My Linh Le

US Patent:

8307903, Nov 13, 2012

Filed:

Jun 24, 2009

Appl. No.:

12/490508

Inventors:

Thomas M. Redlinger - Houston TX, US
Andrew Antoine - Houston TX, US
My Le - Sugar Land TX, US
Richard J. Segura - Cypress TX, US

Assignee:

Weatherford / Lamb, Inc. - Houston TX

International Classification:

E21B 29/12
E21B 23/00

US Classification:

166341, 166338, 166351, 166361, 166368, 166298, 285 81

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.

US Patent:

20130092383, Apr 18, 2013

Filed:

Oct 11, 2012

Appl. No.:

13/649927

Inventors:

Andrew Antoine - Houston TX, US
My Le - Sugar Land TX, US
Richard J. Segura - Cypress TX, US

Assignee:

WEATHERFORD/LAMB, INC. - Houston TX

International Classification:

E21B 23/00
E21B 47/00
E21B 29/12

US Classification:

166336, 166351, 166361, 166338

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.