In situ expandable tubulars

Abstract

Expandable tube members that are fabricated from a composite material that includes a structural plastic, which structural plastic includes phase change materials that undergo a permanent expansion upon exposure to wellbore conditions. This permanent expansion of the structural plastic causes the expandable tube member to expand radially and/or longitudinally without the use of an expansion tool. The expandable tube member can be used to control fluid loss, patch wells, stabilize a formation in a wellbore, enhance flow, provide sand screening, and repair damaged pipes, casings, or liners.

1 - 16 . (canceled) 
     
     
         17 . An expandable tube member for use in a geologic structure; said expandable tube member is formed of a body having an outer surface; said body is at least partially formed of an expandable composite material; said expandable composite material includes a polymer matrix material and a plurality of expandable filler particles that are dispersed in said polymer matrix material; said polymer matrix material includes one or more compounds selected from the group consisting of polyaramids, nylon/polyarylates, polycarbonates, polysulfones, polyureas, polyesters, epoxies, polypropylene, and polyethylene; said expandable filler includes one or more materials selected from the group consisting of magnesium oxide, calcium oxide, lithium oxide, borate, selenium, iron, magnesium, manganese, germanium, calcium, aluminum, sodium, lithium, zinc, water-swellable clay, CO 2 -swellable clay, water-swellable phosphate, CO 2 -swellable phosphate, water-swellable carbide, CO 2 -swellable carbide, water-swellable silicate, CO 2 -swellable silicate, water-swellable borate, CO 2 -swellable borate, water-swellable sulfate material, and CO 2 -swellable sulfate material; said expandable filler constitutes 10-80 vol. % of said expandable composite material; said expandable composite material is formulated to expand when said expandable filler particles are partially or fully activated by one or more activation mechanisms; said expandable composite material when expanded 1) causing at least a portion of said body to expand and/or 2) causing an outer perimeter of said body to expand; said one or more activation mechanisms includes a) change in temperature about said expandable tube member and/or said expandable filler from the surface of a ground cavity to a particular location in said ground cavity, b) exposure of said expandable tube member and/or said expandable filler to a certain temperature or temperature range, c) change in pH about said expandable tube member and/or said expandable filler, d) exposure of said expandable tube member and/or said expandable filler to a certain pH or pH range, e) change in salinity about said expandable tube member and/or said expandable filler, f) exposure of said expandable tube member and/or said expandable filler to a certain salinity or salinity range, g) exposure of said expandable tube member and/or said expandable filler to an activation element or compound, h) change in pressure about said expandable tube member and/or said expandable filler from the surface of a ground cavity to a particular location in said ground cavity, i) exposure of said expandable tube member and/or said expandable filler to a certain pressure or pressure range, j) electrical stimulation of said expandable tube member and/or said expandable filler, k) exposure of said expandable tube member and/or said expandable filler to a certain sound frequency, and/or l) exposure of said expandable tube member and/or said expandable filler to a certain electromagnetic frequency; and
 wherein said expandable tube member is configured to be positioned about a portion of a pipe that is located in a geologic structure; and   wherein said expandable tube member configured to expanded between the pipe and the geologic structure to form a seal between the pipe and the geologic structure when said expandable tube member is exposed to said one or more activation mechanisms.   
     
     
         18 . The expandable tube member as defined in  claim 17 , wherein said expandable composite material is partially or fully formed of a thermoplastic or thermosetting polymer matrix material and a plurality of expandable filler particles that are reactive to water and/or CO 2 . 
     
     
         19 . The expandable tube member as defined in  claim 17 , wherein said expandable filler includes one or more materials that include magnesium oxide, calcium oxide, lithium oxide, borate, iron, magnesium, calcium, aluminum, sodium, zinc, boron, water-swellable clay, CO 2 -swellable clay, water-swellable phosphate, CO 2 -swellable phosphate, water-swellable carbide, CO 2 -swellable carbide, water-swellable silicate, CO 2 -swellable silicate, water-swellable borate, CO 2 -swellable borate, water-swellable sulfate material, and/or CO 2 -swellable sulfate material. 
     
     
         20 . The expandable tube member as defined in  claim 18 , wherein said expandable filler includes one or more materials that include magnesium oxide, calcium oxide, lithium oxide, borate, iron, magnesium, calcium, aluminum, sodium, zinc, boron, water-swellable clay, CO 2 -swellable clay, water-swellable phosphate, CO 2 -swellable phosphate, water-swellable carbide, CO 2 -swellable carbide, water-swellable silicate, CO 2 -swellable silicate, water-swellable borate, CO 2 -swellable borate, water-swellable sulfate material, and/or CO 2 -swellable sulfate material. 
     
     
         21 . The expandable tube member as defined in  claim 17 , wherein said expandable filler includes one or more of magnesium, calcium, iron, aluminum, sodium, and zinc. 
     
     
         22 . The expandable tube member as defined in  claim 20 , wherein said expandable filler includes one or more of magnesium, calcium, iron, aluminum, sodium, and zinc. 
     
     
         23 . The expandable tube member as defined in  claim 17 , wherein said polymer matrix material includes one or more compounds selected from the group consisting of polyaramids, nylon/polyarylates, polysulfones, polyureas, polyesters, epoxies, and polyethylene. 
     
     
         24 . The expandable tube member as defined in  claim 22 , wherein said polymer matrix material includes one or more compounds selected from the group consisting of polyaramids, nylon/polyarylates, polysulfones, polyureas, polyesters, epoxies, and polyethylene. 
     
     
         24 . The expandable tube member as defined in  claim 17 , wherein said expandable tube member further includes a reinforcement structure; said reinforcement structure includes one or more materials selected from the group consisting of reinforcing fibers, flakes, ribbons, ribs, and mesh; said reinforcement structure is configured to perform at least one or more functions of a) increasing hoop and collapse strength of said expandable tube member, b) constraining axial expansion of said expandable tube member, c) controlling an amount of maximum axial expansion of said expandable tube member, d) controlling an amount of liner expansion of said expandable tube member, and/or e) increasing burst and/or buckling limits of said expandable tube member. 
     
     
         25 . The expandable tube member as defined in  claim 24 , wherein said expandable tube member further includes a reinforcement structure; said reinforcement structure includes one or more materials selected from the group consisting of reinforcing fibers, flakes, ribbons, ribs, and mesh; said reinforcement structure is configured to perform at least one or more functions of a) increasing hoop and collapse strength of said expandable tube member, b) constraining axial expansion of said expandable tube member, c) controlling an amount of maximum axial expansion of said expandable tube member, d) controlling an amount of liner expansion of said expandable tube member, and/or e) increasing burst and/or buckling limits of said expandable tube member. 
     
     
         26 . The expandable tube member as defined in  claim 17 , wherein said expandable tube member further includes an outer coating that at least partially covers said outer surface of said body, said outer coating including an expandable material and/or a non-expandable material, said outer coating is configured to perform at least one or more functions of a) partially or fully conforming to an exterior surface of a wellbore wall or pipe during or after expansion of said expandable tube member, b) reducing friction as said expandable tube member is inserted into a wellbore or pipe prior to expansion or prior to full expansion of said expandable tube member, c) forming a partial or full liquid seal between said outer coating and the inner wall surface of a wellbore or a pipe during or after expansion of said expandable tube member, d) facilitating in centering said expandable tube member in a wellbore or pipe during or after expansion of said expandable tube member, e) securing said expandable tube member in position relative to the inner wall surface of a wellbore or pipe during or after expansion of said expandable tube member, f) limiting or preventing a flow of fluid into fractures in a wall cavity of a well bore or damaged pipe during or after expansion of said expandable tube member, g) providing structural integrity to an inner wall surface of a wellbore or pipe during or after expansion of said expandable tube member, and/or h) controlling a speed and/or a time of activation of said expandable filler particles. 
     
     
         27 . The expandable tube member as defined in  claim 25 , wherein said expandable tube member further includes an outer coating that at least partially covers said outer surface of said body, said outer coating including an expandable material and/or a non-expandable material, said outer coating is configured to perform at least one or more functions of a) partially or fully conforming to an exterior surface of a wellbore wall or pipe during or after expansion of said expandable tube member, b) reducing friction as said expandable tube member is inserted into a wellbore or pipe prior to expansion or prior to full expansion of said expandable tube member, c) forming a partial or full liquid seal between said outer coating and the inner wall surface of a wellbore or a pipe during or after expansion of said expandable tube member, d) facilitating in centering said expandable tube member in a wellbore or pipe during or after expansion of said expandable tube member, e) securing said expandable tube member in position relative to the inner wall surface of a wellbore or pipe during or after expansion of said expandable tube member, f) limiting or preventing a flow of fluid into fractures in a wall cavity of a well bore or damaged pipe during or after expansion of said expandable tube member, g) providing structural integrity to an inner wall surface of a wellbore or pipe during or after expansion of said expandable tube member, and/or h) controlling a speed and/or a time of activation of said expandable filler particles. 
     
     
         28 . The expandable tube member as defined in  claim 17 , wherein said expandable tube member further includes a sealing member on said outer surface of said body, said sealing member includes an expandable material and/or a non-expandable material, said sealing member is configured to perform at least one or more functions of a) partially or fully conforming to an exterior surface of a wellbore wall or pipe during or after expansion of said expandable tube member, b) reducing friction as said expandable tube member is inserted into a wellbore or pipe to expansion or prior to full expansion of said expandable tube member, c) forming a partial or full liquid seal between said sealing member and the inner wall surface of a wellbore or pipe during or after expansion of said expandable tube member, d) facilitating in centering said expandable tube member in a wellbore or pipe during or after expansion of said expandable tube member, e) securing said expandable tube member in position relative to the inner wall surface of a wellbore or pipe during or after expansion of said expandable tube member, f) limiting or preventing a flow of fluid into fractures in a wall cavity of a wellbore or damaged pipe during or after expansion of said expandable tube member, and/or g) providing structural integrity to an inner wall surface of a wellbore or pipe during or after expansion of said expandable tube member; said sealing member is or includes an elastomeric material; said sealing member is at least partially connected to said body by one or more arrangements that include a groove in said outer surface of said body, a slot in said outer surface of said body, an adhesive, a melted bond, a friction fit arrangement, and/or a mechanical attachment arrangement. 
     
     
         29 . The expandable tube member as defined in  claim 27 , wherein said expandable tube member further includes a sealing member on said outer surface of said body, said sealing member includes an expandable material and/or a non-expandable material, said sealing member is configured to perform at least one or more functions of a) partially or fully conforming to an exterior surface of a wellbore wall or pipe during or after expansion of said expandable tube member, b) reducing friction as said expandable tube member is inserted into a wellbore or pipe to expansion or prior to full expansion of said expandable tube member, c) forming a partial or full liquid seal between said sealing member and the inner wall surface of a wellbore or pipe during or after expansion of said expandable tube member, d) facilitating in centering said expandable tube member in a wellbore or pipe during or after expansion of said expandable tube member, e) securing said expandable tube member in position relative to the inner wall surface of a wellbore or pipe during or after expansion of said expandable tube member, f) limiting or preventing a flow of fluid into fractures in a wall cavity of a wellbore or damaged pipe during or after expansion of said expandable tube member, and/or g) providing structural integrity to an inner wall surface of a wellbore or pipe during or after expansion of said expandable tube member; said sealing member is or includes an elastomeric material; said sealing member is at least partially connected to said body by one or more arrangements that include a groove in said outer surface of said body, a slot in said outer surface of said body, an adhesive, a melted bond, a friction fit arrangement, and/or a mechanical attachment arrangement.