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    • 专利摘要:
    HOLE COMPLETION SYSTEM BELOW, AND METHOD OF COMPLETING AN OPEN HOLE SECTION OF A WELL HOLE. A hole completion set is disclosed below to seal and support an open hole section of a well hole. The system may include a movable fence structure between contracted and expanded configurations, a truss structure also movable between contracted and expanded configurations, in which, when in their respective contracted configurations, the fence and truss structures are each capable of axially traversing extended production piping inside a well bore, a transport device operationally coupled to the sealing and truss structures and configured to transport the sealing and truss structures in their respective configurations contracted through the production pipe and up to a borehole open hole section, and a development device operatively connected to the fence and truss structures, and configured to radially expand the fence and truss structures from their respective contracted configurations to their respective expanded configurations.
    公开号:BR112014016270B1
    申请号:R112014016270-0
    申请日:2013-01-30
    公开日:2020-12-01
    发明作者:Michael Fripp；John Gano；Peter Besselink；Wilfried Van Moorleghem
    申请人:Halliburton Energy Services, Inc；
    IPC主号:
    专利说明:

    [0001] [0001] This present invention relates to well hole completion operations and, more particularly, to a hole down completion set for sealing and supporting an open hole section of a well hole.
    [0002] [0002] Oil and gas wells are drilled into the Earth's crust and extend through several underground zones before reaching areas of interest for oil and / or gas production. Some of these underground areas can contain water and it is often advantageous to prevent subsurface water from being produced to the surface with oil / gas. In some cases it may be desirable to block the production of gas in an oil zone, or to block oil production in a gas zone. Where several oil / gas zones are penetrated by the same borehole, it is often required to isolate the different zones, thereby allowing separate and intelligent production control from each zone, for more efficient production. In traditionally completed wells, where a casing column is cemented into the well bore, external shutters are commonly used to provide ring seals or barriers between the casing column and the centrally located production piping to isolate the various zones .
    [0003] [0003] However, it is increasingly common to employ completion systems in open-bore sections of oil and gas wells. In these wells the casing column is cemented only in the upper portions of the well hole, while the remaining portions of the well hole remain uncoated and generally open, that is, open hole for the surrounding formations and underground areas. Open-hole completions are particularly useful in inclined well holes, which have borehole portions that are deflected and run horizontally for thousands of feet through producing and non-producing zones. Some of the areas crossed by the inclined well bore may be water zones, which should be generally isolated from any hydrocarbon producing areas. In addition, the different hydrocarbon producing zones often have different natural pressures, and must be intelligently isolated from each other to prevent runoff between adjacent zones, and to allow efficient production from low pressure zones.
    [0004] [0004] In open-hole completions, ring insulators are often employed along the length of the open-well hole, to allow for the selective production of, or isolation of, the various portions of the producing zones. As a result, formations penetrated by the borehole can be produced intelligently, but the borehole may still be subject to collapse or unwanted sand production. To prevent the collapse of the borehole and sand production, several steps can be taken, such as installing gravel packing and / or sand sieves. More modern techniques include the use of expandable tubing in conjunction with sand sieves. These types of tubular elements can be brought into uncoated and expanded boreholes once they are in position using, for example, a hydraulic filling tool, or by pulling or pushing an expansion cone through the tubular elements.
    [0005] [0005] In some applications the expanded tubular elements provide mechanical support for the uncoated well bore, thereby helping to prevent collapse. In other applications, contact between the tubular element and the borehole wall can serve to restrict or prevent annular flow of fluids outside the production pipeline. However, in several cases, due to irregularities in the borehole wall, or simply unconsolidated formations, expanded tubing and sieves will not prevent annular flow in the borehole. For this reason, annular insulators, such as a liner plug, are typically needed to interrupt annular flow. The use of conventional external casing shutters for such open-hole completions, however, presents numerous problems. They are significantly less reliable than those with an inner lining, may require additional displacement to fit a plug for diverting cement into the plug, and are generally not compatible with expandable completion screens.
    [0006] [0006] Efforts were made to form annular insulators in open-hole completions by placing a rubber sleeve on expandable tubing and sieves, and then expanding the tubing to compress the rubber sleeve to contact the borehole wall. These efforts have had limited success due primarily to the unknown shape and variable diameter of the actual borehole. In addition, the thickness of the rubber sleeve should be limited, since it adds to the overall diameter of the pipe, which must be small enough to extend through small diameters when brought into the borehole. The maximum size is also limited to allow the pipe to be expanded into a nominal borehole, or even oversized. On the other hand, in washed or oversized boreholes normal pipe expansion is not likely to expand the rubber sleeve sufficiently to contact the borehole wall and thereby form a seal. To form an annular seal or insulator in boreholes of variable dimensions, adjustable or variable expansion tools have been used with some success. However, it is difficult to achieve significant stress on the rubber with such variable tools, and this type of expansion produces an inner surface of the tubing that follows the shape of the borehole and is not of substantially constant diameter. SUMMARY OF THE INVENTION
    [0007] [0007] The present invention relates to well hole completion operations and, more particularly, to a down hole completion set for sealing and supporting an open hole section of a well hole.
    [0008] [0008] A hole completion system is disclosed in some modalities. The system can include a movable fence structure between a contracted configuration and an expanded configuration, a truss structure also movable between a contracted configuration and an expanded configuration, in which, when in their respective contracted configurations the fence and truss structures are each capable of axially traversing extended production tubing within a well bore, a conveying device configured to transport the sealing and truss structures in their respective configurations contracted through the production tubing and up to an open bore section of the bore well, and a development device, configured to radially expand the sealing and truss structures from their respective contracted configurations to their respective expanded configurations, the truss structure being expanded while arranged, at least partially, within the structure of seal.
    [0009] [0009] In other embodiments, a method of completing an open hole section of a well hole is disclosed. The method may include transporting a fence structure to the open hole section of the well hole with a transport device operatively coupled to it, the fence structure being movable between a contracted configuration and an expanded configuration, transporting a truss structure to the open hole section of the borehole with the transport device operationally coupled to it, the truss structure also being mobile between a contracted configuration and an expanded configuration, radially expand the sealing structure to its expanded configuration with a development device when the sealing structure is arranged in the open bore section, radially expand the truss structure to its expanded configuration with the development device, the truss structure being expanded while arranged within the sealing structure and radially support the sealing structure with the truss structure.
    [0010] [00010] In still other modalities, a hole completion system arranged within an open hole section of a well hole is disclosed. The system may include one or more extreme sections arranged within the open and movable bore section between the contracted and expanded configurations, each extreme section including at least one sealing structure configured to engage an inner radial surface of the open bore section and one or more intermediate sections connected in a communicable manner to one or more extreme sections, and movable between contracted and expanded configurations, each intermediate section also including at least one sealing structure, in which at least one sealing structure of each of the extreme and intermediate is movable between a contracted configuration and an expanded configuration, and when in the contracted configuration the at least one sealing structure is able to axially traverse production pipe extended into the well bore.
    [0011] [00011] The aspects and advantages of the present invention will be easily evident to those skilled in the art when reading the description that follows of the preferred modalities. BRIEF DESCRIPTION OF THE DRAWINGS
    [0012] [00012] The following figures are included to illustrate certain aspects of the present invention, and should not be seen as exclusive modalities. The disclosed theme is capable of considerable modifications, changes, combinations and equivalents in form and function, as will occur to those versed in the technique and who have the benefit of this dissemination.
    [0013] [00013] Figure 1 illustrates a hole completion system below taken as an example according to one or more modalities.
    [0014] [00014] Figures 2A and 2B illustrate contracted and expanded sections of a fence structure taken as an example according to one or more modalities.
    [0015] [00015] Figures 3A and 3B illustrate contracted and expanded sections of truss structure taken as an example according to one or more modalities.
    [0016] [00016] Figures 3C and 3D illustrate contracted and expanded sections of another truss structure taken as an example according to one or more modalities.
    [0017] [00017] Figures 4A-4D illustrate progressive views of an extreme section of a hole completion system below taken as an example, being installed in an open hole section of a well hole according to one or more modalities.
    [0018] [00018] Figure 5 illustrates a partial cross-sectional view of a sealing structure in its compressed, intermediate and expanded configurations, according to one or more modalities.
    [0019] [00019] Figures 6A-6D illustrate progressive construction views of the hole completion system below figure 1 within an open hole section of a well hole according to one or more modalities. DETAILED DESCRIPTION
    [0020] [00020] This present invention relates to well hole completion operations and, more particularly, to a hole down completion set to seal and support an open hole section of a well hole.
    [0021] [00021] The present invention provides a hole-below completion system that features an expandable sealing structure and corresponding internal truss structure, which are capable of being brought in through existing production piping and then expanded to coat and support the interior surface of an open hole section of a well hole. Once the sealing structure is brought into its proper hole location, it can be expanded using any number of fixed expansion tools that are also small enough to axially traverse the production pipeline. In operation, the expanded sealing structure can be useful in sealing the inner radial surface of the open borehole, thereby preventing the flow of unwanted fluids such as water. The internal truss structure can be arranged within the sealing structure and useful in supporting the expanded sealing structure. The truss structure also serves to generally provide collapse resistance for the corresponding open hole section of the well hole. In some embodiments, the sealing structure and the corresponding internal truss structure are expanded at the same time with the same fixed expansion tool. In other embodiments, however, they can be expanded into two separate introductions, thereby allowing the material for each structure to be thicker and more robust.
    [0022] [00022] The hole completion system disclosed below may prove advantageous in that it is small enough to be able to be brought through existing production piping into an open hole section of a well hole. When expanded, the hole completion system disclosed below can provide sufficient expansion within the open hole section to adequately seal sections or portions of it and still provide collapse resistance for the well hole. Once properly installed, the hole completion system below taken as an example can stabilize, seal and / or otherwise isolate the open hole section for intelligent long-term production operations. As a result, the life of a well can be extended, thereby increasing profits and reducing expenses associated with the well. As will be evident to those skilled in the art, the systems and methods disclosed herein can advantageously save, or otherwise revive, certain types of wells such as irrigated wells that were previously thought to be economically unviable.
    [0023] [00023] Referring to figure 1, it illustrates a hole completion system below, taken as an example 100 according to one or more disclosed modalities. As illustrated, system 100 can be configured to be arranged in an open hole section 102 of a well hole 104. As used here the term or phrase “hole completion system below” should not be interpreted to refer only to systems of borehole completion as classically defined or otherwise generally known in the art. Instead, the borehole completion system may also refer to, or be characterized as, a borehole fluid transport system. For example, the hole completion system below 100 and the various variations described here, may not necessarily be connected to any production piping or the like. As a result, in some embodiments fluids transported through the hole completion system below 100 may leave the system 100 into the open hole section 102 of the well hole, without departing from the scope of the disclosure.
    [0024] [00024] While figure 1 delineates system 100 as being arranged in a portion of well hole 104 that is oriented horizontally, it will be appreciated that system 100 can also be arranged in a vertical or angled portion of well hole 104, or any other angular configuration between them without departing from the scope of the disclosure. As illustrated, the below 100 hole completion system may include several interconnected sections or lengths that extend axially within well hole 104. Specifically, system 100 may include one or more end sections 106a (not shown) and one or more sections intermediate 106b coupled to, or generically otherwise interposing, extreme sections 106a. As will be described in more detail below, the end and intermediate sections 106a, b can be coupled or otherwise connected together at their respective ends, to provide an elongated conduit or structure within the open bore section 102 of the borehole 104.
    [0025] [00025] Although only two extreme sections 106a and three intermediate sections 106b are outlined in figure 1, it will be appreciated that system 100 may include more or less extreme and intermediate sections 106a, b without departing from the scope of the disclosure and depending on the application of particular needs bore down. In fact, system 100 can be extended progressively by adding several sections to it, such as additional extreme sections 106a and / or additional intermediate sections 106b. Additional extreme and / or intermediate sections 106a, b can be added until a desired or predetermined length of system 100 is reached within open hole section 102. Those skilled in the art will recognize that there is essentially no limit to how long the System 100 can be extended, only being limited by the overall length of well hole 104, the size and number of overlapping sections, finances and time.
    [0026] [00026] In some embodiments the end sections 106a may be dimensioned in such a way that they expand to seal against or otherwise coat the inner radial surface of the open hole section 102 when installed, thereby providing an insulation point corresponding to the along the axial length of well hole 104. As discussed in more detail below, one or more of the end sections 106a may include an elastomer or other sealing element placed around its outer radial surface to seal the inner radial surface of the seal. open hole section 102. Intermediate sections 106b may or may not be configured to seal against the inner radial surface of open hole section 102. For example, in some embodiments, as shown in Figure 1, one or more of the intermediate sections 106b can be characterized as assembled elements configured with a fixed outside diameter when fully expanded, and does not need configured to seal or otherwise engage the inner radial surface of the open bore section 102. Instead, such assembled elements may be useful in providing lengths of connection piping or conduit to seal the end sections 106a and provide through them direct communication.
    [0027] [00027] In other embodiments one or more of the intermediate sections 106b can be characterized as extension elements configured with a fixed outer diameter and designed to cover an eroded portion of the open hole section 102. In some embodiments, such extension elements may have capacities of variable seal having a sealing element (not shown) placed around their respective outer radial surfaces. The sealing element can be configured to seal the inner radial surface of the open hole section 102 where erosion may be present. In still other embodiments, one or more of the intermediate sections 106b can be characterized as sealing elements configured to, much like the extreme sections 106a, seal a portion of the well hole 104 along the length of the open hole section 102. Such elements seals can have an outer diameter that is matched or approximately matched to a gauge register of the open bore section 102.
    [0028] [00028] In contrast to prior art systems that are typically brought into the open hole section 102 through a coated well hole 104, the below disclosed hole completion system 100 can be configured to pass through production piping. existing 108 that extends into well bore 104. In some embodiments, production tubing 108 may be stabilized into well bore 104 with one or more annular plug 110, or the like. As can be appreciated by those skilled in the art, the production pipe 108 has a reduced diameter which requires the system 100 to have an even smaller diameter during introduction, to effectively traverse the length of the production pipe 108 axially. For example, a production pipe 108 of 4.5 inches in outer diameter in an open hole section 102 of nominal inner diameter of 6.125 inches should require that the hole completion system below 100 would need to have a maximum diameter of 3.6 inches to pass through the nipples on the production pipe 102 and should be able to expand between 8-7.5 inches in the open bore section 102. Those skilled in the art will easily recognize that the diameter range in the open bore section 102 is necessary to take into account potential irregularities in the open bore section 102. In addition, to properly seal against the open bore section 102 when the production piping 108 is properly developed, system 100 can be designed to present a large amount of potential radial expansion.
    [0029] [00029] Each section 106a, b of the below 100 hole completion system may include at least one sealing structure 112 and at least one truss structure 114. In other embodiments, however, truss structure 114 may be omitted from one or more more of sections 106a, b without departing from the scope of the disclosure. In some embodiments, the sealing structure 112 can be configured to expand and cover the inner radial surface of the open bore section 102, thereby providing a sealing function within the borehole 104. In other embodiments, the sealing structure 112 can simply providing a generally sealed or tubular conduit for system 100 to be connected to adjacent sections 106a, b.
    [0030] [00030] As illustrated and as will be discussed in more detail below, at least one truss structure 114 can be arranged generically within a corresponding sealing structure 112, and can be configured to radially support the sealing structure 112 in its expanded configuration . The truss structure 114 can also be configured to be otherwise useful in supporting the well hole 104 itself, thereby preventing collapse of the well hole 104. Although only one truss structure 114 is delineated within a corresponding sealing structure 112, it will be appreciated that more than one truss structure 114 can be used within a single fence structure 112 without departing from the scope of the disclosure. In addition, several truss structures 114 can be nested within each other, as is appropriate when there is adequate radial space in the expanded condition for several support structures 114 and be radially small enough to pass through the interior of the production pipe 108. appreciated, several truss structures 114 in a generally nested relationship can provide additional radial support for the corresponding sealing structures 112 and / or well bore 104.
    [0031] [00031] Referring now to figures 2A and 2B, with continued reference to figure 1, a sealing structure is shown as an example 112 according to one or more modalities. Specifically, figures 2A and 2B outline the sealing structure 112 in its contracted and expanded configurations, respectively. In its contracted configuration, as briefly noted above, the sealing structure 112 has a small enough diameter to be brought into the well hole 104 through the reduced diameter of the production pipe 108. Once developed from the production pipe In production 108 the sealing structure 112 is then capable of being radially expanded into the expanded configuration.
    [0032] [00032] In one or more embodiments the sealing structure 112 can be an elongated tubular made of one or more metals or metal alloys. In other embodiments, the sealing structure 112 may be an elongated tubular made of thermally cured plastic, fiber-reinforced thermoplastic composites, cement composites or combinations thereof, or the like. In embodiments where the sealing structure 112 is made of metal, the sealing structure 112 can be corrugated, reinforced, looped or spiraled. As outlined in figures 2A and 2B, the sealing structure 112 is an elongated corrugated tubular having a plurality of longitudinally extending corrugations or folds defined therein. Those skilled in the art, however, will easily appreciate the various alternative designs that the 112 sealing structure could present without departing from the scope of the disclosure. For example, in at least one embodiment, the structure of the seal 112 can be characterized as a failure, or the like. In embodiments where the sealing structure 112 is made of corrugated metal, the corrugated metal can be expanded to unfold the corrugations or folds defined therein. In embodiments where the sealing structure 112 is made of circular metal, stretching the circular tube will result in more deformation in the metal, however it will advantageously result in increased strength.
    [0033] [00033] As shown, the sealing structure 112 may include or otherwise define a sealing section 202, opposite connecting sections 204a and 204b and opposite transition sections 206a and 206b. Connecting sections 204a, b can be defined at either end of the sealing structure 112 and transition sections 206a, b can be configured to provide, or otherwise define, the axial transition from the corresponding connector sections 204a, b for the sealing section 202 and vice versa. In at least one embodiment, each of the sealing section 202, connection sections 204a, b and transition sections 206a, b can be formed or otherwise manufactured differently or from different parts or materials configured to present an expansion potential different, for example, diameter, when the sealing structure 112 transitions to expanded configuration. For example, the corrugations, that is, the peaks and valleys of the sealing section 202 may have a greater frequency amplitude, for example, shorter wavelength, than the corrugations of the connecting sections 204a, b, with this resulting in the sealing section 202 be able to expand to a larger diameter than the connecting sections 204a, b. As can be appreciated, this may allow the various portions of the sealing structure 112 to expand in different magnitudes, thereby providing variable transition forms over the length of the sealing structure 112. In some embodiments the various sections 202, 204a, b, 206a , b can be interconnected or coupled in another way by welding, brazing, mechanical connections, combinations thereof, or the like. In other embodiments, however, the various sections 202, 204a, b, 206a, b are integrally formed in a one-piece fabrication.
    [0034] [00034] In some embodiments, the sealing structure 112 may also include a sealing element 208 placed around at least a portion of the outer radial surface of the sealing section 202. In some embodiments, an additional layer of protective material may surround the circumference outer radial of the sealing element 208 to protect the sealing element 208 when it is advanced through production piping 108. The protective material can further provide additional support for the sealing structure 112 configured to keep the sealing structure 112 over a diameter maximum operating time before expansion into well hole 104. In operation, the sealing element 208 can be configured to expand when the sealing structure 112 expands and finally engages and seals against the inside diameter of the open bore section 102. In other embodiments, the sealing element 208 can provide lateral support for the hole completion system below 100 (figur to 1). In some embodiments, the sealing element 208 can be arranged in two or more discrete locations along the length of the sealing section 202. The sealing element 208 can be made of an elastomer or a rubber, it may be unstable or not unstable, depending on application. In at least one embodiment the sealing member 208 may be an elastomer that swells made of a mixture of an elastomer that swells with water and an elastomer that swells with oil.
    [0035] [00035] In other embodiments the material for the sealing elements 208 can be varied along the sealing section 202 to create the best possible seal for the type of fluid to which the particular sealing element can be exposed. For example, one or more bands of sealing materials can be located as desired along the length of the sealing section 202. Material used for the sealing element 208 may include elastomeric material that swells as described above and / or very fluid bands viscous. The very viscous liquid, for example, can be an uncured elastomer that cures in the presence of well fluids. An example of such a very viscous liquid may include a silicone that cures with a small amount of water, or other materials that are a combination of properties such as a very viscous silicone mud and small ceramic beads or cured elastomeric material. The viscous material can be configured to better conform to the annular space between the expanded sealing structure 112 and the variable shape of the well hole 104 (figure 1). It should be noted that to establish a seal, material of the sealing element 208 does not need to change properties, but only have sufficient viscosity and length in the small radial space to remain in place for the life of the well. The presence of other fillers, such as fibers, can improve the viscous seal.
    [0036] [00036] In other embodiments (not shown) the sealing element 208 is applied to the inside diameter of the open bore section 102 and may include such materials as, however, not limited to, a material with shape memory, swelling clay, moisturizing gel, an epoxy, combinations of them, or similar. In still other embodiments, the fibrous material could be used to create a labyrinth seal between the outer radial surface of the sealing structure 112 and the inner diameter of the open hole section 102. The fibrous material, for example, can be any type of material capable of providing or otherwise forming a sealing matrix that creates a substantially tortuous path for any fluids that potentially escape. In still other embodiments, the sealing element 208 is omitted entirely from the sealing structure 112 and, instead, the sealing section 202 itself is used to engage and seal against the inside diameter of the open bore section 102.
    [0037] [00037] Referring now to figures 3A and 3B with continued reference to figure 1, a truss structure is shown as an example 114 according to one or more modalities. Specifically, figures 3A and 3B outline the truss structure 114 in its contracted and expanded configurations, respectively. In its contracted configuration the truss structure 114 has a small enough diameter to be able to be brought into the well bore 114 through the reduced diameter production pipe 108. In some embodiments the truss structure 114 in its configuration contracted, has a small enough diameter to be nested within the sealing structure 112 when the sealing structure 112 is in its contracted configuration and capable of being brought into the well bore 104, simultaneously through the production pipe 108. Once developed from production tubing 108, the truss structure 114 is then capable of being radially expanded to its expanded configuration.
    [0038] [00038] In some embodiments the truss structure 114 may be an expandable device that defines one, or otherwise uses, a plurality of expandable cells 302 which facilitates the expansion of the truss structure 114 from the contracted state (figure 3A ) to the expanded state (figure 3B). In at least one embodiment, for example, expandable cells 302 of truss structure 114 can be characterized as bistable or multistable cells where each bistable or multistable cell has a thin curved strut 304 connected to a thick curved strut 306. The geometry of the cells bistable is such that the tubular cross section of the truss structure 114 can be expanded in the radial direction to increase the overall diameter of the truss structure 114. When the truss structure 114 expands radially the bistable cells deform elastically until a specific geometry is achieved . From this point the bistable cells move, for example, fit, to an expanded geometry. In some embodiments, additional force can be applied to stretch the bistable cells to an even wider expanded geometry. With some materials and / or bistable cell designs, sufficient energy can be released in the elastic deformation of the expandable cell 302 when each bistable cell fits after the specific geometry and the expandable cells 302 are able to initiate the expansion of adjacent bistable cells after the geometry of the critical stable cell. With other materials and / or bistable cell designs, the bistable cells move to an expanded geometry with a non-linear force-displacement profile stepped on the ladder.
    [0039] [00039] At least one advantage to using a truss structure 114 that includes bistable expandable cells 302 is that the axial length of the truss structure 114 in the contracted and expanded configurations will be essentially the same. An expandable bistable truss structure 114 is thus designed so that when the radial dimension expands, the axial length of the truss structure 114 remains substantially constant. Another advantage to using a truss structure 114 that includes bistable expandable cells 302 is that the expanded cells 302 are more rigid and will create a high resistance to collapse with less radial movement.
    [0040] [00040] Whether bistable or not, the 302 expandable cells facilitate the expansion of the truss structure 114 between its contracted and expanded configurations. The selection of a particular type of expandable cell 302 depends on a variety of factors including environment, degree of expansion, available materials, etc. Additional discussion related to bistable devices and other expandable cells can be found in US Patent No. 8,230,913 co-owned, entitled “Expandable Device for Use in a Well Bore” whose content is expandable for use in a well bore. it is hereby incorporated for reference in its entirety.
    [0041] [00041] Referring to the 3D and 3D figures, another truss structure is shown as an example 115, according to one or more modalities. The lattice structure 115 may be similar in some respects to the lattice structure 114 of figures 3A and 3B and, therefore, can be better understood with reference to it where equal numerals will correspond to equal elements. Specifically, figure 3C outlines truss structure 115 in a contracted configuration and figure 3D outlines truss structure 115 in an expanded configuration. As illustrated, the truss structure 115 can include a plurality of expandable cells 302 having a plurality of thin struts 304 connected to a corresponding plurality of thick struts 306 through one or more spring elements 308. When the truss structure 115 expands radially bistable cells deform elastically until a specific geometry is achieved. At this point the bistable cells move (for example, fit) to an expanded geometry. In some embodiments, additional force can be applied to stretch the bistable cells to an even wider expanded geometry.
    [0042] [00042] In other embodiments the material of the lattice structure 115 and / or cell geometry can be modified to create a lattice structure 115 with several stable expanded states, that is, multistable cells while the length of the device remains the same during expansion . A truss structure 115 based on these multistable cells generically also shows a low recovery after expansion combined with a high radial resistance. In some cases an even smaller resumption is necessary to completely close the annular space between the wall of an outer sealing element on an expanded sealing structure 112 and the inner radial wall of the well hole. Additional radial pressure out on this contact surface is also useful. In such embodiments an additional layer of swelling elastomer (not shown) can be applied to the outer surface of the truss structure 115 which can be configured to close the eventual space between the truss structure 115, the inner wall of the surrounding sealing structure 112 , after the sealing structure 112 and the truss structures 115 have been put in place and expanded. Such an additional elastomer that swells should only have to close a small space if a truss structure 115 with minimized resumption as described above is used. Alternatively, the swelling elastomer layer can also be applied to the inner surface of the sealing structure 112 with the same effect on closing the last space as described above.
    [0043] [00043] Referring now to figures 4A-4D with continued reference to figures 1, 2A-2B and 3A-3B, progressive views of an extreme section 106a which are installed or otherwise developed within an open bore section are illustrated 102 of well hole 104. While figures 4A-4D outline the development or installation of an end section 106a, it will be appreciated that the following description could equally apply to the development or installation of an intermediate section 106b without departing from the scope of disclosure. As illustrated in figure 4A, a transport device 402 can be operationally coupled to the seal structure 112 and used in another way to transport the seal structure 112 in its contracted configuration into the open hole section 102 of the well hole 104. As noted briefly above, the outer diameter of the sealing structure 112 in its contracted configuration may be small enough to axially traverse the axial length of the production pipe 108 (figure 1) without causing any obstruction therein. The conveying device 402 may extend from the well surface in some modalities it may be or otherwise use one or more mechanisms such as, but not limited to, cable line cable, coiled pipe, coiled pipe with line conductor cable, drill pipe, tubing, sheathing, combinations thereof, or the like.
    [0044] [00044] Before bringing the seal structure 112 into the well hole 104, the diameter of the open hole section 102 can be measured or otherwise calibrated to determine an approximate target diameter to seal the particular portion of the hole section open hole 102. Consequently, an appropriately sized sealing structure 112 can be chosen and brought into the well hole 104 to properly seal the inner radial surface of the well hole 104.
    [0045] [00045] The development device 404 can also be incorporated in the sealing structure 112 and transported into the open bore section 102 at the same time with the sealing structure 112, using the transport device 402. Specifically, the sealing device development 404 can be operationally connected or operably connectable to the sealing structure 112 and in at least one embodiment it can be arranged or otherwise accommodated within the sealing structure 112 when the sealing structure 112 is in its contracted configuration. In other embodiments, the sealing structure 112 and the development device 404 can be brought into the well bore 104 separately without departing from the scope of the disclosure. For example, in at least one embodiment the sealing structure 112 and the development device 404 can be displaced axially from each other along the length of the transport device 402 when they are brought into the well bore 104. In others embodiments the sealing structure 112 and the development device 404 can be brought in separate journeys into the well bore 104.
    [0046] [00046] The development device 404 can be any type of fixed expansion tool such as, but not limited to, an inflatable balloon, a hydraulic adjustment tool, for example, an inflatable or similar plug element, a mechanical plug element, an expandable actuator, a scissor mechanism, a wedge, a piston device, a mechanical actuator, an electric solenoid, a plug-type device, for example, a conically shaped device, configured to be pulled or pushed through the seal 112, a ball-type apparatus, a rotary type expander, a flexible or variable diameter expansion tool, a small diameter change conical plug, combinations thereof, or the like. Additional description and discussion with respect to suitable 404 development devices can be found in US Patent No. 8,230,913 previously incorporated for reference.
    [0047] [00047] Referring to figure 4B, the sealing structure 112 is shown when it is expanded using the development device taken as example 404 according to one or more modalities. In some embodiments as shown, the sealing structure 112 is expanded until it engages the inner radial surface of the open bore section 102. Sealing element 208 may or may not be included with sealing structure 112 to create an annular seal between the structure seal 112 and the inner radial surface of well bore 104. As shown, the development device 404 can serve to deform the seal structure 112 in such a way that the seal section 202, the connecting sections 204a, b and the sections transition 206a, b expand radially, and thus become easily apparent.
    [0048] [00048] In embodiments where the development device 404 is a hydraulic adjustment tool, for example, the development device 404 can be inflated or acted in another way, in such a way that it radially expands the sealing structure 112. In such cases embodiments the development device 404 can be actuated or inflated in another way using a commercially available RDT ™ reservoir description tool from Halliburton Energy Services of Houston, Texas, USA. In other embodiments, the development device 404 can be inflated using fluid pressure applied from the surface, or from an adjacent device arranged in the open bore section 102.
    [0049] [00049] In one or more embodiments the sealing structure 112 can be expanded progressively in discrete sections of controlled length. To accomplish this, the development device 404 may include expandable or inflatable short-length obturators designed to expand finite and predetermined lengths of the sealing structure 112. In other embodiments the development device 404 can be configured to expand radially in a first location around along the length of the seal structure 112 and thereby radially deform or expand the seal structure 112 at this first location and then deflate and move axially to a second location where the process is repeated. At each progressive location within the sealing structure 112 the development device 404 can be configured to expand at various radial points around the inner radial surface of the sealing structure 112, thereby reducing the number of movements required to expand the entire structure 112 .
    [0050] [00050] Those skilled in the art will recognize that using short expansion lengths can help to minimize the possibility of rupture of the seal structure 112 during the expansion process. In addition, expanding the seal structure 112 in several expansion movements can help the seal structure 112 to achieve better radial conformation to the variable diameter of the open bore section 102.
    [0051] [00051] In operation the sealing structure 112 can serve to seal a portion of the open hole section 102 of the well hole 104 of the unwanted fluid flow inlet from the surrounding underground formations. As a result, intelligent production operations can be assumed at predetermined locations along the length of well hole 104. Sealing structure 112 can also have resistive structural strength in its expanded form and, therefore, be used as a structural element within the well hole 104, configured to help prevent collapse of well hole 104. In still other embodiments, the sealing structure 112 can be used as a conduit for the transport of fluids through it.
    [0052] [00052] Referring to figure 4C, the truss structure 114 is illustrated in its contracted configuration as arranged within, or otherwise, being extended through the sealing structure 112. As with the sealing device 112, the truss structure 114 can be transported or transported in another way to the open hole section 102 of the well hole 104 using transport device 402 and can have a diameter in its contracted configuration that is small enough to axially traverse the production pipe 108 ( figure 1). In some embodiments, the truss structure 114 may be brought contiguously or otherwise nested within the sealing structure 112 in a single entrance to the well hole 104. However, such an embodiment may not be able to provide such collapse resistance. or expansion ratio when developing, since the volume available within the production pipeline 108 can limit how robust the materials that are used to manufacture the sealing and truss structures 112, 114 are.
    [0053] [00053] Consequently, in other embodiments as illustrated here, the truss structure 114 can be brought into the open bore section 102 independently of the sealing structure 112, such as after the development of the sealing structure 112 and otherwise during the course of a second entry into well hole 104. This may prove to be advantageous in modalities where higher expansion ratios or higher collapse ratings are desired or otherwise required within well 104. In such modalities , the hole 100 completion system below can be mounted at several entrances to well hole 104 where the sealing structure 112 is installed separately from the truss structure 114.
    [0054] [00054] To properly position the truss structure 114 within the sealing structure 112, in at least one mode the truss structure 114 can be configured to land, for example, on one or more profiles (not shown) located, or otherwise defined, in the sealing structure 112. A profile taken as an example can be a mechanical profile on this sealing structure 112, which can correspond with the truss structure 114 to create a resistance for movement by the conveyor 402. This resistance motion can be measured as a force, as a reduction in motion, as an increase in current for the transport motor, as a decrease in voltage for a transport motor, etc. The profile can also be an electromagnetic profile that is detected by the 404 development device. The electromagnetic profile can be a magnet or magnet pattern, an RFID tag, or an equivalent profile, which determines a unique location.
    [0055] [00055] In some embodiments the profiles can be defined in one or more of the connection sections 204a, b which can have a known diameter in the expanded configuration. The known expanded diameter of connection sections 204a, b can prove advantageous in precisely locating an expanded sealing structure 112, or otherwise connecting a sealing structure 112 to a subsequent or preceding sealing structure 112 in the completion system hole below 100. In addition, having a known diameter in connection sections 204a, b can provide a means by which an accurate or precise location within system 100 can be determined.
    [0056] [00056] Referring to figure 4D, the truss structure 114 is shown as being expanded within the sealing device 112. Similar to the sealing device 112, the truss structure 114 can be forced into its expanded configuration using the development device 404. In at least one embodiment, the development device 404 is an inflatable plug element and the inflation fluid used to act the plug element can be pumped from the surface through a drill pipe or tube, a mechanical pump, or through an electric pump bore down, which is energized by means of cable line cable.
    [0057] [00057] When the development device 404 expands, it forces the truss structure 114 to also expand radially. In modalities where the truss structure 114 includes bistable / multistable expandable cells 302 (figure 3B), in a certain expansion diameter the bistable / multistable expandable cells 302 reach a critical geometry where the bistable / multistable fitting effect is initiated and the structure lattice 114 expands autonomously. Similar to the expansion of the sealing structure 112, the development device 404 can be configured to expand the truss structure 114 in several discrete locations. For example, the development device 404 can be configured to expand radially at a first location along the length of the truss structure 114 and then deflate and move axially to a second, third, fourth etc., locations where the process is repeated.
    [0058] [00058] After the truss structure 114 is fully expanded, the development device 404 is contracted radially once again and removed from the developed truss structure 114. In some embodiments the truss structure 114 contacts the entire interior radial surface of the truss structure. expanded seal 112. In other embodiments, however, the lattice structure 114 can be configured to contact only a few discrete locations on the inner radial surface of the expanded seal structure.
    [0059] [00059] In operation, the truss structure 114 in its expanded configuration supports the sealing structure 112 against collapse. In cases where the sealing frame 112 engages the inner radial surface of the borehole 104 the truss structure 114 can also provide collapse resistance against the borehole 104 in the open bore section 102. In other embodiments, especially arrangements where the truss structure 114 employs bistable / multistable expandable cells 302 (figure 3B) the truss structure 114 can further be configured to assist the sealing structure 112 to expand for its complete development or expanded configuration. For example, the snapping effect of the bistable / multistable expandable cells 302 may exhibit sufficient expansive force that the material of the sealing structure 112 is forced radially outward in response to it.
    [0060] [00060] Referring now to figure 5, with continued reference to figures 1, 2A-2B and 4A-4B, there is illustrated a cross-sectional view of a sealing structure taken as example 112 in progressive forms expanded according to one or more modalities. Specifically, the outlined sealing structure 112 is illustrated in a first unexpanded state 502a, a second expanded state 502b and a third expanded state 502c, where the second expanded state 502b has a larger diameter than the first unexpanded state 502a the third expanded state 502c has a larger diameter than the second expanded state 502b. It will be appreciated that the illustrated sealing structure 112 can be representative of a sealing structure 112 that is part of or an extreme section 106a or an intermediate section 106b as described above with reference to figure 1, and without departing from the scope of the disclosure .
    [0061] [00061] As shown, the sealing structure 112 can be made of a corrugated material such as metal, or other material, thereby defining a plurality of contiguous expandable folds 504, i.e., corrugations. Those skilled in the art will easily appreciate that corrugated tubing can simplify the expansion process of the sealing structure 112, extend the potential expansion diameter change ratio, reduce the energy required to expand the sealing structure 112, and also allow a thickness increased thin wall when compared to related prior art applications. In addition, as illustrated, the sealing structure 112 can have a sealing element 506 placed around its outer radial surface. In other embodiments, however, as discussed above, the sealing element 506 can be omitted. In at least one embodiment the sealing element 506 may be similar to the sealing element 208 of figures 2A-2B, and therefore will not be described in detail again.
    [0062] [00062] In the first unexpanded state 502 the sealing structure 112 is in its compressed configuration and capable of being brought into the open hole section 102 of the well hole 104 through the production pipe 108 (figure 1). Folds 504 allow seal structure 112 to be compacted for contracted configuration, but also allow seal structure 112 to expand when folds flatten during expansion. For reference, the truss structure 114 is also shown in the first unexpanded state 502a. As described above, the truss structure 114 may also be able to be brought into the open hole section 102 through the existing production pipe 108 and is therefore shown in Figure 5 as having essentially the same diameter as the structure 112 in their respective contracted configurations.
    [0063] [00063] As will be appreciated by those skilled in the art, however, in modalities where the truss structure 114 is brought into the well bore 104 simultaneously with the sealing structure 112, the diameter of the truss structure 114 its The contracted configuration should be smaller than as illustrated in figure 5. In fact, in such modalities, the truss structure 114 should have a diameter in its contracted configuration small enough to be accommodated within the interior of the sealing structure 112.
    [0064] [00064] In the second expanded state 502b, the sealing structure 112 can be expanded to an intermediate diameter, for example, a diameter somewhat between the contracted and fully expanded configurations. As illustrated, in the second expanded state 502b, several peaks and valleys can remain in the folds 504 of the sealing structure 112, but the amplitude of the folds 504 is dramatically decreased when the material is gradually flattened in the radial direction. In one or more embodiments the intermediate diameter may be a predetermined diameter offset from the inner radial surface of the open bore section 102, a diameter where the sealing structure 112 engages a portion of the inner radial surface of the open bore section 102.
    [0065] [00065] Where the sealing structure 112 engages the inner radial surface of the open hole section 102, the sealing element 506 can be configured to seal against said surface, thereby preventing direct communication from either the hole above or the hole below in relation to the structure sealing ring 112. In some embodiments the sealing element 506 may be swollen or otherwise configured to expand to seal through a range of variable diameters on the inner radial surface of the open bore section 102. Such swelling expansion may take into account abnormalities in well bore 104 such as, but not limited to, collapse, slipping, erosion, combinations thereof, and the like. When the sealing element 506 swells, or otherwise expands, the valleys of the sealing structure 112 in the second expanded state 502b can be filled.
    [0066] [00066] In the third expanded state 502c, the sealing structure 112 can be expanded to its fully expanded configuration or diameter. In the fully expanded configuration the peaks and valleys of the folds 504 can be substantially reduced or otherwise all eliminated. Furthermore, in the expanded configuration, the sealing structure 112 can be configured to engage, or otherwise come into close contact with, the inner radial surface of the open bore section 102. As discussed briefly above, in some embodiments the sealing element 506 can be omitted and the sealing structure 112 itself can instead be configured to engage the inner radial surface of the open bore section 102 in sealing.
    [0067] [00067] Referring now to figures 6A-6D, with continued reference to figures 1 and 4A-4D, progressive views of constructing or otherwise extending the axial length of the hole completion system below 100, within a section, are illustrated open hole 102 of well hole 104 according to one or more disclosure modalities. As illustrated, an end section 106a may have already been installed successively inside well bore 104 and, in at least one embodiment, its installation may be representative of the description provided above with respect to figures 4A-4D. In particular, the end section 106a can be completed with an expanded sealing structure 112 and at least one expanded truss structure 114 arranged within the expanded sealing structure 112. Again, however, those skilled in the art will easily recognize that the extreme section 106a as shown installed in figures 6A-6D can also be replaced by an installed intermediate section 106b without departing from the scope of the disclosure.
    [0068] [00068] The below 100 hole completion system can be extended into well hole 104 by bringing one or more intermediate sections 106b into open hole section 102 and coupling intermediate section 106b to the distal end of an already sealed structure expanded 112 from a preceding end or intermediate section 106a, b. Although an intermediate section 106b is shown in figures 6A-6 d as extending the axial length of the system 100 from an installed end section 106a, it will be appreciated that another extreme section 106a can also be used to extend the axial length of the system 100 without depart from the scope of the disclosure.
    [0069] [00069] As illustrated, the conveyor device 402 can again be used to transport, or otherwise transport, the sealing structure 112 of the intermediate section 106b hole down into the open hole section 102. As with previous embodiments, in its contracted configuration, the sealing structure 112 of the intermediate section 106b may have a diameter small enough to pass through an existing production pipe 108 (figure 1) into the well hole 104 to reach the appropriate location within the open hole section 102. In addition, the diameter of the sealing structure 112 in its contracted configuration may be small enough to pass through the expanded and expanded section 106a. As outlined, the sealing structure 112 of the intermediate section 106b can be brought into the well bore 104 together with the development device 404 which can be configured to expand the sealing structure 112 when actuated.
    [0070] [00070] In one or more embodiments, the sealing structure 112 of the intermediate section 106b can be brought into the extreme section 106a and configured to land on a reinforcement 602 defined therein. In at least one embodiment the reinforcement 602 can be defined in the distal connection section 204b of the sealing structure 112 of the extreme section 106a where there is a known diameter in its expanded configuration. In other embodiments, however, the reinforcement 602 can be defined by the truss structure 114 of the extreme section 106a when arranged in the known diameter of the connecting section 204b. In any case, the sealing structure 112 of the intermediate section 106b can be brought through the end section 106a in such a way that the proximal connection section 204a of the intermediate section 106b axially overlaps the distal connection section 204b of the extreme section 106a by a distance short. In other embodiments, however, the adjacent sections 106a, b do not necessarily overlap axially in the adjacent connecting sections 204a, b, but they can be arranged in a relationship axially against it displaced by a short distance from each other, without departing from the scope of disclosure.
    [0071] [00071] Referring to figure 6B, expansion of the sealing structure 112 of the intermediate section 106b is shown using the development device 404 according to one or more modalities. In some embodiments, the fully expanded diameter of the sealing structure 112 of the intermediate section 106b may be the same dimension as the fully expanded diameter of the sealing structure 112 of the extreme section 106a such that it can also be configured to contact the inner radial surface of the open hole section 102 and potentially form a seal between them. In some embodiments, a sealing element (not shown) such as sealing element 208 of figures 2A-2B can be placed around the outer radial surface of the sealing structure 112 of the intermediate section 106b to provide a seal over that particular area in the well hole 104.
    [0072] [00072] In other embodiments, the sealing structure 112 of the intermediate section 106b can be configured as a cover element as briefly described above, and thereby configured to expand to a smaller diameter. In still other embodiments, the sealing structure 112 of the intermediate section 106b can be configured as an element that assembles as briefly described above and configured to expand to a minimum bore diameter. In such embodiments, no sealing element is placed around the outer radial surface of the sealing structure 112, thereby allowing for a thicker wall material, and also minimizing costs.
    [0073] [00073] To expand the sealing structure 112 of the intermediate section 106b as with previous embodiments, the development device 404 can be configured to simultaneously swell and force the sealing structure 112 to expand radially. When the sealing structure 112 of the intermediate section 106b expands, its proximal connecting section 204a expands radially so that its outer radial surface engages the inner radial surface of the distal connecting section 204b of the extreme section 106a thereby forming a mechanical seal between they. In other embodiments, a sealing element 604 can be placed around one or both of the outer radial surfaces of the proximal connecting section 204a or the inner radial surface of the distal connecting section 204b. The sealing element 604, which may be similar to the sealing element 208 described above (i.e., rubber, swelling and non-swelling elastomer, etc.), can help to form a fluid tight seal between adjacent sections 106a, b. In some embodiments, the sealing element 604 serves as a type of glue between adjacent sections 106a, 106b configured to increase the axial strength of the system 100.
    [0074] [00074] In still other embodiments, the sealing element 604 can be replaced by a metal seal that can be deposited in the overlapping section between the proximal connection section 204a of the intermediate section 106b and the distal connection section 204b of the extreme section 106a. For example, in at least one modality a galvanic reaction can be created, which uses a sacrificial anode to deposit the material in the cathode of the sealing location. Such sealing concepts are described in US Patent Application number 12 / 570,271 co-owned, entitled “Forming Structures in a Well In-Situ” (“Forming structures in a well in-situ”), the content of which is here with this incorporated for reference. Consequently, the sealing connection between adjacent sections 106a, b, either by mechanical sealing, or sealing element 604, or otherwise, can be configured to provide the system 100 with a sealed and robust structural connection and a conduit for the transport of fluid in it.
    [0075] [00075] Referring to figure 6C, a lattice structure 114 is shown being taken into the well hole 104 into the expanded sealing structure 112 of the intermediate section 106b according to one or more modalities. The truss structure 114 in its contracted configuration is specifically illustrated, being transported into the open hole section 102 using the transport device 402. As with previous modalities, the truss structure 114 can have a diameter in its contracted configuration that it is small enough to pass through production pipe 108 (figure 1), but simultaneously small enough to extend through the preceding extreme section 106a without causing obstruction. In some embodiments, the truss structure 114 may be brought contiguously or otherwise nested within the sealing structure 112, in a single entry into the well bore 104. In other embodiments, however, as illustrated here, the truss structure 114 can be brought into the open bore section 102 independently of the sealing structure 112, such as after the development of the sealing structure 112.
    [0076] [00076] Referring to figure 6D, the truss structure 114 is shown to be expanded within the sealing device 112 using the development device 404. When the development device 404 expands, it forces the truss structure 114 to also expand radially. After the truss structure 114 is fully expanded, the development device 404 can be contracted radially and removed from the developed truss structure 114. In its expanded configuration the truss structure 114 provides radial support for the sealing structure 112, and with this helps to prevent the collapse of well hole 104 in the open bore section 102. In addition, expanding the truss structure 114 can help generate a more robust seal between the proximal connection section 204a of the intermediate section 106b and the cross section distal connection 204b of end section 106a.
    [0077] [00077] In addition to the function of providing a mechanical seal between the proximal and distal connecting sections 204a, b, it may be desirable to provide a higher axial torsion resistance component on the inner surface of the distal connecting section 204b and the outer surface of the proximal connection section 204a. In at least one embodiment this can be achieved by employing one or more conformed male / female accessories such as a set of grooves defined in the tangential and / or longitudinal directions. The grooves can be configured to engage correspondingly to one another when said surfaces are pressed against each other. In some embodiments, the additional self-healing material can be added between said grooves and can provide an even better and more robust connection. As will be appreciated, other mechanical adjustment solutions fit between the proximal and distal connection sections 204a, b can also be used without departing from the scope of the disclosure.
    [0078] [00078] It will be appreciated that each additional length of the sealing structure 112 added to the hole completion system below 100 does not need to be structurally supported within it with a corresponding truss structure 114. Instead, the material thickness of the sealing structure additional 112 can be dimensioned to provide sufficient collapse resistance, without the need to be supplemented with the truss structure 114. In other embodiments, the truss structure 114 can be expanded within only a few additional selected lengths of sealing structure 112, for example example, in each other additional sealing structure 112, each third, fourth, etc., or can be added randomly, depending on the characteristics of the well. In some embodiments, truss structures 114 can be placed on additional sealing structures 112 only where necessary, for example, only where collapse resistance is particularly required. In other locations the truss structure 114 can be omitted without departing from the scope of the disclosure.
    [0079] [00079] In some embodiments, separate unconnected lengths of individual truss structures 114 can be inserted into the open hole section 102 of the well hole 104 and expanded with their corresponding ends separated or in proximity to them. In at least one embodiment, individual truss structures 114 can be configured to cooperatively form a longer truss structure 114 using one or more couplings arranged between adjacent truss structures 114. This includes, but is not limited to, use of bistable truss structures 114 coupled by bistable couplings that remain in function when expanding. For example, in some embodiments a continuous length of coupled bistable truss structures 114 can be placed in a series of several expanded sealing structures 112 and expanded successively until the truss structures 114 cooperatively support the corresponding sealing structures 112.
    [0080] [00080] In some embodiments, separate unconnected lengths of individual truss structures 114 can be inserted into the open hole section 102 of the well hole 104 and expanded with their corresponding ends axially overlapping for a short distance. For example, in at least one embodiment, a short length of a preceding truss structure 114 can be configured to extend to a subsequent truss structure 114 and therefore expanded at least partially within the preceding expanded truss structure 114. As will be appreciated, this can prove to be a simple way to create at least some axial connection by friction or shape adjustment and / or otherwise, to ensure that there is always sufficient support for the surrounding sealing structures 112 over its entire length .
    [0081] [00081] Those skilled in the art will easily appreciate the many advantages that the disclosed systems and methods can provide. For example, the below 100 hole completion system is capable of being operated through existing production piping 108 (figure 1) and then mounted in an open hole section 102 of well hole 104. Consequently, production piping 108 does not it is required to be pulled out of well hole 104 before installing system 100, thereby saving a significant amount of time and expense. Another advantage is that system 100 can be brought and installed without the use of equipment on the surface. Instead, the system 100 can be extended into the open hole section 102 entirely in cable line, flat cable line, coiled tubing or joined tubing. In addition, it will be appreciated that the hole below 100 completion system can be constructed progressively, either towards or away from the surface within well hole 104 without departing from the scope of the disclosure. Furthermore, the final interior dimension of the expanded sealing structures 112 and lattice structures 114 may allow the transport of additional lengths of standard diameter production piping through said structures to more distal locations in the well bore.
    [0082] [00082] Another advantage is that the below 100 hole completion system provides the development and expansion of the sealing and truss structures 112, 114 on separate descents into the open hole section 102 of the well hole 104. As a result, the undeveloped system 100 is able to pass through a much smaller diameter of production pipe 108 and there would be less weight for each component that is brought into the well bore 104. In addition, this allows for longer sections 106a, b to be brought into longer horizontal portions of well hole 104. Another advantage gained is the ability to increase the material thickness of each structure 112, 114, which results in stronger components and the ability to add sealing material additional, for example, sealing elements 208. Yet another advantage gained is that there is more space available for development device 404, which allows for higher inflation pressures and increased expansion ratios. As a result, system 100 can be used as desired for high expansion conditions.
    [0083] [00083] The modalities taken as an example of the borehole 100 computing system disclosed herein, can be brought into the open bore section 102 of the borehole 104 using one or more borehole tractors, as known in the art. In some embodiments, the tractor and related tools can be transported to open hole section 102 using cable line or flat cable as noted above. As can be appreciated, the cable line can provide increased power for longer tools reaching further out into horizontal wells. As will be appreciated, the modalities taken as an example of the borehole completion system that are disclosed here, can be configured to be brought in through the original top completion column installed in an existing well. Consequently, each component of the borehole completion system below 100 may be required to pass through the constraints of the upper completion pipe and upper completion components as known to those skilled in the art.
    [0084] [00084] In some modalities, the modalities taken as an example of the hole completion system below 100 disclosed here, can be pushed to a location within the open hole section 102 of well hole 104 by pumping or pushing into the well. In operation, one or more sealing or flow restriction units can be employed to restrict fluid flow and pull or push the tool column into or out of the well. In at least one mode this can be combined with the cable line shifting method for part or all of the operation as needed. Where “pushing” operations encounter “thief zones” in the well, these areas can be isolated when well construction continues. For example, chemical and / or mechanical insulation can be employed to facilitate insulation. In addition, tool recovery may be limited by the capacity of the particular well to flow.
    [0085] [00085] Therefore, the present invention is well adapted to achieve the mentioned purposes and advantages, as well as those that are inherent to it. The particular modalities disclosed above are only illustrative, since the present invention can be modified and made practical in different but equivalent ways, evident to those skilled in the art who have the benefit of these teachings. In addition, no limitation is designed for the construction or design details shown here, other than as described in the claims below. Therefore, it is evident that the particular illustrative modalities disclosed above can be altered, combined or modified, all such variations being considered within the scope and spirit of the present invention. The invention disclosed here in an illustrative manner can be appropriately practiced in the absence of any element that is not specifically disclosed here and / or any optional element disclosed herein. Although compositions and methods are described in terms of "comprising", "containing" or "including", various components or stages of the compositions and methods can also "consist essentially of" or "consist of" various components and stages. All numbers and ranges disclosed above may vary by some amount. Whenever a numerical range with a lower limit and an upper limit is disclosed, any number of any included range that falls within the range is specifically disclosed. In particular, each range of values (in the form "from approximately a to approximately b", or in an equivalent manner "from approximately a to b", or in an equivalent manner "from approximately a, b") disclosed herein, should be understood as describe each number and range covered within the broadest range of values. Also, the terms of the claims have their full ordinary meaning unless otherwise explicitly and clearly defined by the claimant. In addition, the indefinite articles o, um, as used in the claims, are defined here to mean one or more than one of the element it introduces. If there is any conflict in the uses of a word or term in this specification and one or more patents or other documents that may be incorporated herein for reference, definitions that are consistent with this specification should be adopted.
    权利要求:
    Claims (10)
    [0001]
    Downhole completion system (100, 600, 700, 800), comprising: a sealing structure (112) movable between a contracted configuration and an expanded configuration; a truss structure (114) also movable between a contracted configuration and an expanded configuration, in which when in their respective contracted configurations the sealing (112) and truss structures (114) are each capable of axially traversing piping. production (108) extended into a well bore (104); a transport device (402) configured to transport the sealing (112) and truss (114) structures in their respective configurations contracted through the production pipe (108) and up to an open hole section (102) of the well hole (104); and a development device (404) configured to radially expand the sealing (112) and truss structures (114) from their respective contracted configurations to their respective expanded configurations, the truss structure (114) being expanded while at least partially arranged within the sealing structure (112); and characterized by the fact that it comprises: a sealing element (208, 506) placed around the sealing structure (112) for sealing an inner radial surface of the open hole section (102).
    [0002]
    System according to claim 1, characterized in that when in the expanded configuration, the sealing structure (112) engages an inner radial surface of the open hole section (102) and / or the truss structure radially supports the sealing structure (112).
    [0003]
    System according to claim 1, characterized in that (i) the sealing structures (112) and truss (114) are transported into the open hole section (102) simultaneously, the truss structure ( 114) being nested within the sealing structure (112) when the sealing structure (112) is in its contracted configuration; or (ii) the truss structure (114) is transported into the open bore section (102) independent of the sealing structure (114).
    [0004]
    System according to claim 1, characterized in that the truss structure (114) is an expandable device that defines a plurality of expandable cells that facilitate expansion of the truss structure of the configuration (114) contracted for the expanded configuration; and preferably: (I) wherein at least one of the plurality of expandable cells includes a thin strut connected to a thick strut, preferably where at least one of the plurality of expandable cells is a bistable cell or a multistable cell; or (II) wherein an axial length of the truss structure (114) in the contracted and expanded configurations is the same.
    [0005]
    System according to claim 1, characterized in that the sealing structure is an elongated tubular that defines a plurality of folds that extend longitudinally, and the truss structure is configured to help radially expand the sealing structure and thereby decrease an amplitude of the folds that extend longitudinally.
    [0006]
    System according to claim 1, characterized by the fact that an elastomer that swells is placed around at least a part of the truss structure (114).
    [0007]
    Method of completing an open hole section (102) of a well hole (104), comprising: transport a sealing structure (112) to the open hole section (102) of the well hole (104) with a transport device (402) operationally coupled to it, characterized in that the sealing structure (112) is mobile between a contracted configuration and an expanded configuration and having a sealing element (208, 506) placed around the sealing structure (112); transporting a truss structure (114) to the open hole section (102) of the well hole with (104) the transport device (402) operatively coupled to it, and the truss structure (114) also being movable between a contracted configuration and expanded configuration; radially expand the sealing structure (112) to its expanded configuration with development device (404) when the sealing structure (112) is arranged in the open bore section (102) and thereby engaging an inner radial surface of the section in sealing open-bore (102) with the sealing element (208, 506); radially expanding the truss structure (114) to its expanded configuration with the development device (404), the truss structure (114) being expanded while arranged within the sealing structure (112); and radially support the sealing structure (112) with the truss structure (114).
    [0008]
    Method according to claim 7, characterized by the fact that the sealing (112) and truss (114) structures are transported to the open bore section (102) still comprises transporting the sealing (112) and truss (114) structures ) in their respective configurations contracted through production piping (108) arranged inside the well bore (104).
    [0009]
    Method according to claim 7, characterized in that it also comprises transporting the sealing (112) and truss structures (114) to the open hole section (102) simultaneously, the truss structure (112) being nested inside the sealing structure (112) when the sealing structure (112) is in its contracted configuration.
    [0010]
    Method according to claim 7, characterized in that the truss structure (114) radially expands to its expanded configuration, further comprising expanding a plurality of expandable cells defined in the truss structure (114); and preferably wherein expanding the plurality of expandable cells still comprises radially expanding the truss structure (114) such that an axial length of the truss structure (114) in the contracted and expanded configurations is the same, at least one of the expandable cells comprising a thin strut connected to a thick strut.
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    同族专利:
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    法律状态:
    2018-12-04| B06F| Objections, documents and/or translations needed after an examination request according art. 34 industrial property law|
    2020-01-28| B06U| Preliminary requirement: requests with searches performed by other patent offices: suspension of the patent application procedure|
    2020-08-18| B09A| Decision: intention to grant|
    2020-12-01| B16A| Patent or certificate of addition of invention granted|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 30/01/2013, OBSERVADAS AS CONDICOES LEGAIS. |
    优先权:
    申请号 | 申请日 | 专利标题
    US201261602111P| true| 2012-02-23|2012-02-23|
    US61/602,111|2012-02-23|
    US13/672,918|US9464511B2|2012-02-23|2012-11-09|Expandable tubing run through production tubing and into open hole|
    US13/672,918|2012-11-09|
    PCT/US2013/023720|WO2013126191A1|2012-02-23|2013-01-30|Expandable tubing run through production tubing and into open hole|
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