公开(公告)号：CA2785878C

公开(公告)日：2013-11-05

申请号：CA2785878

申请日：2010-06-18

Applicant: WEATHERFORD LAMB

Inventor： REDLINGER THOMAS M ,  ANTOINE ANDREW ,  LE MY ,  SEGURA RICHARD J

IPC: E21B33/035

Abstract: The present invention generally relates to methods and apparatus for subsea well intervention operations, including retrieval of a wellhead from a subsea well. In one aspect, a method of performing an operation in a subsea well is provided. The method comprising the step of positioning a tool proximate a subsea wellhead. The tool has at least one grip member and the tool is attached to a downhole assembly. The method also comprising the step of clamping the tool to the subsea wellhead by moving the at least one grip member into engagement with a profile on the subsea wellhead. The method further comprising the step of applying an upward force to the tool thereby enhancing the grip between the grip member and the profile on the subsea wellhead. Additionally, the method comprising the step of performing the operation in the subsea well by utilizing the downhole assembly. In another aspect, an apparatus for use in a subsea well is provided. In a further aspect, a method of cutting a casing string in a subsea well is provided.

公开(公告)号：CA2785878A1

公开(公告)日：2010-12-24

申请号：CA2785878

申请日：2010-06-18

Applicant: WEATHERFORD LAMB

Inventor： REDLINGER THOMAS M ,  ANTOINE ANDREW ,  LE MY ,  SEGURA RICHARD J

IPC: E21B33/035

Abstract: The present invention generally relates to methods and apparatus for subsea well intervention operations, including retrieval of a wellhead from a subsea well. In one aspect, a method of performing an operation in a subsea well is provided. The method comprising the step of positioning a tool proximate a subsea wellhead. The tool has at least one grip member and the tool is attached to a downhole assembly. The method also comprising the step of clamping the tool to the subsea wellhead by moving the at least one grip member into engagement with a profile on the subsea wellhead. The method further comprising the step of applying an upward force to the tool thereby enhancing the grip between the grip member and the profile on the subsea wellhead. Additionally, the method comprising the step of performing the operation in the subsea well by utilizing the downhole assembly. In another aspect, an apparatus for use in a subsea well is provided. In a further aspect, a method of cutting a casing string in a subsea well is provided.

公开(公告)号：CA2707994C

公开(公告)日：2012-10-30

申请号：CA2707994

申请日：2010-06-18

Applicant: WEATHERFORD LAMB

Inventor： REDLINGER THOMAS M ,  ANTOINE ANDREW ,  LE MY ,  SEGURA RICHARD J

IPC: E21B33/035

Abstract: The present invention generally relates to methods and apparatus for subsea well intervention operations, including retrieval of a wellhead from a subsea well. In one aspect, a method of performing an operation in a subsea well is provided. The method comprising the step of positioning a tool proximate a subsea wellhead. The tool has at least one grip member and the tool is attached to a downhole assembly. The method also comprising the step of clamping the tool to the subsea wellhead by moving the at least one grip member into engagement with a profile on the subsea wellhead. The method further comprising the step of applying an upward force to the tool thereby enhancing the grip between the grip member and the profile on the subsea wellhead. Additionally, the method comprising the step of performing the operation in the subsea well by utilizing the downhole assembly. In another aspect, an apparatus for use in a subsea well is provided. In a further aspect, a method of cutting a casing string in a subsea well is provided.

公开(公告)号：AU2012238269A1

公开(公告)日：2012-11-01

申请号：AU2012238269

申请日：2012-10-09

Applicant: WEATHERFORD LAMB

Inventor： REDLINGER THOMAS M ,  ANTOINE ANDREW ,  LE MY ,  SEGURA RICHARD J

IPC: E21B31/12 ,  E21B31/16 ,  E21B41/04

Abstract: METHODS AND APPARATUS FOR SUBSEA WELL INTERVENTION AND SUBSEA WELLHEAD RETRIEVAL A method of performing an operation in a subsea well, the method comprising: positioning a tool (100) proximate a subsea wellhead (10), the tool (100) having at least one grip member (125) and the tool (100) being attached to a downhole assembly (115); clamping the tool (100) to the subsea wellhead (10) by moving the at least one grip member (125) into engagement with a profile (50) on the subsea wellhead (10); applying an upward force to the tool (100) thereby enhancing the grip between the grip member (125) and the profile (50) on the subsea wellhead (10); and performing the operation in the subsea well by utilizing the downhole assembly (115).

公开(公告)号：AU2010202631A1

公开(公告)日：2011-01-20

申请号：AU2010202631

申请日：2010-06-24

Applicant: WEATHERFORD LAMB

Inventor： REDLINGER THOMAS M ,  ANTOINE ANDREW ,  LE MY ,  SEGURA RICHARD J

IPC: E21B31/12 ,  E21B31/16 ,  E21B41/04

Abstract: The present invention generally relates to methods and apparatus for subsea well intervention operations, including retrieval of a wellhead from a subsea well. In one aspect, a method of performing an operation in a subsea well is provided. The method comprising the step of positioning a tool proximate a subsea wellhead. The tool has at least one grip member and the tool is attached to a downhole assembly. The method also comprising the step of clamping the tool to the subsea wellhead by moving the at least one grip member into engagement with a profile on the subsea wellhead. The method further comprising the step of applying an upward force to the tool thereby enhancing the grip between the grip member and the profile on the subsea wellhead. Additionally, the method comprising the step of performing the operation in the subsea well by utilizing the downhole assembly. In another aspect, an apparatus for use in a subsea well is provided. In a further aspect, a method of cutting a casing string in a subsea well is provided.

公开(公告)号：CA2707994A1

公开(公告)日：2010-12-24

申请号：CA2707994

申请日：2010-06-18

Applicant: WEATHERFORD LAMB

Inventor： REDLINGER THOMAS M ,  ANTOINE ANDREW ,  LE MY ,  SEGURA RICHARD J

IPC: E21B33/035

Abstract: The present invention generally relates to methods and apparatus for subsea well intervention operations, including retrieval of a wellhead from a subsea well. In one aspect, a method of performing an operation in a subsea well is provided. The method comprising the step of positioning a tool proximate a subsea wellhead. The tool has at least one grip member and the tool is attached to a downhole assembly. The method also comprising the step of clamping the tool to the subsea wellhead by moving the at least one grip member into engagement with a profile on the subsea wellhead. The method further comprising the step of applying an upward force to the tool thereby enhancing the grip between the grip member and the profile on the subsea wellhead. Additionally, the method comprising the step of performing the operation in the subsea well by utilizing the downhole assembly. In another aspect, an apparatus for use in a subsea well is provided. In a further aspect, a method of cutting a casing string in a subsea well is provided.