Source: http://www.google.com/patents/US7100684?dq=6322901
Timestamp: 2015-06-03 15:07:51
Document Index: 186455857

Matched Legal Cases: ['application No. 60', 'application No. 60', 'application No. 60', 'application No. 60', 'application No. 60', 'application No. 11', 'application No. 60', 'application No. 60', 'application No. 60']

Patent US7100684 - Liner hanger with standoffs - Google PatentsSearch Images Maps Play YouTube News Gmail Drive More »Sign inAdvanced Patent SearchPatentsAn apparatus and method for forming or repairing a wellbore casing by radially expanding a tubular liner having standoffs....http://www.google.com/patents/US7100684?utm_source=gb-gplus-sharePatent US7100684 - Liner hanger with standoffsAdvanced Patent SearchPublication numberUS7100684 B2Publication typeGrantApplication numberUS 10/322,947Publication dateSep 5, 2006Filing dateDec 18, 2002Priority dateJul 28, 2000Fee statusPaidAlso published asUS20030116325Publication number10322947, 322947, US 7100684 B2, US 7100684B2, US-B2-7100684, US7100684 B2, US7100684B2InventorsRobert Lance Cook, Lev RingOriginal AssigneeEnventure Global TechnologyExport CitationBiBTeX, EndNote, RefManPatent Citations (99), Non-Patent Citations (99), Referenced by (11), Classifications (8), Legal Events (3) External Links: USPTO, USPTO Assignment, EspacenetLiner hanger with standoffs
US 7100684 B2Abstract
An apparatus and method for forming or repairing a wellbore casing by radially expanding a tubular liner having standoffs.
1. In a wellbore that traverses a subterranean formation and includes a cased section having a wellbore casing and an uncased section that traverses a porous subterranean zone, wherein the operating pressure of the wellbore is greater than the operating pressure of the porous subterranean zone, a method of coupling a tubular liner to the wellbore casing of the cased section of the wellbore, comprising:
positioning a solid tubular liner and an expansion cone within the wellbore with the solid tubular liner overlapping the wellbore casing;
during the positioning of the solid tubular liner within the wellbore, preventing the portion of the solid tubular liner that does not overlap with the wellbore casing from contacting the porous subterranean zone of the uncased section of the wellbore;
radially expanding the solid tubular liner by injecting a fluidic material into the tubular liner to pressurize the interior of the solid tubular liner and displace the expansion cone relative to the solid tubular liner; and
preventing the portion of the solid tubular liner that does not overlap with the wellbore casing from contacting the porous subterranean zone of the uncased section of the wellbore during the radial expansion of the portion of the solid tubular liner that does not overlap with the wellbore casing.
during the positioning of the solid tubular liner within the wellbore, preventing the portion of the solid tubular liner that does not overlap with the wellbore casing from adhering to the porous subterranean zone of the uncased section of the wellbore;
preventing the portion of the solid tubular liner that does not overlap with the wellbore casing from adhering to the porous subterranean zone of the uncased section of the wellbore during the radial expansion of the portion of the solid tubular liner that does not overlap with the wellbore casing.
3. In a wellbore that traverses a subterranean formation, the wellbore including a cased section having a wellbore casing and an uncased section that traverses a porous subterranean zone, wherein the operating pressure of the wellbore is greater than the operating pressure of the porous subterranean zone, a method of coupling a tubular liner to the wellbore casing of the cased section of the wellbore, comprising:
during the positioning of the portion of the solid tubular liner that does not overlap with the wellbore casing within the wellbore proximate the porous subterranean zone, maintaining the longitudinal center line of the expansion cone in a position that is substantially coincident with the longitudinal center line of the portion of the solid tubular liner that does not overlap with the wellbore casing;
maintaining the longitudinal center line of the expansion cone in a position that is substantially coincident with the longitudinal center line of the portion of the solid tubular liner that does not overlap with the wellbore casing during the radial expansion of the portion of the solid tubular liner that does not overlap with the wellbore casing proximate the porous subterranean zone.
4. In a wellbore that traverses a subterranean formation, the wellbore including a cased section having a wellbore casing and an uncased section that traverses a porous subterranean zone, wherein the operating pressure of the wellbore is greater than the operating pressure of the porous subterranean zone, a method of coupling a tubular liner to the wellbore casing of the cased section of the wellbore, comprising:
positioning a solid tubular liner and an expansion cone within the wellbore;
overlapping a portion of the solid tubular liner with the wellbore casing;
during the radial expansion of the portion of the solid tubular liner that does not overlap with the wellbore casing, applying substantially equal stresses to the interior surface of the portion of the solid tubular liner that does not overlap with the wellbore casing using the expansion cone proximate the porous subterranean zone.
5. In a wellbore that traverses a subterranean formation and includes a cased section having a wellbore casing and an uncased section that traverses a porous subterranean zone, wherein the operating pressure of the wellbore is greater than the operating pressure of the porous subterranean zone, a system for coupling a tubular liner to the wellbore casing of the cased section of the wellbore, comprising:
means for positioning a solid tubular liner and an expansion cone within the wellbore with the solid tubular liner overlapping the wellbore casing;
means for during the positioning of the solid tubular liner within the wellbore, preventing the portion of the solid tubular liner that does not overlap with the wellbore casing from contacting the porous subterranean zone of the uncased section of the wellbore;
means for radially expanding the solid tubular liner by injecting a fluidic material into the tubular liner to pressurize the interior of the solid tubular liner and displace the expansion cone relative to the solid tubular liner; and
means for preventing the portion of the solid tubular liner that does not overlap with the wellbore casing from contacting the porous subterranean zone of the uncased section of the wellbore during the radial expansion of the portion of the solid tubular liner that does not overlap with the wellbore casing.
means for during the positioning of the solid tubular liner within the wellbore, preventing the portion of the solid tubular liner that does not overlap with the wellbore casing from adhering to the porous subterranean zone of the uncased section of the wellbore; and
means for preventing the portion of the solid tubular liner that does not overlap with the wellbore casing from adhering to the porous subterranean zone of the uncased section of the wellbore during the radial expansion of the portion of the solid tubular liner that does not overlap with the wellbore casing.
7. In a wellbore that traverses a subterranean formation, the wellbore including a cased section having a wellbore casing and an uncased section that traverses a porous subterranean zone, wherein the operating pressure of the wellbore is greater than the operating pressure of the porous subterranean zone, a system for coupling a tubular liner to the wellbore casing of the cased section of the wellbore, comprising:
means for during the positioning of the portion of the solid tubular liner that does not overlap with the wellbore casing within the wellbore, maintaining the longitudinal center line of the expansion cone in a position that is substantially coincident with the longitudinal center line of the portion of the solid tubular liner that does not overlap with the wellbore casing;
means for maintaining the longitudinal center line of the expansion cone in a position that is substantially coincident with the longitudinal center line of the portion of the solid tubular liner that does not overlap with the wellbore casing during the radial expansion of the portion of the solid tubular liner that does not overlap with the wellbore casing.
8. An apparatus for coupling a tubular liner to a wellbore casing within a wellbore that traverses a porous subterranean formation, wherein the operating pressure of the wellbore is greater than the operating pressure of the porous subterranean zone, comprising:
a tubular support member defining a first internal passage;
an expansion cone coupled to the tubular support member defining a second internal passage fluidicly coupled to the first internal passage;
a tubular expansion cone launcher movably coupled to and mating with the expansion cone;
a solid tubular liner coupled to an end of the tubular expansion cone launcher; and
a shoe coupled to another end of the tubular expansion cone launcher including a valveable passage;
means for during a positioning of the solid tubular liner within the wellbore, preventing a portion of the solid tubular liner that does not overlap with the wellbore casing from contacting the porous subterranean zone of the wellbore; and
means for preventing the portion of the solid tubular liner that does not overlap with the wellbore casing from contacting the porous subterranean zone of the wellbore during a radial expansion of the portion of the solid tubular liner that does not overlap with the wellbore casing.
means for during the positioning of the solid tubular liner within the wellbore, preventing the portion of the solid tubular liner that does not overlap with the wellbore casing from adhering to the porous subterranean zone of the wellbore; and
means for preventing the portion of the solid tubular liner that does not overlap with the wellbore casing from adhering to the porous subterranean zone of the wellbore during the radial expansion of the portion of the solid tubular liner that does not overlap with the wellbore casing.
10. An apparatus for coupling a tubular liner to a wellbore casing within a wellbore that traverses a porous subterranean formation, wherein the operating pressure of the wellbore is greater than the operating pressure of the porous subterranean zone, comprising:
a tubular liner coupled to an end of the tubular expansion cone launcher;
means for during a positioning of a portion of the solid tubular liner that does not overlap with the wellbore casing within the wellbore, maintaining a longitudinal center line of the expansion cone in a position that is substantially coincident with a longitudinal center line of the portion of the solid tubular liner that does not overlap with the wellbore casing;
means for maintaining the longitudinal center line of the expansion cone in position that is substantially coincident with the longitudinal center line of the solid tubular liner during a longitudinal displacement of the expansion cone relative to the tubular liner.
11. An apparatus for coupling a tubular liner to a wellbore casing within a wellbore that traverses a porous subterranean formation, wherein the operating pressure of the wellbore is greater than the operating pressure of the porous subterranean zone, comprising:
a tubular liner coupled to an end of the tubular expansion cone launcher; and
a shoe coupled to another end of the tubular expansion cone launcher including a valveable passage; and
means for during a radial expansion of a portion of the solid tubular liner that does not overlap with the wellbore casing, applying substantially equal stresses to the interior surface of the portion of the solid tubular liner that does not overlap with the wellbore casing using the expansion cone.
12. In a wellbore that traverses a subterranean formation and includes a cased section having a wellbore casing and an uncased section that traverses a porous subterranean zone, wherein the operating pressure of the wellbore is greater than the operating pressure of the porous subterranean zone, a method of coupling a tubular liner to the wellbore casing of the cased section of the wellbore, comprising:
positioning a solid tubular liner and an expansion cone within the wellbore with the solid tubular liner overlapping the wellbore casing, wherein the solid tubular liner includes a resilient helical standoff coupled to the exterior surface of the solid tubular liner;
during the positioning of the solid tubular liner within the wellbore, the resilient helical standoff preventing the portion of the solid tubular liner that does not overlap with the wellbore casing from contacting the porous subterranean zone of the uncased section of the wellbore;
radially expanding the solid tubular liner by injecting a fluidic material into the tubular liner to pressurize the interior of the solid tubular liner and displace the expansion cone relative to the solid tubular liner;
and the resilient helical standoff preventing the portion of the solid tubular liner that does not overlap with the wellbore casing from contacting the porous subterranean zone of the uncased section of the wellbore during the radial expansion of the portion of the solid tubular liner that does not overlap with the wellbore casing.
13. In a wellbore that traverses a subterranean formation and includes a cased section having a wellbore casing and an uncased section that traverses a porous subterranean zone, wherein the operating pressure of the wellbore is greater than the operating pressure of the porous subterranean zone, a method of coupling a tubular liner to the wellbore casing of the cased section of the wellbore, comprising:
positioning a solid tubular liner and an expansion cone within the wellbore with the solid tubular liner overlapping the wellbore casing, wherein the solid tubular liner includes a plurality of spaced apart resilient standoffs coupled to the exterior surface of the solid tubular liner between the opposite ends of the solid tubular liner;
during the positioning of the solid tubular liner within the wellbore, the resilient standoffs preventing the portion of the solid tubular liner that does not overlap with the wellbore casing from contacting the porous subterranean zone of the uncased section of the wellbore;
the resilient standoffs preventing the portion of the solid tubular liner that does not overlap with the wellbore casing from contacting the porous subterranean zone of the uncased section of the wellbore during the radial expansion of the portion of the solid tubular liner that does not overlap with the wellbore casing.
14. In a wellbore that traverses a subterranean formation, the wellbore including a cased section having a wellbore casing and an uncased section, a method of coupling a tubular liner to the wellbore casing of the cased section of the wellbore, comprising:
determining that the uncased section traverses a porous subterranean zone;
determining that the operating pressure of the wellbore is greater than the operating pressure of the porous subterranean zone;
15. In a wellbore that traverses a subterranean formation, the wellbore including a cased section having a wellbore casing and an uncased section, a method of coupling a tubular liner to the wellbore casing of the cased section of the wellbore, comprising:
if the uncased section is determined to traverse a porous subterranean zone having an operating pressure that is less than the operating pressure of the wellbore, then adding a passive structural means to the solid tubular liner;
during the positioning of the solid tubular liner within the wellbore, the passive structural means preventing the portion of the solid tubular liner that does not overlap with the wellbore casing from contacting the porous subterranean zone of the uncased section of the wellbore;
the passive structural means preventing the portion of the solid tubular liner that does not overlap with the wellbore casing from contacting the porous subterranean zone of the uncased section of the wellbore during the radial expansion of the portion of the solid tubular liner that does not overlap with the wellbore casing.
16. In a wellbore that traverses a subterranean formation and includes a cased section having a wellbore casing and an uncased section that traverses a porous subterranean zone, wherein the operating pressure of the wellbore is greater than the operating pressure of the porous subterranean zone, a system for coupling a tubular liner to the wellbore casing of the cased section of the wellbore, comprising:
means external to the solid tubular liner for during the positioning of the solid tubular liner within the wellbore, preventing the portion of the solid tubular liner that does not overlap with the wellbore casing from contacting the porous subterranean zone of the uncased section of the wellbore;
means external to the solid tubular liner for preventing the portion of the solid tubular liner that does not overlap with the wellbore casing from contacting the porous subterranean zone of the uncased section of the wellbore during the radial expansion of the portion of the solid tubular liner that does not overlap with the wellbore casing.
17. In a wellbore that traverses a subterranean formation, the wellbore including a cased section having a wellbore casing and an uncased section that traverses a porous subterranean zone, wherein the operating pressure of the wellbore is greater than the operating pressure of the porous subterranean zone, a system for coupling a tubular liner to the wellbore casing of the cased section of the wellbore, comprising:
means distributed along the external surface of the solid tubular liner for during the positioning of the portion of the solid tubular liner that does not overlap with the wellbore casing within the wellbore, maintaining the longitudinal center line of the expansion cone in a position that is substantially coincident with the longitudinal center line of the portion of the solid tubular liner that does not overlap with the wellbore casing;
means distributed along the external surface of the solid tubular liner for maintaining the longitudinal center line of the expansion cone in a position that is substantially coincident with the longitudinal center line of the portion of the solid tubular liner that does not overlap with the wellbore casing during the radial expansion of the portion of the solid tubular liner that does not overlap with the wellbore casing.
18. An apparatus for coupling a tubular liner to a wellbore casing within a wellbore that traverses a porous subterranean formation, wherein the operating pressure of the wellbore is greater than the operating pressure of the porous subterranean zone, comprising:
means external to the solid tubular liner for during a positioning of the solid tubular liner within the wellbore, preventing a portion of the solid tubular liner that does not overlap with the wellbore casing from contacting the porous subterranean zone of the wellbore; and
means distributed along the external surface of the solid tubular liner for preventing the portion of the solid tubular liner that does not overlap with the wellbore casing from contacting the porous subterranean zone of the wellbore during a radial expansion of the portion of the solid tubular liner that does not overlap with the wellbore casing.
19. An apparatus for coupling a tubular liner to a wellbore casing within a wellbore that traverses a porous subterranean formation, wherein the operating pressure of the wellbore is greater than the operating pressure of the porous subterranean zone, comprising:
means distributed along the external surface of the solid tubular liner for during a positioning of a portion of the solid tubular liner that does not overlap with the wellbore casing within the wellbore, maintaining a longitudinal center line of the expansion cone in a position that is substantially coincident with a longitudinal center line of the portion of the solid tubular liner that does not overlap with the wellbore casing; and
means distributed along the external surface of the solid tubular liner for maintaining the longitudinal center line of the expansion cone in a position that is substantially coincident with the longitudinal center line of the solid tubular liner during a longitudinal displacement of the expansion cone relative to the tubular liner.
20. An apparatus for coupling a tubular liner to a wellbore casing within a wellbore that traverses a porous subterranean formation, wherein the operating pressure of the wellbore is greater than the operating pressure of the porous subterranean zone, comprising:
means distributed along the external surface of the solid tubular liner for during a radial expansion of a portion of the solid tubular liner that does not overlap with the wellbore casing, applying substantially equal stresses to the interior surface of the portion of the solid tubular liner that does not overlap with the wellbore casing using the expansion cone.
This application is a continuation of International Application No. PCT/US01/23815 filed Jul. 27, 2001, based on U.S. provisional patent application Ser. No. 60/221,645, filed on Jul. 28, 2000, the disclosure of which is incorporated herein by reference.
This application is related to the following applications: (1) U.S. Pat. No. 6,328,113, which was filed as U.S. patent application Ser. No. 09/440,338, filed on Nov. 15, 1999, which claimed benefit of the filing date of U.S. provisional patent application Ser. No. 60/108,558, filed on Nov. 16, 1998, (2) U.S. Pat. No. 6,497,289 which was filed as U.S. patent application Ser. No. 09/454,139, filed on Dec. 3, 1999, which claimed benefit of the filing date of U.S. provisional patent application Ser. No. 60/111,293, filed on Dec. 7, 1998, (3) U.S. patent application Ser. No. 09/502,350, filed on Feb. 10, 2000, which claimed the benefit of the filing date of U.S. provisional patent application Ser. No. 60/119,611, filed on Feb. 11, 1999, (4) U.S. patent application Ser. No. 09/510,913, filed on Feb. 23, 2000, which claimed the benefit of the filing date of U.S. provisional patent application Ser. No. 60/121,702, filed on Feb. 25, 1999, (5) U.S. Pat. No. 6,575,240, which was filed as U.S. patent application Ser. No. 09/511,941, filed on Feb. 24, 2000, which claimed the benefit of the filing date of U.S. provisional patent application Ser. No. 60/121,907, filed on Feb. 26, 1999, (6) U.S. Pat. No. 6,640,903, which was filed as U.S. patent application Ser. No. 09/523,460, filed on Mar. 10, 2000, which claimed the benefit of the filing date of U.S. provisional patent application Ser. No. 60/124,042, filed on Mar. 11, 1999, (7) U.S. Pat. No. 6,604,763, which was filed as U.S. patent application Ser. No. 09/559,122, filed on Apr. 26, 2000, which claimed the benefit of the filing date of U.S. provisional patent application Ser. No. 60/131,106, filed on Apr. 26, 1999, (8) U.S. Pat. No. 6,557,640, which was filed as U.S. patent application Ser. No. 09/588,946, filed on Jun. 7, 2000, which claimed the benefit of the filing date of U.S. provisional patent application Ser. No. 60/137,998, filed on Jun. 7, 1999, (9) U.S. provisional patent application Ser. No. 60/143,039, filed on Jul. 9, 1999, (10) U.S. patent application Ser. No. 10/030,593, filed on Jan. 8, 2002, which claims priority from U.S. provisional patent application Ser. No. 60/146,203, filed on Jul. 29, 1999, the disclosures of which are incorporated by reference; (11) U.S. patent application Ser. No. 10/169,434, filed on Jul. 1, 2002, which claims priority from U.S. provisional patent application Ser. No. 60/183,546, filed on Feb. 18, 2000; (12) U.S. Pat. No. 60,568,471, which was filed as U.S. patent application Ser. No. 09/512,895, filed on Feb. 24, 2000, which claimed the benefit of the filing date of U.S. provisional patent application Ser. No. 60/121,841, filed on Feb. 26, 1999; (13) U.S. patent application Ser. No. 10/303,992, filed on Nov. 22, 2002, which claims priority from U.S. provisional patent application Ser. No. 60/212,359, filed on Jun. 19, 2000; (14) U.S. patent application Ser. No. 10/111,982, filed on Apr. 30, 2002, which claims priority from U.S. provisional patent application Ser. No. 60/162,671, filed on Nov. 1, 1999; (15) U.S. patent application Ser. No. 10/089,419, filed on Mar. 27, 2002, which claims priority from U.S. provisional patent application Ser. No. 60/159,039, filed on Oct. 12, 1999; (16) U.S. patent application Ser. No. 09/679,906, filed on Oct. 5, 2000, which claims priority from U.S. provisional patent application Ser. No. 60/159,033, filed on Oct. 12, 1999, (17) U.S. provisional patent application Ser. No. 60/165,228, filed on Nov. 12, 1999; and (18) U.S. patent application Ser. No. 10/311,412, filed on Dec. 12, 2002, which claims priority from U.S. provisional patent application No. 60/221,443, filed on Jul. 28, 2000, the disclosures of which are incorporated herein by reference.
This application is related to the following applications: (1) U.S. Pat. No. 6,497,289, which was filed as U.S. patent application Ser. No. 09/454,139, filed on Dec. 3, 1999, which claims priority from provisional application 60/111,293, filed on Dec. 7, 1998, (2) U.S. patent application Ser. No. 09/510,913, filed on Feb. 23, 2000, which claims priority from provisional application 60/121,702, filed on Feb. 25, 2000, (3) U.S. patent application Ser. No. 09/502,350, filed on Feb. 2, 10, 2000, which claims priority from provisional application 60/119,611, filed on Feb. 11, 1999, (4) U.S. Pat. No. 6,328,113, which was filed as U.S. patent application Ser. No. 09/440,338, filed on Nov. 15, 1999, which claims priority from provisional application 60/108,558, filed on Nov. 16, 1998, (5) U.S. patent application Ser. No. 10/169,434, filed on Jul. 1, 2002, which claims priority from provisional application 60/183,546, filed on Feb. 18, 200, (6) U.S. Pat. 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According to one aspect of the present invention, a method of forming a casing in a wellbore having a cased section and an open hole section is provided that includes positioning a tubular liner within the wellbore, overlapping the tubular liner and the cased section, centering the tubular liner within the wellbore, and radially expanding the tubular liner into contact with the cased section.
According to another aspect of the present invention, a radially expandable tubular member for repairing an opening in a wellbore casing is provided that includes a tubular member, and one or more standoffs coupled to the exterior surface of the tubular member.
According to another aspect of the present invention, an apparatus for repairing an opening in a wellbore casing is provided that includes a tubular support member including a first passage, an expansion cone coupled to the tubular support member including a second passage fluidicly coupled to the first passage, an expansion cone launcher coupled to the expansion cone including a shoe having an exhaust passage, and an expandable tubular member coupled to the expansion cone launcher including one or more standoffs.
According to another aspect of the present invention, an apparatus is provided that includes a wellbore including a preexisting casing and an open hole section, and a radially expanded tubular member coupled to the preexisting casing including one or more standoffs.
FIG. 1 is a cross-sectional view illustrating a wellbore including a wellbore casing and an open hole section that traverses a porous subterranean layer.
FIG. 2 is a fragmentary cross-sectional view illustrating the introduction of an apparatus for casing the open hole section of the wellbore of FIG. 1.
FIG. 3 is a fragmentary cross-sectional view illustrating the injection of a fluidic material into the apparatus of FIG. 2.
FIG. 4 is a fragmentary cross-sectional view illustrating the placement of a plug into the exhaust passage of the shoe of the apparatus of FIG. 3.
FIG. 5 is a fragmentary cross-sectional view illustrating the pressurization of the interior portion of the apparatus below the expansion cone of FIG. 4.
FIG. 6 is a fragmentary cross-sectional view illustrating the completion of the radial expansion of the tubular member of the apparatus of FIG. 5.
FIG. 7 is a fragmentary cross-sectional view illustrating the removal of the shoe from the apparatus of FIG. 6.
An apparatus and method for casing an open hole section of a wellbore within a subterranean formation is provided. The apparatus and method provides a system for casing an open hole section of a wellbore within a subterranean formation in which a tubular member having a plurality of radially oriented standoffs is radially expanded into contact with the preexisting wellbore casing and the open hole section. The standoffs provided on the exterior surface of the tubular member preferably position the tubular member away from the interior walls of the open hole section during the radial expansion process. In this manner, the tubular member does not adhere to underpressurized sections of the open hole section of the wellbore. In this manner, the process of radial expansion is more reliable.
Referring initially to FIG. 1, a wellbore 100 positioned within a subterranean formation 105 includes a preexisting casing 110 and an open hole section 115 that traverses an porous region 120. When the operating pressure within the wellbore PBORE is greater than the operating pressure within the porous region PPORE, fluidic materials will flow from the wellbore 100 into the porous region 120. As a result of the flow of fluidic materials from the wellbore 100 into the porous region 120, downhole equipment will tend to adhere to, or at least be drawn toward, the interior surface of the wellbore 100 in the vicinity of the porous region 120. This can have serious and adverse consequences when radially expanding a tubular member in such an operating environment.
Referring to FIG. 2, an apparatus 200 for forming a wellbore casing in the open hole section of the wellbore 100 may then be positioned within the wellbore in an overlapping relationship with the lower portion of the preexisting wellbore casing 110.
The apparatus 200 includes a tubular support member 205 having a longitudinal passage 210 and a transverse passage 215 that is coupled to an expansion cone 220 having a longitudinal passage 225 that is fluidicly coupled to the longitudinal passage 210. The expansion cone 220 is at least partially received within an expansion cone launcher 230 that includes a thin-walled annular member 235 and a shoe 240 having an exhaust passage 245. An expandable tubular member 250 extends from the expansion cone launcher 230 that includes a sealing member 255 and a plurality of standoffs 260 a–260 h affixed to the exterior surface of the expandable tubular member. In a preferred embodiment, the standoffs 260 are fabricated from a resilient material. A sealing cup 265 is attached to the exterior surface of the tubular support member 205 for preventing foreign materials from entering the interior of the expandable tubular member 250.
In a preferred embodiment, the apparatus 200 is provided as disclosed in one or more of the following: (1) U.S. patent application Ser. No. 09/440,338, filed on Nov. 15, 1999, which claimed benefit of the filing date of U.S. provisional patent application Ser. No. 60/108,558, filed on Nov. 16, 1998, (2) U.S. patent application Ser. No. 09/454,139, filed on Dec. 3, 1999, which claimed benefit of the filing date of U.S. provisional patent application Ser. No. 60/111,293, filed on Dec. 7, 1998, (3) U.S. patent application Ser. No. 09/502,350, filed on Feb. 10, 2000, which claimed the benefit of the filing date of U.S. provisional patent application Ser. No. 60/119,611, filed on Feb. 11, 1999, (4) U.S. patent application Ser. No. 09/510,913, filed on Feb. 23, 2000, which claimed the benefit of the filing date of U.S. provisional patent application Ser. No. 60/121,702, filed on Feb. 25, 1999, (5) U.S. patent application Ser. No. 09/511,941, filed on Feb. 24, 2000, which claimed the benefit of the filing date of U.S. provisional patent application No. 60/121,907, filed on Feb. 26, 1999, (6) U.S. patent application Ser. No. 09/523,460, filed on Mar. 10, 2000, which claimed the benefit of the filing date of U.S. provisional patent application Ser. No. 60/124,042, filed on Mar. 11, 1999, (7) U.S. patent application Ser. No. 09/559,122, filed on Apr. 26, 2000, which claimed the benefit of the filing date of U.S. provisional patent application Ser. No. 60/131,106, filed on Apr. 26, 1999, (8) U.S. patent application Ser. No. 09/588,946, filed on Jun. 7, 2000, which claimed the benefit of the filing date of U.S. provisional patent application Ser. No. 60/137,998, filed on Jun. 7, 1999, (9) U.S. provisional patent application Ser. No. 60/143,039, filed on Jul. 9, 1999, (10) U.S. provisional patent application Ser. No. 60/146,203, filed on Jul. 29, 1999, the disclosures of which are incorporated by reference; (11) U.S. provisional patent application Ser. No. 60/183,546, filed on Feb. 18, 2000; (12) U.S. patent application Ser. No. 09/512,895, filed on Feb. 24, 2000, which claimed the benefit of the filing date of U.S. provisional patent application Ser. No. 60/121,841, filed on Feb. 26, 1999; (13) U.S. provisional patent application Ser. No. 60/212,359, filed on Jun. 19, 2000; (14) U.S. provisional patent application Ser. No. 60/162,671, filed on Nov. 1, 1999; (15) U.S. provisional patent application Ser. No. 60/159,039, filed on Oct. 12, 1999; (16) U.S. provisional patent application Ser. No. 60/159,033, filed on Oct. 12, 1999; and (17) U.S. provisional patent application Ser. No. 60/165,228, filed on Nov. 12, 1999, the disclosures of which are incorporated herein by reference.
As illustrated in FIG. 2, during placement of the apparatus 200 within the wellbore 100, fluidic materials displaced by the apparatus 200 are conveyed through the longitudinal passages 210 and 225 to the transverse passage 215. In this manner, surge pressures during the placement of the apparatus 200 within the wellbore 100 are minimized. Furthermore, as illustrated in FIG. 2, the apparatus 200 is preferably initially positioned with upper portion of the tubular member 250 in opposing relation to the lower portion of the preexisting wellbore casing 110. In this manner, the upper portion of the tubular member 250 may be radially expanded into contact with the lower portion of the preexisting wellbore casing 110. In a preferred embodiment, during the placement of the apparatus 200 within the wellbore 100, the standoffs 260 a–260 h prevent the apparatus 200 from adhering to, or being drawn toward, the interior surface of the wellbore 100 in the vicinity of the porous region 120. In this manner, the apparatus 200 is approximately centered within the wellbore 100.
As illustrated in FIG. 3, the transverse passage 215 may then be closed and fluidic materials injected into the apparatus 200 through the longitudinal passage 210. In this manner, any blockages within any of the passages 210, 225, and 245 may be detected by monitoring the operating pressure whereby an increase in operating pressure above nominal, or predetermined, conditions may indicate a blockage of one of the passages.
As illustrated in FIG. 4, a plug 270 or other conventional stop member may then be introduced into the fluidic materials injected into the apparatus 200 through the passage 210, and the plug 270 may be positioned within the exhaust passage 245. In this manner, the exhaust passage 245 may be sealed off. Thus, continued injection of fluidic materials into the apparatus 200 through the passage 210 may thereby pressurize a region 275 below the expansion cone 220.
As illustrated in FIGS. 5 and 6, continued pressurization of the region 275 causes the expansion cone 220 to radially expand the expandable tubular member 250 off of the expansion cone. In this manner, the upper portion of the radially expanded tubular member 250 is coupled to the lower portion of the preexisting wellbore casing 110. In a preferred embodiment, during the radial expansion process, the tubular support member 205 is raised out of the wellbore 100.
In a preferred embodiment, throughout the radial expansion process, the standoffs 260 a–260 h prevent the exterior surface of the apparatus 200 from adhering to, or being drawn toward, the interior surface of the wellbore 100 in the vicinity of the porous region 120. In this manner, the apparatus 200 is preferably substantially centered within the wellbore 100. Furthermore, in this manner, the longitudinal center axis of the expansion cone 220 is preferably maintained in a position that is substantially coincident with the longitudinal center axis of the tubular member 250. In addition, in this manner, the stresses applied to the interior surface of the tubular member 250 by the axial displacement of the expansion cone 220 are substantially even. Finally, in this manner, overstressing of the tubular member 250 is prevented thereby eliminating catastrophic failure of the tubular member 250.
As illustrated in FIG. 7, the shoe 240 may then be removed using a conventional milling device. In a preferred embodiment, upon radially expanding the expandable tubular member 250, the standoffs 260 a–260 h seal and isolate intervals within the open hole section 115. In several alternative embodiments, the standoffs 260 may be provided, for example, by annular members spaced along the length of the expandable tubular member 250 and/or a continuous member that is wrapped around the expandable tubular member 250 in helical fashion.
It is understood that variations may be made in the foregoing without departing from the scope of the invention. For example, the apparatus 200 may be used to form and/or repair, for example, a wellbore casing, a pipeline, or a structural support.
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