or more anti-extrusion bands comprise a first anti-extrusion band and a second anti-extrusion band.
In another aspect, the first anti-extrusion band and the second anti-extrusion band are configured to move into an annular gap formed between the annular member and the second tube after expansion of the annular member due to downhole pressure. In a further aspect, at least one side of the sealing member is attached to the groove by means of glue.
In an additional embodiment, a hanger assembly is provided. The suspension assembly includes an expandable annular member that has an outer surface and an inner surface. The suspension assembly also includes a sealing member arranged in a groove formed on the outer surface of the expandable annular member, in which the sealing member has one or more anti-extrusion spring bands incorporated within the sealing member. The hanger assembly also includes an expansion jacket that has a tapered outer surface and an inner hole. The expansion jacket is movable between a first position in which the expansion jacket is arranged outside the expandable annular member and a second position in which the expansion jacket is arranged inside the expandable annular member. The expansion jacket is configured to radially expand the expandable annular member as the expansion jacket moves from the first position to the second position.
In one aspect, a gap formed between one side of the sealing member and one side of the groove that is configured to close as the expansion path moves from the first position to the second position. In another aspect, a second sealing member disposed in a second groove formed on the internal surface of the expandable annular member, in which the second sealing member has one or more anti-extraction spring bands incorporated within the sealing member. In another aspect, the second seal member is configured to create a seal with the expansion jacket.
Although the foregoing is directed to modalities of the present invention, other and more modalities of the invention can be derived without departing from the basic scope of the same, and the scope of the same is determined by the claims that follow.

权利要求:
Claims (16)
[0001]
1. Downhole tool (300, 800, 900, 980) for use in a well hole, the downhole tool (300, 800, 900, 980) being characterized by the fact that it comprises: a body having a hole; a seal assembly (150) attached to the body, the seal assembly (150, 205, 220, 240, 260, 550) comprising: a wedge member (325, 845) disposed along the body, and a packing member (400, 805) metallic carrying an internal elastomeric seal coupled to the wedge element and an external elastomeric seal for engagement in the well hole; an expandable annular member, a sealing member (135) and an expansion jacket (510), wherein the sealing member (135) includes one or more anti-extrusion bands embedded in the seal member; and a slide assembly (850) disposed along the body, comprising slides (840) and a measuring ring, the slides being movable along an inclined surface of the measuring ring to engage the well bore; a retaining jacket (320, 510) attached to the coating member and coupled to the slides (840); and a drive assembly arranged along the body to move the slides (840) along the gauge ring and to generate relative movement of the wedge member (325, 845) relative to one of an inclined surface of the packing member ( 400, 805).
[0002]
2. Downhole tool (300, 800, 900, 980), according to claim 1, characterized by the fact that the elstomeric sealing member is arranged in a groove (455A, 455B) formed on the outer surface of the metal packing member (400, 805).
[0003]
3. Downhole tool (300, 800, 900, 980) according to claim 2, characterized by the fact that the wedge member (325, 845) includes a tapered outer surface and an internal hole.
[0004]
4. Downhole tool (300, 800, 900, 980), according to claim 3, characterized by the fact that the wedge member (325, 845) is configured to radially expand the packing member ( 400, 805) as said wedge member (325, 845) moves from a first position to a second position.
[0005]
5. Downhole tool (300, 800, 900, 980), according to claim 4, characterized by the fact that a gap is formed between one side of the elastomeric seal and one side of the groove, the gap being configured to close as the wedge member (325, 845) moves from the first position to the second position.
[0006]
6. Downhole tool (300, 800, 900, 980), according to claim 3, characterized by the fact that it also comprises a shirt member arranged in the body hole.
[0007]
7. Downhole tool (300, 800, 900, 980), according to claim 6, characterized by the fact that the shirt member is movable in the body hole between the first position in which a door in the body is locked and a second position where the door on the body is unlocked.
[0008]
8. Downhole tool (300, 800, 900, 980) according to claim 7, characterized by the fact that a fluid path is created between the hole and an external portion of the downhole tool when the shirt member is in second position.
[0009]
9. Downhole tool (300, 800, 900, 980), according to claim 1, characterized by the fact that it also includes: anti-extrusion bands embedded in the external elastomeric seal.
[0010]
10. Downhole tool (300, 800, 900, 980), according to claim 9, characterized by the fact that the metallic coupling member (400, 805) is radially expanded outwards from of the body when the wedge member (325, 845) moves from the first position to the second position.
[0011]
11. Method for using a downhole tool (300, 800, 900, 980) as defined in claim 1, the method being characterized by the fact that it comprises the steps of: running a tubular column with the bottom tool well (300, 800, 900, 980) inside the well bore; pump an open plug into the downhole tool (300, 800, 900, 980), opening a stage valve of said open plug; pressurize the drive assembly through the stage valve; pump cement sludge through the open stage valve; pump a closure plug into the downhole tool (300, 800, 900, 980), driving the cement slurry into a ring between the tubular column and the well and closing the stage valve.
[0012]
12. Method for using a downhole tool (300, 800, 900, 980) according to claim 11, characterized in that it further comprises a step of moving the shirt member into the body hole to lock a door on the body.
[0013]
13. Method for using a downhole tool (300, 800, 900, 980) according to claim 12, wherein slides (840) are expanded and then the metal packing member (400, 805) is expanded .
[0014]
14. Downhole tool (300, 800, 900, 980) for use in a downhole according to claim 11, characterized by the fact that the external elastomeric seal is arranged in a groove formed on an external surface of the metal packing member (400, 805).
[0015]
15. Downhole tool (300, 800, 900, 980), according to claim 14, characterized by the fact that a gap is formed between one side of the elastomeric seal and one side of the groove, the gap being configured to close as the metal packing member (400, 805) expands radially outward.
[0016]
16. Downhole tool (300, 800, 900, 980), according to claim 11, characterized by the fact that it also comprises a shearable member disposed between the metallic packing member (400, 805) and the wedge member (325, 845).

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同族专利:

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WO2012112823A3|2013-02-28|

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CA2827460C|2017-04-04|

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法律状态:
2018-11-13| B25A| Requested transfer of rights approved|Owner name: WEATHERFORD TECHNOLOGY HOLDINGS LLC (US) |

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2018-12-18| B06F| Objections, documents and/or translations needed after an examination request according art. 34 industrial property law|

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2019-10-29| B06U| Preliminary requirement: requests with searches performed by other patent offices: suspension of the patent application procedure|

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2020-05-19| B06G| Technical and formal requirements: other requirements|Free format text: O REQUERENTE APRESENTOU QUADRO REIVINDICATORIO COM 25 REIVINDICACOES CONFORME NOVO QUADRO REIVINDICATORIO, INCORPORANDO AS EMENDAS AS REIVINDICACOES CONFORME EMENDAS DO PCT, APRESENTADO ANTES DO PEDIDO DE EXAME NA PETICAO 860130004589 DE 15/10/2013. ATRAVES DA PETICAO 800130215688 DE 24/10/2013 FOI PAGO O PEDIDO DE EXAME EQUIVALENTE A 06 REIVINDICACOES, COM O VALOR PAGO DE R$ 590,00 (QUINHENTOS E NOVENTA REAIS). COMPLEMENTE O PEDIDO DE EXAME (GRU COM CODIGO DE SERVICO 800) DE ACORDO COM A TABELA DE RETRIBUICOES VIGENTE NO MOMENTO DO CUMPRIMENTO DA EXIGENCIA PARA UM PEDIDO DE PATENTE DE INVENCAO COM ATE 25 REIVINDICACOES. APRESENTE A GRU DE COMPLEMENTACAO E COMPROVANTE DE PAGAMENTO VIA O PETI |

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2020-06-23| B06G| Technical and formal requirements: other requirements|Free format text: O REQUERENTE APRESENTOU QUADRO REIVINDICATORIO COM 25 REIVINDICACOES, INCORPORANDO AS EMENDAS AS REIVINDICACOES CONFORME EMENDAS DO PCT, APRESENTADO ANTES DO PEDIDO DE EXAME NA PETICAO 860130004589 DE 15/10/2013. ATRAVES DA PETICAO 800130215688 DE 24/10/2013 FOI PAGO O PEDIDO DE EXAME EQUIVALENTE A 06 REIVINDICACOES, COM O VALOR PAGO DE R$ 590,00 (QUINHENTOS E NOVENTA REAIS). EM RESPOSTA A EXIGENCIA 6.7 PUBLICADA NA RPI 2576 DE 19/05/2020, APRESENTOU A PETICAO 870200062620 DE 20/05/2020. NA PETICAO 870200062620 DE 20/05/2020 APRESENTA GRU 29409201919173597, COM A COMPLEMENTACAO DO PEDIDO DE EXAME COM O VALOR PAGO DE R$ 700,00 (SETECENTOS REAIS). DE ACORDO COM A TABELA DE RETRIBUICAO ATUAL |

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2020-11-10| B09A| Decision: intention to grant|

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2021-01-05| B16A| Patent or certificate of addition of invention granted|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 16/02/2012, OBSERVADAS AS CONDICOES LEGAIS. |

优先权:

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申请号 | 申请日 | 专利标题

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US13/029,022|US9528352B2|2011-02-16|2011-02-16|Extrusion-resistant seals for expandable tubular assembly|

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US13/029,022|2011-02-16|

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US201161563016P| true| 2011-11-22|2011-11-22|

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US61/563,016|2011-11-22|

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PCT/US2012/025531|WO2012112823A2|2011-02-16|2012-02-16|Stage tool|

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