This invention relates generally to oil and gas exploration, and in particular to forming and repairing wellbore casings to facilitate oil and gas exploration.
Conventionally, when a wellbore is created, a number of casings are installed in the borehole to prevent collapse of the borehole wall and to prevent undesired outflow of drilling fluid into the formation or inflow of fluid from the formation into the borehole. The borehole is drilled in intervals whereby a casing which is to be installed in a lower borehole interval is lowered through a previously installed casing of an upper borehole interval. As a consequence of this procedure the casing of the lower interval is of smaller diameter than the casing of the upper interval. Thus, the casings are in a nested arrangement with casing diameters decreasing in downward direction. Cement annuli are provided between the outer surfaces of the casings and the borehole wall to seal the casings from the borehole wall. As a consequence of this nested arrangement a relatively large borehole diameter is required at the upper part of the wellbore. Such a large borehole diameter involves increased costs due to heavy casing handling equipment, large drill bits and increased volumes of drilling fluid and drill cuttings. Moreover, increased drilling rig time is involved due to required cement pumping, cement hardening, required equipment changes due to large variations in hole diameters drilled in the course of the well, and the large volume of cuttings drilled and removed.
During oil exploration, a wellbore typically traverses a number of zones within a subterranean formation. Wellbore casings are then formed in the wellbore by radially expanding and plastically deforming tubular members that are coupled to one another by threaded connections existing methods for radially expanding and plastically deforming tubular members coupled to one another by threaded connections are not always reliable and do not always produce satisfactory results. In particular, the threaded connections can be damaged during the radial expansion process. Furthermore, the threaded connections between adjacent tubular members, whether radially expanded or not, are typically not sufficiently coupled to permit the transmission of energy through the tubular members from the surface to the downhole location. Further, the damaged threads may permit undesirable leakage between the inside of the casing and the exterior of the casing.
The present invention is directed to overcoming one or more of the limitations of the existing procedures for forming new sections of casing in a wellbore.
According to one aspect of the present invention, a method of forming a wellbore casing within a borehole that traverses a subterranean formation is provided that includes assembling a tubular liner by coupling threaded portions of first and second tubular members having a multi-layer tubular insert between the threads of the first tubular member and the threads of the second tubular member, positioning the tubular liner assembly within a borehole, and radially expanding and plastically deforming the tubular liner assembly within the borehole wherein the multi-layer tubular insert includes a first layer having a first modulus of elasticity and a second layer coupled to the first layer having a second modulus of elasticity wherein the first modulus of elasticity is different from the second modulus of elasticity. According to another aspect of the present invention, a method of forming a wellbore casing within a borehole that traverses a subterranean formation is provided that includes assembling a tubular liner by coupling a multi-layer metallic insert assembly to a threaded portion of the first tubular member and coupling a threaded portion of a second tubular member to the threaded portion of first tubular member with the multi-layer tubular insert there between, and positioning the tubular liner assembly within a borehole and radially expanding and plastically deforming the tubular liner assembly and wherein the first tubular insert is a metal have a first modulus of elasticity and a second tubular insert is composed of a metal having a second modulus of elasticity different from the first modulus of elasticity. According to another aspect of the present invention, the multi-layers of the inner post tubular insert include a first insert of copper and a second tubular insert of cadmium.
According to another aspect of the present invention, both layers of the multi-layer tubular liner inserted between the threads of the wellbore casing members have a modulus of elasticity less than the tubular members. According to another aspect of the present invention, the multi-layer tubular insert includes a first tubular insert providing a fluidic seal after radially expanding and plastically deforming the tubular liner assembly, and another layer of the multi-layer insert provides a micro-fluidic seal after radially expanding and plastically deforming a tubular liner.
According to another aspect of the present invention, the multi-layer tubular liner includes a first, a second, and a third layer, each adjacent layer having a different modulus of elasticity.
According to another aspect of the present invention, the multi-layer tubular insert assembly includes a first, second, third, and fourth layer, each layer having a different modulus of elasticity from an adjacent layer.
According to another aspect of the present invention, a method of forming a wellbore casing within a borehole that traverses a subterranean formation is provided that includes expanding joined tubular members, such as joined wellbore casings, having a layer of a metallic alloy that has a first melting temperature prior to exposure to heat and strain as a second higher melting temperature after exposure to heat and or strain (know as a eutectic material) interposed between the joint prior to radially expanding the jointed tubular members.
Referring to
Referring to
Upon coupling the first and second tubular members, such as upon coupling the first and second wellbore casings 14 and 16, as depicted in
Referring to
The tubular sleeve 40 is preferably composed of electrically conductive material that are suitably malleable or flowable to be shaped mechanically, as for example copper, aluminum, light metal, and metal alloys. Steel alloys and other metal alloys with suitable electrically conductivity and with suitable malleability or suitable flow behavior may also be used. The inside diameter 42, of the tubular sleeve 40 is only slightly larger than the outside diameter of the first and second tubular members 14 and 16 at the joint 30. This means a cylindrical gap 44 between the inside surface 46 of sleeve 40 and the first and second outside surfaces 26 and 28 of wellbore casings 14 and 16, respectively. The outside diameter 48 of tubular sleeve 40 is slightly larger than the inside diameter 42 defining a thickness 49 that is relatively thin compared the thickness of the wellbore casings 14 and 16.
With reference to
In an exemplary embodiment, as illustrated in
In an exemplary embodiment, during the radial expansion and plastic deformation of the first and second tubular members, 14 and 16, the tubular sleeve 40 is also radially expanded and plastically deformed. In an exemplary embodiment, as a result, the tubular sleeve 40 may be maintained in circumferential tension and the overlapping end coupling portions, 18 and 20, of the first and second tubular members, 14 and 16, may be maintained in circumferential compression.
In
As more fully disclosed below and as referenced in co-pending U.S. provisional patent application No. 60/405,610, attorney docket 29751.119, filed on even date herewith and the disclosure of which is incorporated herein by reference, one or more layers or coatings of softer material, such as plastic, solder, or metallic material having a modulus of elasticity lower than the modulus of elasticity of the tubular members at the coupling joint, may be interposed between the joints, to facilitate sealing before and after expanding and plastically deforming joined tubular members such as wellbore casings. The interposed material may also be a material of the type having a lower melting point before deformation than after deformation. For example the material may be an exothermic material that initially releases energy upon stress or heat input thereby melting or plastically flowing at one temperature and subsequently without the further release of such heat energy having a higher melting point or plastic flow temperature.
In several exemplary embodiments, the first and second tubular members, 14 and 16, are radially expanded and plastically deformed using the expansion cone 80 in a conventional manner and/or using one or more of the methods and apparatus disclosed in one or more of the following: (1) U.S. patent application Ser. No. 09/454,139, attorney docket no. 25791.03.02, filed on Dec. 3, 1999, (2) U.S. patent application Ser. No. 09/510,913, attorney docket no. 25791.7.02, filed on Feb. 23, 2000, (3) U.S. patent application Ser. No. 09/502,350, attorney docket no. 25791.8.02, filed on Feb. 10, 2000, (4) U.S. patent application Ser. No. 09/440,338, attorney docket no. 25791.9.02, filed on Nov. 15, 1999, (5) U.S. patent application Ser. No. 09/523,460, attorney docket no. 25791.11.02, filed on Mar. 10, 2000, (6) U.S. patent application Ser. No. 09/512,895, attorney docket no. 25791.12.02, filed on Feb. 24, 2000, (7) U.S. patent application Ser. No. 09/511,941, attorney docket no. 25791.16.02, filed on Feb. 24, 2000, (8) U.S. patent application Ser. No. 09/588,946, attorney docket no. 25791.17.02, filed on Jun. 7, 2000, (9) U.S. patent application Ser. No. 09/559,122, attorney docket no. 25791.23.02, filed on Apr. 26, 2000, (10) PCT patent application Ser. No. PCT/US00/18635, attorney docket no. 25791.25.02, filed on Jul. 9, 2000, (11) U.S. provisional patent application Ser. No. 60/162,671, attorney docket no. 25791.27, filed on Nov. 1, 1999, (12) U.S. provisional patent application Ser. No. 60/154,047, attorney docket no. 25791.29, filed on Sep. 16, 1999, (13) U.S. provisional patent application Ser. No. 60/159,082, attorney docket no. 25791.34, filed on Oct. 12, 1999, (14) U.S. provisional patent application Ser. No. 60/159,039, attorney docket no. 25791.36, filed on Oct. 12, 1999, (15) U.S. provisional patent application Ser. No. 60/159,033, attorney docket no. 25791.37, filed on Oct. 12, 1999, (16) U.S. provisional patent application Ser. No. 60/212,359, attorney docket no. 25791.38, filed on Jun. 19, 2000, (17) U.S. provisional patent application Ser. No. 60/165,228, attorney docket no. 25791.39, filed on Nov. 12, 1999, (18) U.S. provisional patent application Ser. No. 60/221,443, attorney docket no. 25791.45, filed on Jul. 28, 2000, (19) U.S. provisional patent application Ser. No. 60/221,645, attorney docket no. 25791.46, filed on Jul. 28, 2000, (20) U.S. provisional patent application Ser. No. 60/233,638, attorney docket no. 25791.47, filed on Sep. 18, 2000, (21) U.S. provisional patent application Ser. No. 60/237,334, attorney docket no. 25791.48, filed on Oct. 2, 2000, (22) U.S. provisional patent application Ser. No. 60/270,007, attorney docket no. 25791.50, filed on Feb. 20, 2001, (23) U.S. provisional patent application Ser. No. 60/262,434, attorney docket no. 25791.51, filed on Jan. 17, 2001, (24) U.S. provisional patent application Ser. No. 60/259,486, attorney docket no. 25791.52, filed on Jan. 3, 2001, (25) U.S. provisional patent application Ser. No. 60/303,740, attorney docket no. 25791.61, filed on Jul. 6, 2001, (26) U.S. provisional patent application Ser. No. 60/313,453, attorney docket no. 25791.59, filed on Aug. 20, 2001, (27) U.S. provisional patent application Ser. No. 60/317,985, attorney docket no. 25791.67, filed on Sep. 6, 2001, (28) U.S. provisional patent application Ser. No. 60/3318,386, attorney docket no. 25791.67.02, filed on Sep. 10, 2001, (29) U.S. utility patent application Ser. No. 09/969,922, attorney docket no. 25791.69, filed on Oct. 3, 2001, (30) U.S. utility patent application Ser. No. 10/016,467, attorney docket no. 25791.70, filed on Dec. 10, 2001; (31) U.S. provisional patent application Ser. No. 60/343,674, attorney docket no. 25791.68, filed on Dec. 27, 2001; (32) U.S. provisional patent application Ser. No. 60/346,309, attorney docket no 25791.92, filed on Jan. 7, 2002; (33) U.S. provisional patent application Ser. No. 60/372,048, attorney docket no. 25791.93, filed on Apr. 12, 2002; (34) U.S. provisional patent application Ser. No. 60/380,147, attorney docket no. 25791.104, filed on May 6, 2002; (35) U.S. provisional patent application Ser. No. 60/387,486, attorney docket no. 25791.107, filed on Jun. 10, 2002; (36) U.S. provisional patent application Ser. No. 60/387,961, attorney docket no. 25791.108, filed on Jun. 12, 2002; (37) U.S. provisional patent application Ser. No. 60/391,703, attorney docket no. 25791.90, filed on Jun. 26, 2002; and (38) U.S. provisional patent application Ser. No. 60/397,284, attorney docket no. 25791.106, filed on Jul. 19, 2002, (39) U.S. provisional patent application Ser. No. 60/398,061, attorney docket no. 25791.110, filed on Jul. 24/ 2002, and (40) U.S. provisional patent application no. 60/339,240, attorney docket no. 25791.111, filed on Jul. 29, 2002, and (41) U.S. provisional patent application No. 60/405,610, attorney docket no. 25791.119, filed on even date herewith, the disclosures of which are incorporated herein by reference.
In several alternative embodiments, the first and second tubular members, 14 and 16, are radially expanded and plastically deformed using other conventional methods for radially expanding and plastically deforming tubular members such as, for example, internal pressurization and/or roller expansion devices such as, for example, that disclosed in U.S. patent application publication no. US 2001/0045284 A1, the disclosure of which is incorporated herein by reference.
The use of the tubular sleeve during (a) the coupling of the first tubular member to the second tubular member, (b) the placement of the first and second tubular members in the structure, (c) the radial expansion and plastic deformation of the first and second tubular members, and (d) magnetic impulse applying tubular sleeve to the overlapping coupling ends between the first and second tubular members provides a number of significant benefits. For example, the tubular sleeve 40 protects the exterior surfaces of the end portions, 18 and 20, of the first and second tubular members, 14 and 16, during handling and insertion of the tubular members within the structure 10. In this manner, damage to the exterior surfaces of the end portions, 18 and 20, of the first and second tubular member, 14 and 16, are prevented that could result in stress concentrations that could result in a catastrophic failure during subsequent radial expansion operations. In this manner, misalignment that could result in damage to the threaded connections, 22 and 24, of the first and second tubular members, 14 and 16, may be avoided. In addition, the relative rotation of the second tubular member with respect to the first tubular member, after the threaded coupling of the first and second tubular members is resisted by the tubular sleeve 40. Tubular sleeve 40 may also provide an indication of to what degree the first and second tubular members are threadably coupled. For example, if the tubular sleeve 40 can be easily rotated, that would indicate that the first and second tubular members, 14 and 16, are not fully threadably coupled and in intimate contact with the internal flange 36 of the tubular sleeve. Furthermore, the tubular sleeve 16 may prevent crack propagation during the radial expansion and plastic deformation of the first and second tubular members, 14 and 16. In this manner, failure modes such as, for example, longitudinal cracks in the end portions, 18 and 20, of the first and second tubular members may be limited in severity or eliminated all together. In addition, after completing the radial expansion and plastic deformation of the first and second tubular members, 14 and 16, the tubular sleeve 40 may provide a fluid tight metal-to-metal seal between interior surface of the tubular sleeve and the exterior surfaces of the end portions, 18 and 20, of the first and second tubular members. In this manner, fluidic materials are prevented from passing through the threaded connections, 22 and 24, of the first and second tubular members, 14 and 16, into the annulus between the first and second tubular members and the structure 10. Furthermore, because, following the radial expansion and plastic deformation of the first and second tubular members, 14 and 16, the tubular sleeve 40 may be maintained in circumferential tension and the end portions, 18 and 20, of the first and second tubular members, 14 and 16, may be maintained in circumferential compression, axial loads and/or torque loads may be transmitted through the tubular sleeve. In addition, the tubular sleeve 40 may also increase the collapse strength of the end portions, 18 and 20, of the first and second tubular members, 14 and 16.
With reference to
With reference to
In
In
A useful method of forming a wellbore casing within a borehole that traverses a subterranean formation has been described that includes a first wellbore casing for positioning within the borehole and coupling the first wellbore casing to a second wellbore casing for positioning within the borehole such that the second wellbore casing overlaps with and is coupled to a portion of the first wellbore casing thereby forming a joint, positioning a tubular sleeve so that it overlaps with and is coupled to at least a portion of the first wellbore casing and to a portion of the second wellbore casing, the tubular sleeve extending a length in either axial direction from the joint between the first and second wellbore casings, causing the tubular sleeve to collapse inwardly onto the respective end portions of the first and second wellbore casings and to sealingly engage the exterior surfaces of the end portions of the first and second wellbore casings respectively on either side of the joint there between, thereby facilitating sealing the joint.
In an exemplary embodiment, the method further includes regularly expanding and plastically deforming the overlapping portions of the first and second wellbore casing and regularly expanding and plastically deforming the tubular sleeve that was sealingly collapsed onto the overlapping portions of the first and second wellbore casings. In an exemplary embodiment, the exterior diameters of the first and second wellbore casings axially adjacent to the joint there between are substantially equal. In an exemplary embodiment, the inside diameters of the first wellbore casings and the inside diameter of the second wellbore casing are substantially equal. In an exemplary embodiment, the inside diameters of the first wellbore casing and the second wellbore casing are substantially constant.
It will further understood by those skilled in the art upon reading the foregoing disclosure and the claims that follow, and upon review of the drawings that the method may further include forming a wellbore casing within a borehole that traverses a subterranean formation including positioning first wellbore casing, second wellbore casing and additional wellbore casings within the borehole that overlaps one with the other and that are coupled to one another at a joint between each successive wellbore casing. In the method with additional wellbore casings would further includes additional tubular sleeves positioned to overlap each successive joint of the successive wellbore casings and causing each sleeve to collapse inwardly onto the respective end portions of the first, second, and additional wellbore casings to sealingly engage the exterior surfaces of the respective end portions. The method further includes the use of magnetic impulse energy to collapse the tubular sleeves onto the surfaces of the wellbore casings at the joints thereof, thereby facilitating sealing of the joints.
It is understood that variations may be made in the foregoing without departing from the scope of the invention. For example, the teachings of the present illustrative embodiments may be used to provide a wellbore casing, a pipeline, or a structural support. Furthermore, the elements and teachings of the various illustrative embodiments may be combined in whole or in part in some or all of the illustrative embodiments.
Although illustrative embodiments of the invention have been shown and described, a wide range of modification, changes and substitution is contemplated in the foregoing disclosure. In some instances, some features of the present invention may be employed without a corresponding use of the other features. Accordingly, it is appropriate that the appended claims be construed broadly and in a manner consistent with the scope of the invention.
The present application is the National Stage patent application for PCT patent application Ser. No. PCT/US2003/025676, attorney docket number 25791.120.02, filed on Aug. 18, 2003, which claimed the benefit of the filing dates of (1) U.S. provisional patent application Ser. No. 60/405,394, attorney docket no 25791.120, filed on Aug. 23, 2002, the disclosure of which is incorporated herein by reference. The present application is a continuation-in-part of U.S. utility patent application Ser. No. ______, attorney docket number 25791.119.______, filed on ______, which was a continuation-in-part of U.S. utility patent application Ser. No. ______, attorney docket number 25791.106.05, filed on Jan. 19, 2005, which was a continuation-in-part of U.S. utility patent application Ser. No. 10/511,410, attorney docket number 25791.101.05, filed on Oct. 14, 2004 which claimed the benefit of the filing date of U.S. provisional patent application Ser. No. 60/372,632, attorney docket number 25791.101, filed on Apr. 15, 2002, which was a continuation-in-part of U.S. utility patent application Ser. No. 10/510,966, attorney docket number 25791.93.05, filed on Oct. 12, 2004, which claimed the benefit of the filing date of U.S. provisional patent application Ser. No. 60/372,048, attorney docket number 25791.93, filed on Apr. 12, 2002, which was a continuation-in-part of U.S. utility patent application Ser. No. 10/500,745, attorney docket number 25791.92.05, filed on Jul. 6, 2004, which claimed the benefit of the filing date of U.S. provisional patent application Ser. No. 10/500,745, attorney docket number 25791.92, filed on Dec. 10, 2002. The present application is related to the following: (1) U.S. patent application Ser. No. 09/454,139, attorney docket no. 25791.03.02, filed on Dec. 3, 1999, (2) U.S. patent application Ser. No. 09/510,913, attorney docket no. 25791.7.02, filed on Feb. 10, 2000, (3) U.S. patent application Ser. No. 09/502,350, attorney docket no. 25791.8.02, filed on Feb. 10, 2000, (4) U.S. Pat. No. 6,328,113, (5) U.S. patent application Ser. No. 09/523,460, attorney docket no. 25791.11.02, filed on Mar. 10, 2000, (6) U.S. patent application Ser. No. 09/512,895, attorney docket no. 25791.12.02, filed on Feb. 24, 2000, (7) U.S. patent application Ser. No. 09/511,941, attorney docket no. 25791.16.02, filed own Feb. 24, 2000, (8) U.S. patent application Ser. No. 09/588,946, attorney docket no. 25791.17.02, filed on Jun. 7, 2000, (9) U.S. patent application Ser. No. 09/559,122, attorney docket no. 25791.23.02, filed on Apr. 26, 2000, (10) PCT patent application Ser. No. PCT/US00/18635, attorney docket no. 25791.25.02, filed on Jul. 9, 2000, (11) U.S. provisional patent application Ser. No. 60/162,671, attorney docket no. 25791.27, filed on Nov. 1, 1999, (12) U.S. provisional patent application Ser. No. 60/154,047, attorney docket no. 25791.29, filed on Sep. 16, 1999, (13) U.S. provisional patent application Ser. No. 60/159,082, attorney docket no. 25791.34, filed on Oct. 12, 1999, (14) U.S. provisional patent application Ser. No. 60/159,039, attorney docket no. 25791.36, filed on Oct. 12, 1999, (15) U.S. provisional patent application Ser. No. 60/159,033, attorney docket no. 25791.37, filed on Oct. 12, 1999, (16) U.S. provisional patent application Ser. No. 60/212,359, attorney docket no. 25791.38, filed on Jun. 19, 2000, (17) U.S. provisional patent application Ser. No. 60/165,228, attorney docket no. 25791.39, filed on Nov. 12, 1999, (18) U.S. provisional patent application Ser. No. 60/221,443, attorney docket no. 25791.45, filed on Jul. 28, 2000, (19) U.S. provisional patent application Ser. No. 60/221,645, attorney docket no. 25791.46, filed on Jul. 28, 2000, (20) U.S. provisional patent application Ser. No. 60/233,638, attorney docket no. 25791.47, filed on Sep. 18, 2000, (21) U.S. provisional patent application Ser. No. 60/237,334, attorney docket no. 25791.48, filed on Oct. 2, 2000, (22) U.S. provisional patent application Ser. No. 60/270,007, attorney docket no. 25791.50, filed on Feb. 20, 2001, (23) U.S. provisional patent application Ser. No. 60/262,434, attorney docket no. 25791.51, filed on Jan. 17, 2001, (24) U.S. provisional patent application Ser. No. 60/259,486, attorney docket no. 25791.52, filed on Jan. 3, 2001, (25) U.S. provisional patent application Ser. No. 60/303,740, attorney docket no. 25791.61, filed on Jul. 6, 2001, (26) U.S. provisional patent application Ser. No. 60/313,453, attorney docket no. 25791.59, filed on Aug. 20, 2001, (27) U.S. provisional patent application Ser. No. 60/317,985, attorney docket no. 25791.67, filed on Sep. 6, 2001, (28) U.S. provisional patent application Ser. No. 60/3318,386, attorney docket no. 25791.67.02, filed on Sep. 10, 2001, (29) U.S. utility patent application Ser. No. 09/969,922, attorney docket no. 25791.69, filed on Oct. 3, 2001, (30) U.S. utility patent application Ser. No. 10/016,467, attorney docket no. 25791.70, filed on Dec. 10, 2001; (31) U.S. provisional patent application Ser. No. 60/343,674, attorney docket no. 25791.68, filed on Dec. 27, 2001; (32) U.S. provisional patent application Ser. No. 60/346,309, attorney docket no 25791.92, filed on Jan. 7, 2002; (33) U.S. provisional patent application Ser. No. 60/372,048, attorney docket no. 25791.93, filed on Apr. 12, 2002; (34) U.S. provisional patent application Ser. No. 60/380,147, attorney docket no. 25791.104, filed on May, 6, 2002; (35) U.S. provisional patent application Ser. No. 60/387,486, attorney docket no. 25791.107, filed on Jun. 10, 2002; (36) U.S. provisional patent application Ser. No. 60/387,961, attorney docket no. 25791.108, filed on Jun. 12, 2002; (37) U.S. provisional patent application Ser. No. 60/391,703, attorney docket no. 25791.90, filed on Jun. 26, 2002; and (38) U.S. provisional patent application Ser. No. 60/397,284, attorney docket no. 25791.106, filed on Jul. 19, 2002, (39) U.S. provisional patent application Ser. No. 60/398,061, attorney docket no. 25791.110, filed on Jul. 24, 2002, and (40) U.S. provisional patent application no. 60/339,240, attorney docket no. 25791.111, filed on Jul. 29, 2002, and (41) U.S. provisional patent application No. 60/405,610, attorney docket no. 25791.119, filed on even date herewith, the disclosures of which are incorporated herein by reference.
Filing Document | Filing Date | Country | Kind | 371c Date |
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PCT/US03/02576 | 1/30/2003 | WO | 2/23/2005 |
Number | Date | Country | |
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60405394 | Aug 2002 | US |