• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    extrusion-resistant seals for expandable tubular mounting. the present invention generally relates to extrusion-resistant seals for an expandable tubular assembly. in one aspect, a seal assembly to create a seal between a first tubular and a second tubular is provided. the sealing assembly includes an annular member attached to the first tubular, the annular member having a groove formed on an external surface of the annular member. the sealing assembly also includes a sealing member disposed in the groove, the sealing member having one or more anti-extrusion bands. the sealing member is configured to be radially expandable outwardly in contact with an inner wall of the second tubular by applying an outwardly directed force supplied to an inner surface of the annular member. in addition, the sealing assembly includes a defined gap between the sealing member and a side of the groove.
    公开号:BR112013020854B1
    申请号:R112013020854-6
    申请日:2012-02-16
    公开日:2020-08-04
    发明作者:Paul Andrew Reinhardt；Rocky A. Turley；Brent J. Lirette；Huy V. Le
    申请人:Weatherford Technology Holdings Llc；
    IPC主号:
    专利说明:

    CROSS REFERENCE TO RELATED ORDERS
    This application claims benefit from U.S. serial number patent application 13 / 029,022 filed on February 16, 2011, which is hereby incorporated by reference. BACKGROUND OF THE INVENTION FIELD OF THE INVENTION
    Modalities of the present invention refer, in general, to a downhole expansion assembly. More particularly, modalities of the present invention relate to seals for the mounting of downhole expansion. DESCRIPTION OF RELATED TECHNIQUE
    In the oil industry, downhole tools are used in the borehole at different stages of well operation. For example, an expandable auxiliary liner support can be employed during the well formation stage. After a first casing column is established in the well hole, the well is drilled to a designated depth and an auxiliary casing assembly is seated in the well to a depth, with the upper portion of the auxiliary casing assembly overlapping a lower portion of the first coating column. The auxiliary liner assembly is fixed to the well hole by expanding an auxiliary liner support in the surrounding liner and then cementing the auxiliary liner assembly to the well. The auxiliary liner support includes sealing members arranged on an external surface of the auxiliary liner support. The sealing members are configured to create a seal with the surrounding coating by expanding the auxiliary coating support.
    In another example, an obstructor can be used during the production stage of the well. The blocker typically includes a blocker assembly with sealing members. The blocker can seal a ring formed between the production piping arranged within the casing of the well hole. Alternatively, some obstructors seal a ring between the outside of a tube and an uncoated hole. Routine uses of obstructors include pressure liner protection, both stimulation and well pressures and well-hole protection from corrosive fluids. Obstructors can also be used to retain control fluids or treatment fluids in the coating ring.
    Both the auxiliary liner support and the obstructor include sealing members that are configured to create a seal with the surrounding liner or an uncoated hole. Each sealing member is typically arranged in a groove (or gland) formed in an extensible tubular assembly of the auxiliary or obsolete liner support. However, the sealing member can be extruded out of the groove during the expansion of the extendable tubular assembly due to the characteristics of the sealing member. In addition, the sealing member can be extruded out of the groove after the expansion of the extendable tubular assembly due to pressure differentials applied to the sealing member. Therefore, there is a need for extrusion-resistant seals for use with an extensible tubular assembly. SUMMARY OF THE INVENTION
    The present invention generally relates to extrusion-resistant seals for an extensible tubular assembly. In one aspect, a seal assembly for creating a seal between a first tubular and a second tubular is provided. The sealing assembly includes an annular member attached to the first tubular, the annular member having a groove formed on an external surface of the annular member. The seal assembly additionally includes a sealing member arranged in the groove, the sealing member having one or more anti-extraction bands. The sealing member is configured to be radially expandable outward for contact with an inner wall of the second tubular by applying an outwardly directed force supplied to an inner surface of the annular member. In addition, the seal assembly includes a defined gap between the seal member and a groove side.
    In another aspect, a method for creating a seal between a first tubular and a second tubular is provided. The method includes the step of positioning the first tubular within the second tubular, the first tubular having an annular member with a groove, 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 of the groove. The method additionally includes the step of expanding 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 tubular. The method also includes the step of stimulating the sealing member to contact an internal wall of the second tubular to create the seal between the first tubular and the second tubular.
    In yet another aspect, a seal assembly for creating a seal between a first tubular and a second tubular is provided. The sealing assembly includes an annular member attached to the first tubular, the annular member having a groove formed on its outer surface. The sealing assembly additionally includes a sealing member arranged in the groove of the annular member so that one side of the sealing member is separated from one side of the groove, the sealing member having one or more anti-extrusion bands, in which the one or more anti-extrusion bands perform movement towards an interface area between the annular member and the second tubular one by expanding the annular member.
    In an additional aspect, a support assembly is provided. The support assembly includes an expandable annular member that has an outer surface and an inner surface. The support assembly additionally includes a sealing member arranged in a groove formed on the outer surface of the expandable annular member, the sealing member having one or more anti-extrusion spring bands embedded within the sealing member. The support assembly also includes an expansion jacket that has a cuneiform 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. BRIEF DESCRIPTION OF THE DRAWINGS
    So that the way in which the features of the present invention mentioned above can be understood in detail, a more particular description of the invention, briefly summarized above, can be obtained by referring to modalities, some of which are illustrated in the drawings. attachments. It should be noted, however, that the attached drawings illustrate only typical modalities of this invention and, therefore, should not be considered limiting its scope, since the invention may admit other equally effective modalities.
    Figure 1 illustrates a view of an expandable support in an inserted (not established) position.
    Figure 2 shows a view of an expandable support seal assembly.
    Figure 3 shows a view of the seal assembly during expansion of the expandable support.
    Figures 4A and 4B illustrate a view of the seal assembly after expansion of the expandable support.
    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 an enlarged view of an obstruction element in the downhole tool.
    Figure 14 illustrates a view of the downhole tool in an expanded and operating position.
    Figure 15 illustrates an enlarged view of the obstruction element in the downhole tool.
    Figure 16 illustrates a view of a support assembly in an unset position.
    Figure 17 illustrates a view of the support assembly in an established 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 an o-ring.
    Figure 20 illustrates a view of the loading tool on the expandable support.
    Figure 21 illustrates a view of a thrust plate that stimulates the sealing ring in a gland of the expandable support. 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 an auxiliary liner support in Figures 1 to 10, an obstructor in Figures 11 to 15 and a support assembly in Figures 16 to 17. It is to be understood, however, that extrusion-resistant seals can also be used with other downhole tools without deviating from the principles of the present invention. In order to better understand the innovation of the extrusion-resistant seals of the present invention and the methods of using them, reference is made hereafter to the accompanying drawings.
    Figure 1 illustrates a view of an expandable support 100 in an inserted (not established) position. In the completion stage shown in Figure 1, a well hole 65 was coated with a coating column 60. After that, a subsequent auxiliary coating assembly 110 is positioned near the lower end of coating 60. Typically, the auxiliary liner assembly 110 is lowered into the well bore 65 by a laying tool arranged on the lower end of a service column 70.
    The auxiliary liner assembly 110 includes a tubular 165 and the expandable support 100 of this invention. Support 100 is an annular member that is used to secure or support tubular 165 from an inner wall of liner 60. Expandable support 100 includes a plurality of seal assemblies 150 arranged on the outer surface of support 100. The plurality of seal assemblies 150 are separated circumferentially around support 100 to create a seal between auxiliary liner assembly 110 and liner 60 by extending support 100. Although support 100 in Figure 1 shows four seal assemblies 150, any number of sealing assemblies 150 can be attached to the auxiliary lining assembly 110 without deviating 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 side 140C. In the embodiment shown in Figure 2, a bonding material, such as glue (or other fastening means), can be used on sides 140B, 140C during the manufacturing stage of the seal assembly 150 to secure the seal ring 135 to the gland 140. Attaching seal ring 135 to gland 140 is useful to prevent seal ring 135 from becoming unstable and being thrown out when support 100 is positioned on liner 60 and before expansion of support 100. In one embodiment, side 140A has an Angle a (see Figure 5) of approximately 100 degrees before expansion, and side 140A has an angle [3 (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 side 140A of the gland 140. Generally, the span of volume 145 is used to substantially prevent distortion of the sealing ring 135 by expanding the support 100. The span of volume 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 support 100. In other words, during the manufacturing process of the support, the volume span 145 is created by positioning the sealing ring 135 inside the gland 140 so that the sealing ring 135 is separated from at least one side of the gland 140. Even though the volume span 145 in Figure 5 is created by having one side of the gland 140 at an angle, the span of volume 145 can be created in any configuration (see Figures 7 to 10, for example) without deviating from the principles of the present invention. Additionally, the size of the volume span 145 may vary depending on the configuration of gland 140. In one embodiment, 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 sealing band 155 (first anti-extrusion band) and a second sealing band 160 (second anti-extrusion band). As shown, the sealing bands 155, 160 are embedded in the sealing ring 135 in an upper corner on each side of the sealing ring 135. In one embodiment, the sealing bands 155, 160 are arranged on an outer circumference of the sealing ring. seal 135. In another embodiment, sealing bands 155, 160 are springs. The sealing bands 155, 160 can be used to limit the extrusion of the sealing ring 135 during expansion of the sealing assembly 150. The sealing bands 155, 160 can also be used to limit the extrusion of differential pressure applied after expansion. 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 comes into contact with an inner surface 180 of the auxiliary casing assembly 110. Expansion tools are well known in the art and are generally used to radially enlarge an expandable tubular by stimulating the expansion tool 175 is axially through the tubular, thereby curving the tubular wall 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 support 100 and expand support 100 out in contact with liner 60. It is to be understood, however, that other means can be employed to stimulate the expansion tool 175 through the support 100, such as hydraulic or any other means known in the art. In addition, the expanse tool 175 can be arranged on support 100 in any orientation, such as in a downward orientation as shown for a top-down expansion or in an upward orientation for a downward expansion. Additionally, an expandable rotary tool (not shown) can be employed. The swiveling expandable tool moves between a smaller first diameter and a larger second diameter, thus allowing you both to expand from top to bottom and an expansion from low to up depending on the directional axial movement of the expandable tool.
    As shown in Figure 3, the expansion tool 175 has expanded a portion of the support 100 towards the liner 60. During expansion of the support 100, the seal ring 135 moves in contact with the liner 60 to create a seal between the support 100 and cover 60. As the sealing ring 135 comes into contact with the lining 60, the sealing ring 135 changes its configuration and occupies a portion of the volume span 145. In the modality shown, the volume span 145 is located on the side of the seal assembly 150 which is the first portion to be expanded by the expansion tool 175. The location of the volume gap 145 in the seal assembly 150 allows the viewing ring 135 to change position (or reconfigure ) inside 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 holder 100 after the holder 100 is expanded to contact the liner 60.
    O-ring 135 changes configuration during the expansion operation. As shown in Figure 5, seal ring 135 has a volume that is represented by reference number 190. Before expansion, a portion of volume 190 of seal ring 135 is positioned inside gland 140 and another portion of volume 190 of seal ring 135 extends outside of gland 140 (in addition to line 195). After expansion, the volume 190 of the seal ring 135 is repositioned so that the seal ring 135 moves to the span of volume 145 as shown in Figure 6. In other words, the volume 190 of the seal ring 135 is substantially the even before expansion and after 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) was 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, seal ring 135 does not extend outside 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 seal ring 135 moves to the volume span 145. The volume 190 of the seal ring 135 is substantially the same as before expansion and after expansion. In this way, the seal ring 135 changes its configuration during the expansion operation and hides (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 outwards during the expansion operation. As established in this document, the angle a (Figure 5) decreases to the angle | 3 (Figure 6), which causes the size of the volume span 145 to decrease. The height of gland 140 can also be made smaller, which causes the volume of gland 140 to decrease. As such, the combination of the change of configuration of the seal ring 135 and the change of configuration of the gland volume 140 (and / or the volume gap 145) allows the seal ring 135 to create a seal with the liner 60. In one embodiment, the volume of the gland 140 (which includes the span of volume 145) after the expansion operation can be substantially the same as the volume 190 of the seal ring 135. In another embodiment, the volume of the gland 140 (which includes the volume span 145) after the expansion operation may be equal to volume 190 of the viewing ring 135 or may be greater than volume 190 of the sealing ring 135.
    As shown in Figure 6, the sealing bands 155, 160 on the sealing ring 135 are stimulated 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 to position the sealing bands 155, 160 in a location close to the interface 185. In that position, the sealing bands 155, 160 substantially prevent the extrusion of the seal ring 135 in addition to interface 185. In other words, seal bands 155, 160 expand radially outward with support 100 and prevent the elastomeric material from seal ring 135 from flowing through interface 185 between the seal assembly 150 and liner 60. In one embodiment, sealing bands 155, 160 are springs, such as toroidal spiral springs, which expand radially outward due to the expansion of support 100. As the molar expands radially outward, the spirals spring-loaded act as a barrier to the flow of elasto-metallic material from the sealing ring 135. In this way, the sealing bands 155, 160 on the sealing ring 135 act as an anti-extrusion device or an extrusion barrier.
    There are several benefits of the extrusion barrier created by the sealing strips 155, 160. One benefit of the extrusion barrier would 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 view assembly 150 can create a high pressure seal in the range of 82,737.09 to 96,526.60 kPa (12,000 to 14,000 psi). An additional benefit of the extrusion barrier would be that the seal assembly 150 is capable of creating a seal with a surrounding coating that can have a range of internal diameters due to API tolerances. Another benefit would be that the extrusion barrier created by the sealing bands 155, 160 can prevent erosion of the sealing ring 135 after the support 100 has been expanded. Erosion of the sealing ring 135 could eventually lead to malfunction of the sealing assembly 150. An additional benefit is that the sealing bands 155, 160 act as an extrusion barrier after expansion of the expandable support 100. More specifically, the extrusion barrier created by the sealing bands 155, 160 can prevent extrusion of the sealing ring 135 when the gap between the expandable support 100 and the liner 60 is increased due to downhole pressure. In other words, the sealing bands 155, 160 bridge the gap, and the network extrusion gap between spirals of the sealing bands 155, 160 grows considerably less as compared to an annular gap that is formed when a sealing ring does not include sealing bands. For example, the annular span (without sealing bands) can be in the order of 0.762 mm (0.030 ”) radial as compared to the network extrusion span between spirals of the sealing bands 155, 160 which can be in the order of 0.0254 / 0.0762 cm (0.001 / 0.003 ”).
    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 number 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 embodiment , a bonding material, such as glue, can be applied to sides 140A, 140B during the manufacturing stage of seal assembly 205 to secure seal ring 135 to gland 140. Similar to other embodiments, seal ring 135 will be reconfigured and will occupy at least a portion of the span of volume 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 other modalities, the seal ring 135 will be reconfigured and 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 inclination member 245. As shown, side 140A of gland 140 is perpendicular to side 140B. Tilt member 245, such as a spring washer or tank ring, is arranged in the volume span 145 between side 140A and view ring 135. Tilt member 245 can be used to hold the position of the sealing ring 135 in the gland 140. In addition to the sealing band 160, the sloping member 245 can also act as an extrusion barrier by expanding the sealing assembly 240. During the expansion operation, the ring seal 135 will be reconfigured in gland 140 and compress the tilt member 245. Additionally, in this embodiment, the bonding material can be used on the sides 140B, 140C during the manufacturing stage of the seal assembly 240 to secure 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 the seal assembly 260 to fix the seal ring 265 in the gland 140. Similar to other modalities, the seal ring 265 will be reconfigured by expanding the seal assembly 260. However, in this modality, the span of volume 270 the portion of the sealing ring 265 will be closed or reduced in size when the sealing ring 265 is stimulated for contact with the surrounding coating. In another embodiment, seal ring 265 may include seal bands (not shown) embedded in view ring 265, similar to seal bands 155, 160. In an additional mode, 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 hydrostatic pressure exposure.
    Figure 11 illustrates a view of a typical sub-terrestrial hydrocarbon well 90 that defines a vertical well 25 hole. Well 90 has multiple hydrocarbon-shaped formations, such as oil-sized 45 formation and / or size-shaped formations gas (not shown). After the well hole 25 is formed and coated with coating 10, a column of tubing 50 is seated in an opening 15 formed by the liner 10 to provide a path for hydrocarbons to the surface of the 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 drill cannon 40, which is a component of the pipe column 50 Drill cannon 40 is used to pierce liner 10 to allow hydrocarbons trapped in formations 45 to flow to the surface of well 90.
    The tubing column 50 also carries a downhole tool 300, such as an obstructor, a 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. Generally, the downhole tool 300 can be operated by hydraulic or mechanical means and is used to form a view at a desired location in the downhole 25. The downhole tool 300 can seal, for example, a annular space 20 formed between a production pipe 50 and the well hole casing 106. Alternatively, the downhole tool 300 can seal an annular space between the outside of a tubular and an uncoated well hole. Common uses of the downhole tool 300 include protecting the liner 10 from pressure and corrosive fluids; insulation from coating leaks, high pressure injection drilling, or multiple production intervals; and detention of treatment fluids, heavy fluids or control fluids. However, these uses for the downhole tool 300 are for illustrative purposes only, and application of the downhole tool 300 is not limited to just those uses. The downhole tool 300 can also be used with a conventional auxiliary liner support (not shown) in an auxiliary liner assembly. Typically, the downhole tool 300 would be positioned in the auxiliary liner assembly next to the conventional auxiliary liner support. In one embodiment, the downhole tool assembly is positioned above the conventional auxiliary liner support. After the conventional auxiliary liner support is established within the well bore liner, a cementation operation can be performed to secure the auxiliary liner within the well bore. Thereafter, the downhole tool 300 can be activated to seal an annular space formed between auxiliary liner assembly and the well hole liner.
    Figure 12 illustrates the downhole tool 300 in an inserted (not established) position. As shown in Figure 12, the piping column 50 includes a mandrel 305 that defines an internal diameter of the pictured portion of the tubing column 50. An actuation sleeve 335 is slidably arranged around 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) carried on an outer diameter of mandrel 305. An end end of actuation sleeve 335 is supported against a wedge member 325. The cuff member 325 is generally cylindrical and slidably arranged around the mandrel 305. An O-ring seal 310 is arranged between the mandrel 305 and the wedge member 325 to form a sealed interface between the meshes. -mos. The seal 310 is carried on the internal surface of the sleeve member 325; however, seal 310 can also be carried on the outer surface of mandrel 305. In one embodiment, seal 310 includes sealing edges (i.e., anti-extrusion bands) in a similar manner to seal element 450A-B. In addition, a volume span can be defined between seal 310 and a portion of the wedge member 325 in a manner similar to volume span 470A-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 retracted to, and carried by wedge member 325. In this case, the interface of the ratchet ring 380 and ratchet surface 385 allows wedge member 325 to travel only in the direction of arrow 315.
    A portion of the wedge member 325 forms an outer conical surface 375. In operation, the wedge surface 375 forms an inclined sliding surface for an obstruction member 400. Consequently, the wedge member 325 is shown disposed between the mandrel 305 and the obstruction element 400, in which the obstruction element 400 is arranged on the wedge surface 375. In the retracted inserted position, the obstruction element 400 is located at one end of the wedge member 325, the tip being defines a relatively smaller outside diameter in relation to the other end of the wedge surface 375.
    The obstruction element 400 is held in place by a retaining sleeve 320. The obstruction element 400 can be coupled to the retaining sleeve 320 by a variety of locking interfaces. In a modality, 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 obstruction element 400. The pincer fingers 355 can be angled in one radial direction. For example, it is contemplated that the clamp fingers 355 have an outward radial tilt that stimulates the clamp fingers 355 in an enlarged or straight position. However, in this case, the clamp fingers 355 do not provide sufficient force to cause expansion of the obstruction element 400.
    The downhole tool 300 includes a self-adjusting locking mechanism that allows the retaining liner 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 retracted to, and transported by the retaining sleeve 320. In this case, the interface of the ratchet ring -ca 390 and the ratchet surface 395 allow the retaining liner 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 a sufficient seal is maintained by the obstruction element 400 despite counter forces that act to subvert the integrity of the seal.
    In operation, the downhole tool 300 is seated in a downhole in the inserted position shown in Figure 12. To establish the downhole tool 300, actuation sleeve 335 is driven axially in the direction of arrow 315. The Axial movement of actuation sleeve 335 can be caused by applied mechanical force, for example, the weight of a column of tubing 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 wedge member 325 only travel in the direction of arrow 315. With continued travel along mandrel 305, wedge member 325 is driven under obstruction element 400. Obstruction element 400 is prevented from moving relative to wedge member 325 by the ratchet ring provision 390 and the ratchet surface 395. As a result, the obstruction element 400 is forced to slide along the wedge surface 375. The positive inclination of the wedge surface 375 stimulates the obstruction element 400 to a position diametrically expanded. The established position of the obstructor 300 is shown in Figure 14. In the established position, the obstruction element 400 rests on an upper end of the wedge surface 375 and is stimulated to contact the liner 10 to form a fluid-tight seal that is formed partly by a metal-to-elastomer seal and a metal-to-metal contact. More generally, the metal can be any non-elastomer.
    In the established position, the clamp fingers 355 are extended radially outwards, but remain interlocked with the flap 405 formed in the obstruction element 400. This coupling links the position of the retaining sleeve 320 and the ratchet ring 390 to the axial position of obstruction element 400. This allows the obstruction element 400 to move upwards from the wedge member 325 in response to increased pressure from below, which keeps its interface restricted with the inside diameter of the liner, but prevents relative movement of the element obstruction 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 obstruction element 400 as the interface of the obstruction element 400 with the liner 10 and the wedge member 325 will loosen. due to the pressure that expands the coating 10 and likewise acts to collapse the wedge member 325 under the obstruction element 400. A modality of the downhole tool 300 counteracts such an undesirable effect by the provision of the self-adjusting locking mechanism implanted by the ratchet ring 390 and the catch surface 395. In particular, the retaining sleeve 320 is allowed to move above mandrel 305 in the direction of arrow 330 in response to a driving force acting on the obstruction element 400, as shown in Fig. 15. However, the locking mechanism prevents the retentive-sleeve 320 from traveling in the opposite direction (that is, in the direction of arrow 315), thereby ensuring that the seal do not move in relation to the liner 10 when pressure acts from above, which thus reduces wear of the obstruction element 400.
    Figure 13 shows an enlarged view of the obstruction element 400 in the unset position. As such, the obstruction element 400 rests on the diametrically smaller end of the wedge surface 375. The obstruction element 400 includes a tubular body 440 which is an annular member. The tubular body 440 includes a substantially smooth outer surface in its outer diameter, which defines a conformed inner diameter. In that context, a person skilled in the art will recognize that a desired smoothness of the outer surface is determined according to the particular circumstances and environment in which the blocking element 400 is established. For example, the pressures expected to be resisted by the resulting seal formed by the blocking 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.
    To form a seal in relation to the liner 10, the blocking element 400 includes one or more sealing elements 450A-B. The sealing elements 450A-B can be bands of elastomers preferably stuck in grooves 455A-B formed in the tubular body 440. For example, the sealing elements 450A-B can be connected to the grooves 455A-B by a connection material during the manufacturing stage of the obstruction element 400. Each groove 455A-B includes a span of volume 470A-B. As shown in Figure 13, the span of volume 470A-B is located in a lower portion of the groove 455A-B. In other modalities, the volume span 470A-B can be located in different positions and in different configurations in the groove 455A-B (see volume span in Figures 5 to 10, for example). Generally, the volume span 470A-B is used to substantially prevent distortion of the sealing element 450A-B by expanding the obstruction element 400. The size of the volume span 470A-B may vary depending on the groove configuration 455A- B. In a fashion, the 455A-B groove has 3 to 5% more volume due to the 470A-B volume span than a groove without a volume span.
    Each sealing element 450A-B includes a first sealing band 460 and a second sealing band 465. Sealing bands 460, 465 are embedded in sealing element 450A-B. In one embodiment, the sealing bands 460, 465 are springs. The sealing bands 460, 465 are used to limit the extrusion of the sealing element 450A-B by expanding the obstruction element 400.
    The portions of the outer surface between the sealing elements 450A-B form sealing surfaces of non-elastomers 430A to C. The sealing surfaces of non-elastomers 430A to C can include knurling or a rough surface that allows the sealing surfaces of non-elastomers 430A a C seal and act as an anchor by expanding the blocking element 400. The number and size of the sealing elements 450A-B define the surface area of the non-elastomeric sealing surfaces 430A to C. It should be noted that any number of sealing elements 450A-B and sealing surfaces of non-elastomers 430A to C can be supplied. The obstruction element 400 shown includes two sealing elements 450A-B and defines three sealing surfaces of non-elastomers 430A to C. In general, a relatively narrow width of each non-elastomer sealing surface 430A to C is preferred in order to achieve a strength sufficient contact between the surfaces and the coating 10.
    The shaped inner diameter of the tubular body 440 is defined by a plurality of ribs 475 separated by a plurality of slots 480 (e.g., voids). The notches 480 allow a degree of deformation of the tubular body 440 when the obstruction element 400 is placed in a sealed position. Additionally, the slots 480 assist in reducing the amount of setting force required to expand the obstruction element 400 to the sealed position. In other words, by removing material (e.g., notches 480) from the tubular body 440, the force required to expand the obstruction member 400 is reduced. In one embodiment, the volume of the slots 480 (empty) is between 25 to 40% of the volume of the tubular body 440. The 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 wedge surface 375. In an illustrative embodiment, the wedge surface 375 has an angle y between about 2 degrees and about 6 degrees. Consequently, the shaped inner diameter defined by the 485 actuator contact surfaces may have a substantially similar cuneiform angle.
    The tubular body 440 additionally includes an O-ring seal 495 in notch 490. The seal 495 is configured to form a fluid-tight seal in relation to the outer wedge surface 375 of the wedge member 325. In one embodiment, the seal 495 includes sealing bands (i.e., anti-extrusion bands) in a similar manner to the sealing element 450A-B. In addition, a volume span can be defined between seal 495 and a portion of the notch 490 in a manner similar to volume span 470A-B. It is observed that in another modality, or alternatively, the slots 480 can also carry seals in their respective internal diameters.
    In Figure 15, the obstruction element 400 is shown in the sealed (established) position, corresponding to Figure 14. During expansion of the obstruction element 400, the sealing element 450A-B moves into contact with the liner 10 to create a sealing between the blocking element 400 and the casing 10. As the sealing element 450A-B comes into contact with the casing 10, the sealing element 450A-B changes configuration and occupies a portion of the volume span 470A-B. In the modality shown, the span span 470A-B is located on the side of the obstruction element 400, which is the last portion to be expanded by the wedge member 325. The location of the span span 470A-B on the obstruction element -action 400 allows the sealing element 450A-B to change position (or re-configure) within the 455A-B groove during the expansion operation. In addition, the volume of the 470A-B span may change during the expansion operation. In one embodiment, the volume of the 470A-B span can be reduced by 5 to 15% during the expansion operation.
    During the expansion operation, the sealing bands 460, 465 on the sealing element 450A-B are stimulated towards an interface 415 between the obstruction element 400 and the coating 10, as shown in Figure 6. The volume span 470A-B allows the moving element 450A-B to move within the groove 455A-B and position the sealing bands 460, 465 in a location close to interface 415. Comparing the volume span 470A-B before expansion (Figure 13) and after ex-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-B in Figure 15) after the expansion operation.
    The sealing strips 460, 465 are configured to substantially prevent extrusion of the sealing element 450A-B beyond interface 415. In other words, the sealing strips 460, 465 expand radially outward with the obstruction element 400 and prevent the elastomeric material of the sealing element 450A-B from flowing through the interface 415 between the obstruction 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 the expansion of the obstruction element 400. As the spring expands radially outward during the expansion operation, the spring coils act as a barrier for the flow of the elastomeric material from the sealing element 450A -B. After the expansion operation, the sealing bands 460, 465 can prevent extrusion of the sealing element 450A-B when a gap between the obstruction element 400 and the liner 10 is increased due to downhole pressure. In other words, the sealing bands 460, 465 bridge the gap between the blocking element 400 and the liner 10 and prevent extrusion of the sealing element 450A-B. In this way, the sealing bands 460, 465 on the sealing element 450A-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 sealing bands 460, 465. One benefit of the extrusion barrier would be that the outer surface of the sealing element 450A-B in contact with the liner 10 is limited to a region between the sealing bands 460, 465, which allows a high pressure seal to be created between the obstruction element 400 and the liner 10. In one embodiment, the obstruction element 400 can create a high pressure seal in the range of 82,737 , 09 to 103,421.36 kPa (12,000 to 15,000 psi). An additional benefit of the extrusion barrier would be that the blocking 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 would be that the extrusion barrier created by the sealing bands 460, 465 can prevent erosion of the sealing element 450A-B after the obstruction element 400 has been exanded. Erosion of the sealing element 450A-B could eventually lead to malfunction of the blocking element 400.
    The obstruction element 400 rests on the diametrically elongated end of the wedge surface 375 and is pressed between the wedge member 325 and the liner 10. The dimensions of the downhole tool 300 are preferably such that the obstruction element 400 is fully engaged with the liner 10, before the tubular body 440 reaches the end of the wedge surface 375. It is noted that in the sealed position, the sealing elements 450A-B and the non-elastomeric sealing surfaces 430A to C have expanded to contact with the 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 obstruction element 400 slides upwards from the cuneiform surface 375, before making contact with the inner diameter of the coating 10. Additionally or alternatively, deformation can occur as a result conato with the inner diameter of the liner 106. In any case, the deformation process causes the sealing elements 450A-B and the non-elastomeric sealing surfaces 430A to C to contact the inner diameter of the liner 10 in the sealed position . In addition, non-elastomeric safety seals require extrusion of the sealing elements 450A-B.
    Figure 16 illustrates a support assembly 500 in an unset position. At the completion stage shown in Figure 16, a well hole was coated with a coating column 80. After that, the support assembly 500 is positioned inside the coating 80. The support assembly 500 includes a support 530, which is a null member. The support assembly additionally includes an expansion jacket 510. Typically, the support assembly 500 is lowered into the well hole by a seating tool disposed at the bottom end of a service column (not shown).
    The support assembly 500 includes the support 530 of this invention. Support 530 can be used to fix or support auxiliary liners from an inner wall of liner 80. Support 530 can also be used as a patch to seal an annular space formed between support mount 500 and liner well bore 80 or an annular space between support assembly 500 and an uncoated well bore. The support 530 optionally includes gripping members, such as inserts or tungsten carbide slots. The gripping members can be arranged on an outer surface of the support 530. The gripping members can be used to grip an internal surface of the liner 80 by expanding the support 530.
    As shown in Figure 16, support 530 includes a plurality of sealing assemblies 550 arranged on the outer surface of a tubular body of support 530. The plurality of sealing assemblies 550 are separated circumferentially around support 530 to create a ve -dation between support assembly 500 and sheath 80. Each seal assembly 550 includes a seal ring 535 arranged in a gland 540. A connection material, such as glue (or other fastening means), can be used on sides grommets 540 to fix seal ring 535 to gland 540. Attaching seal ring 535 to gland 540 is useful to prevent seal ring 535 from becoming unstable and being thrown out when bracket 530 is positioned in the liner 80 and before the expansion of the support 530. Connecting the sealing ring 535 to the gland 540 is also useful to resist pistoning out of circulation flow, as installation of auxiliary linings typically requires displacements of fluid before sealing and anchoring the support assembly 500.
    The side of the gland 540 creates a gap of volume 545 between the seal ring 535 and the gland 540. As stated in this document, the volume gap 545 is generally used to minimize distortion of the seal ring 535 by expanding the support 530 The span of volume 545 can be created in any configuration (see Figures 7 to 10, for example) without deviating 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. The seal ring 535 includes a first seal band 555 and a second seal band 560. The seal bands 555, 560 are recessed on opposite sides 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 support assembly 500 includes the expansion jacket 510 which is used to expand the support 530. In one embodiment, the expansion jacket 510 is attached to the support 530 by an optional release member 520, such as a shear pin. The expansion jacket 510 includes a wedge-shaped outer surface 515 and a hole 525. The expansion jacket 510 additionally includes an end portion 505 that is configured to interact with an actuating member (not shown). Expansion jacket 510 optionally includes a self-adjusting locking mechanism (not shown) that allows expansion jacket 510 to travel in one direction and prevent travel in the opposite direction.
    To establish the support assembly 500, the actuation member is guided axially in a direction directed to the support 530. The axial movement of the actuation member may be caused by mechanical force applied, for example, from the weight of a column piping or hydraulic pressure acting on a piston. The actuating member, in turn, engages the end portion 505 of the expansion sleeve 510 in order to move the expansion sleeve 510 axially towards the support 530. At a predetermined force, the optional release member 520 is disengaged , which allows the expansion jacket 510 to move in relation to the support 530. The support 530 is prevented from moving in relation to the wedge expansion jacket 510. As the outer surface cuneifor-me 515 of expansion jacket 510 engages the internal surface of support 530, support 530 is moved to a diametrically expanded position.
    The established position of the support assembly 500 is shown in Figure 17. In the established position, the expansion jacket 510 is positioned inside the support 530. In other words, the expansion jacket 510 is not removed from the support 530. This arrangement it can allow the expansion jacket 510 to apply force to the support 530 after the expansion operation. The hole 525 of the expansion sleeve 510 allows other well-hole tools to pass through the support assembly 500 before expanding the support 530 and after expanding the support 530. Comparing the support assembly 500 in the unset position (Figure 16) and the support assembly 500 in the established position (Figure 17), it is observed that the expansion jacket 510 is disposed substantially outside the support 530 in the not established position and the expansion jacket 510 is disposed inside the support 530 in the established position. Expansion jacket 510 remains inside support 530 after the expansion operation is completed. As such, expansion jacket 510 is configured to support support 530 after the expansion operation.
    As shown in Figure 17, support 530 is stimulated to contact 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, the seal ring 535 moves to contact the liner 80 to create a seal between the holder 530 and the liner 80. As the seal ring 535 contacts the liner 80, the seal ring 535 changes configuration and occupies a portion of the volume span 545. In the mode 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 ex-span jacket 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 bands 555, 560 on the sealing ring 535 are stimulated towards an interface between the sealing assembly 550 and the liner 80 to prevent the elastomeric material of the sealing ring 535 from flowing through the interface 585 between the seal assembly 550 and the liner 80. In one embodiment, the sealing bands 555, 560 are springs, such as toroidal spiral springs, which expand radially outward due to the expansion of the support 530. As the spring expands radially outward during the expansion operation, the spring coils act as a barrier to the flow of the elastomeric material from the sealing ring 535. Additionally, after expansion of the support 530, the sealing bands 555, 560 can prevent extrusion of the sealing ring. seal 535 when the gap between the support assembly 500 and the liner 80 is increased due to pressure. In other words, the sealing strips 155, 160 bridge the gap, and the network extrusion gap between spirals of the sealing strips 155, 160 grows considerably less than compared to an annular gap that is formed when a sealing ring does not include sealing bands. 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 support 100 by the dry seal stretching operation. Installation tool 600 generally includes a wedge tool 675, a loading tool 625, and a thrust plate 650. A low friction wrap can be used in the dry seal stretch operation to reduce friction between seal ring 135 and the components of the installation tool 600. In one embodiment, the low friction wrap can be applied to a portion of a cone 610 of the wedge tool 675 and a portion of a flap 630 in the loading tool 625. In another embodiment, the low friction wrap can be applied to a portion of the seal ring 135. The low friction wrap can be a dry lubricant, such as Impregion or Teflon®.
    As shown in Figure 18, the seal ring 135 is moved over the cone 610 of the wedge tool 675 in the direction indicated by arrow 620. The wedge tool 675 is configured to change the seal ring 135 from a first configuration which has a first internal diameter for a second configuration which has a larger second internal diameter (for example, stretching the sealing ring). As shown, the loading tool 625 is positioned in a small diameter portion 640 of the wedge tool 675 so that the flap 630 can receive the sealing ring 135. The loading tool 625 is attached to the wedge 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 thrust plate 650 are removed from end 615 of the wedge tool 600 in the direction indicated by arrow 645. Generally, the loading tool loading 625 is an annular tool that is configured to receive and retain seal ring 135 in the second configuration (for example, larger internal diameter). Figure 20 illustrates a view of the loading tool 625 and the thrust plate 650 in the expandable support 100. The loading tool 625 is positioned in support 100 so that the flap 630 of the loading tool 625 (and seal 135) is located adjacent to the gland 140. After that, the loading tool 625 is attached to the support 100 by a plurality of connection members 615. Before placing the seal ring 135 in the gland 140, a connection material such as like glue, it is applied to the selective sides of gland 140.
    Figure 21 illustrates a view of the thrust plate 650 and the loading tool 625. During the dry sealing stretch operation, the thrust plate 650 engages the sealing member 135 according to the thrust plate 650. it is moved in a direction indicated by arrow 665. The thrust plate stimulates the sealing ring 135 out of the flap 630 of the loading tool 625 and to the gland 140 of the support 100. This sequence of steps can be repeated for each ring. seal 135.
    In one embodiment, a seal assembly to create a seal between a first tubular and a second tubular is provided. The sealing assembly includes an annular member attached to the first tubular, the annular member having a groove formed on an external surface of the annular member. The seal assembly additionally includes a sealing member arranged in the groove, the sealing member having one or more anti-extrusion bands. The sealing member is configured to be radially expandable outwardly in contact with an inner wall of the second tubular by applying an outwardly directed force supplied to an inner surface of the annular member. In addition, the seal assembly includes a defined gap between the seal member and a groove side.
    In one aspect, the span is configured to close upon the expanse of the annular member. In another aspect, the span is configured to completely close 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 comprise a first anti-extrusion band and a second anti-extrusion band. In a further aspect, the first anti-extrusion member is embedded in a first side of the sealing member and the second anti-extrusion band is embedded 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 perform movement towards a first interface area and a second interface area between the annular member and the second tubular one 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, a leaning member disposed within the span. In a further aspect, a plurality of notches are formed on an internal surface of the annular member. In another aspect, the annular member is an auxiliary coating support. In an additional aspect, the annular member is an obstructor.
    In another embodiment, a method for creating a seal between a first tubular and a second tubular is provided. The method includes the step of positioning the first tubular within the second tubular, the first tubular having an annular member with a groove, in which a sealing member, with at least one anti-extrusion band, is disposed within the groove and wherein a gap is formed between one side of the sealing member and one side of the groove. The method additionally includes the step of expanding 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 tubular. The method also includes the step of stimulating the sealing member to contact an inner wall of the second tubular to create the seal between the first tubular and the second tubular.
    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 stimulated for 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 yet another aspect, the expansion tool remains inside the annular member after the ex-expansion operation.
    In yet another embodiment, a seal assembly for creating a seal between a first tubular and a second tubular is provided. The sealing assembly includes an annular member attached to the first tubular, the annular member having a groove formed on an external surface thereof. The sealing assembly additionally includes a sealing member arranged in the groove of the annular member so that one side of the sealing member is separated from one side of the groove, the sealing member having one or more anti-extrusion bands, in which one or more anti-extrusion bands perform movement towards an interface area between the annular member and the second tubular one 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 tubular 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 support assembly is provided. The support assembly includes an expandable annular member that has an outer surface and an inner surface. The support assembly additionally includes a sealing member arranged in a groove formed on the outer surface of the expandable annular member, the sealing member having one or more anti-extrusion spring bands embedded within the sealing member. The support assembly also includes an expansion jacket that has a cuneiform 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 cam 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, the second sealing member having one or more anti-extrusion spring bands embedded within the sealing member. In another aspect, the second seal member is configured to create a seal with the expansion jacket.
    Although the aforementioned is directed to modalities of the present invention, other modalities and additional modalities of the invention can be conceived without deviating from its basic scope, and the scope of the same is determined by the claims that follow.
    权利要求:
    Claims (24)
    [0001]
    1. Seal assembly (150, 205, 220, 240, 260, 550) configured to create a seal between a first tubular that is disposed within a second tubular, the seal assembly (150, 205, 220, 240 , 260, 550) being characterized by the fact that it comprises: an annular member attached to the first tubular, the annular member having a groove formed on an external surface of the annular member, the groove having a first side wall, a second it looks lateral and a bottom surface; a sealing member (135) disposed in the groove, the sealing member having: a lower disposed surface adjacent to the lower groove surface; an upper surface opposite to the lower surface; a first lateral wall disposed adjacent the first lateral groove wall; a second lateral wall disposed adjacent to the second lateral groove wall; and one or more anti-extrusion bands, in which the sealing member (135) is configured to be radially expandable outwardly in contact with an internal wall of the second tubular by applying an outwardly directed force supplied to an internal surface of the annular member; and a gap defined between the first side wall of the sealing member (135) and the first side wall of the groove, where the gap is configured to close by expanding the annular member in response to a coupling of the sealing member (135) and the annular member with the second tubular.
    [0002]
    2. Sealing assembly (150, 205, 220, 240, 260, 550), according to claim 1, characterized by the fact that the gap is configured to close completely by expanding the annular member.
    [0003]
    3. Sealing assembly (150, 205, 220, 240, 260, 550), according to claim 1, characterized by the fact that one or more anti-extrusion bands comprise a first anti-extrusion band (155) and a second anti-extrusion band ( 160).
    [0004]
    4. Sealing assembly (150, 205, 220, 240, 260, 550), according to claim 3, characterized by the fact that the first anti-extrusion member is embedded in a first side of the sealing member (135) and the second anti-extrusion band is embedded in a second side of the sealing member (135).
    [0005]
    5. Sealing assembly (150, 205, 220, 240, 260, 550), according to claim 3, characterized by the fact that the first anti-extrusion band and the second anti-extrusion band are springs.
    [0006]
    6. Sealing assembly (150, 205, 220, 240, 260, 550), according to claim 3, characterized by the fact that the first anti-extrusion band and the second anti-extrusion band are configured to perform movement towards a first interface area and a second interface area between the annular member and the second tubular by expanding the annular member.
    [0007]
    7. Sealing assembly (150, 205, 220, 240, 260, 550), according to claim 1, characterized by the fact that the sealing member (135) is configured to move into the gap by expanding of the sealing member.
    [0008]
    8. Sealing assembly (150, 205, 220, 240, 260, 550), according to claim 1, characterized by the fact that a second gap is defined between the sealing member and a second side wall of the groove.
    [0009]
    9. Sealing assembly (150, 205, 220, 240, 260, 550), according to claim 1, characterized in that it additionally comprises a sloping member (245) arranged in the span.
    [0010]
    10. Sealing assembly (150, 205, 220, 240, 260, 550) according to claim 1, characterized in that it additionally comprises a plurality of notches (480) formed on an internal surface of the annular member.
    [0011]
    11. Sealing assembly (150, 205, 220, 240, 260, 550), according to claim 1, characterized by the fact that the annular member is a coating support.
    [0012]
    12. Sealing assembly (150, 205, 220, 240, 260, 550), according to claim 1, characterized by the fact that the annular member is an obstructor (300).
    [0013]
    13. Sealing assembly (150, 205, 220, 240, 260, 550), according to claim 1, characterized by the fact that at least one side of the sealing member (135) is fixed to the groove by means of glue .
    [0014]
    14. Sealing assembly (150, 205, 220, 240, 260, 550), according to claim 1, characterized by the fact that it also comprises: an expansion jacket (510) that has a conical outer surface and a hole internal, the expansion jacket (510) being movable between a first position in which the expansion jacket (510) is arranged outside the expandable annular member and a second position in which the expansion jacket (510) is arranged inside the expandable annular member, in which the expansion jacket (510) is configured to radially expand the expandable annular member as the expansion jacket (510) moves from the first position to the second position, and in which the expansion of the annular member is configured to close the gap located between the first side wall of the sealing member and the first side wall of the groove.
    [0015]
    15. Sealing assembly (150, 205, 220, 240, 260, 550), according to claim 14, characterized by the fact that it also comprises a second sealing member disposed in a second groove formed on the internal surface of the expandable annular member, the second sealing member having one or more anti-extrusion spring bands on the sealing member.
    [0016]
    16. Seal assembly (150, 205, 220, 240, 260, 550), according to claim 15, characterized in that the second sealing member is configured to create a seal with the expansion jacket.
    [0017]
    17. Sealing assembly (150, 205, 220, 240, 260, 550), according to claim 1, characterized by the fact that the first side wall of the groove is arranged at a first angle before the expansion of the annular member and at a second angle different from the first angle after expansion of the annular limb.
    [0018]
    18. Sealing assembly (150, 205, 220, 240, 260, 550), according to claim 14, characterized by the fact that the first lateral groove wall is arranged at a first angle before the expansion of the member annular and at a second angle different from the first angle after expansion of the annular limb.
    [0019]
    19. Seal assembly (150, 205, 220, 240, 260, 550) configured to create a seal between a first tubular and a second tubular, with the seal assembly (150, 205, 220, 240, 260 , 550) is characterized by the fact that it comprises: an expandable annular member attached to the first tubular, the annular member having a groove formed on an outer surface of the same, the groove having a first lateral wall, a second lateral appearance and a bottom surface; and a sealing member arranged in the groove, the sealing member having a bottom surface adjacent to the bottom surface of the groove, an upper surface opposite the bottom surface, a first side wall disposed adjacent to the first side wall of the groove, wherein the member seal is configured to be radially expandable outwardly in contact with an inner wall of the second tubular by applying an outwardly directed force supplied to an inner surface of the annular member, in which the upper surface of the seal member extends radially- outwardly beyond the outer surface of the annular member adjacent to the first and second groove side walls in an unexpanded configuration; and a gap defined between the first side wall of the sealing member (135) and the first side wall of the groove, where the gap is configured to close by expanding the annular member in response to a coupling of the sealing member (135) and the annular member with the second tubular.
    [0020]
    20. Sealing assembly (150, 205, 220, 240, 260, 550), according to claim 1, configured by the fact that the upper surface of the sealing element is rounded.
    [0021]
    21. Sealing assembly (150, 205, 220, 240, 260, 550), according to claim 1, characterized by the fact that the groove is defined by a gland with elevated surfaces extending from the external surface of the annular member.
    [0022]
    22. Sealing assembly (150, 205, 220, 240, 260, 550), according to claim 1, characterized by the fact that the sealing member (135) comprises two raised features on the upper surface of the sealing member.
    [0023]
    23. Sealing assembly (150, 205, 220, 240, 260, 550) according to claim 15, characterized in that a gap is formed between a side wall of the second sealing member and a side wall of the second groove, and in which the gap is configured to close after the expansion of the annular member.
    [0024]
    24. Sealing assembly (150, 205, 220, 240, 260, 550) according to claim 19, characterized by the fact that the sealing member (135) comprises two raised features on the upper surface of the sealing member.
    类似技术:
    公开号 | 公开日 | 专利标题
    BR112013020854B1|2020-08-04|EXTRUSION RESISTANT SEALS FOR EXPANDABLE TUBULAR ASSEMBLY
    US9920588B2|2018-03-20|Anchoring seal
    CA2827460C|2017-04-04|Downhole tool having expandable annular member
    US11028657B2|2021-06-08|Method of creating a seal between a downhole tool and tubular
    US20150083434A1|2015-03-26|Annular relief valve
    US11215021B2|2022-01-04|Anchoring and sealing tool
    US20160168944A1|2016-06-16|Setting Sleeve
    AU2014406447B2|2018-05-17|Swellguard er isolation tool
    同族专利:
    公开号 | 公开日
    AU2012276071B2|2016-04-14|
    US10174579B2|2019-01-08|
    WO2013002848A2|2013-01-03|
    EP2675991B1|2020-06-10|
    EP2675991A2|2013-12-25|
    CA2827451C|2015-11-24|
    US9528352B2|2016-12-27|
    US20120205872A1|2012-08-16|
    US20170175482A1|2017-06-22|
    BR112013020854A2|2016-10-18|
    WO2013002848A3|2013-03-07|
    CA2827451A1|2013-01-03|
    AU2012276071A1|2013-10-03|
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    法律状态:
    2017-07-18| B25A| Requested transfer of rights approved|Owner name: WEATHERFORD TECHNOLOGY HOLDINGS LLC (US) |
    2018-12-18| B06F| Objections, documents and/or translations needed after an examination request according art. 34 industrial property law|
    2019-10-29| B06U| Preliminary requirement: requests with searches performed by other patent offices: suspension of the patent application procedure|
    2020-05-26| B09A| Decision: intention to grant|
    2020-08-04| 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:
    申请号 | 申请日 | 专利标题
    US13/029,022|US9528352B2|2011-02-16|2011-02-16|Extrusion-resistant seals for expandable tubular assembly|
    US13/029,022|2011-02-16|
    PCT/US2012/025508|WO2013002848A2|2011-02-16|2012-02-16|Extrusion-resistant seals for expandable tubular assembly|
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