Graeme J Walker

US Patent:

8151902, Apr 10, 2012

Filed:

Apr 17, 2009

Appl. No.:

12/425594

Inventors:

Gerald D. Lynde - Houston TX, US
Graeme J. Walker - Kingwood TX, US

Assignee:

Baker Hughes Incorporated - Houston TX

International Classification:

E21B 4/18
E21B 4/04

US Classification:

175 51, 166 651, 175104, 175106

Abstract:

A bottom hole assembly is run into the wellbore on slickline with a tractor to assist in movement of the bottom hole assembly through a deviation in either direction. The tractor can have retractable drive components and can be responsive to tension in the slickline to turn it on and to avoid overrunning the slickline if driving out.

US Patent:

20050092501, May 5, 2005

Filed:

Feb 20, 2004

Appl. No.:

10/783404

Inventors:

Raymond Chavers - Humble TX, US
Graeme Walker - Kingwood TX, US
John Cobb - Humble TX, US
Alfredo Gomez - Houston TX, US

Assignee:

Baker Hughes Incorporated - Houston TX

International Classification:

E21B033/12
E21B034/14

US Classification:

166386000, 166332100

Abstract:

Systems and methods for positively closing off a section of wellbore and, thereby providing reservoir control. Systems and methods are described for selectively closing off a section of a wellbore to fluid communication. The wellbore completion section may then be reopened to fluid communication upon reconnection of the upper completion section to the lower completion section. Advantageously, the systems and methods of the present invention generally preclude fluid communication between the annulus of the upper completion section and the flowbore of the lower completion section until the lower completion section is closed off to fluid flow.

US Patent:

20070119599, May 31, 2007

Filed:

Jan 29, 2007

Appl. No.:

11/668364

Inventors:

Raymond Chavers - Humble TX, US
Graeme Walker - Kingwood TX, US
John Cobb - Humble TX, US
Alfredo Gomez - Houston TX, US

Assignee:

BAKER HUGHES INCORPORATED - Houston TX

International Classification:

E21B 33/12

US Classification:

166386000, 166319000

Abstract:

Systems and methods for positively closing off a section of wellbore and, thereby providing reservoir control. Systems and methods are described for selectively closing off a section of a wellbore to fluid communication. The wellbore completion section may then be reopened to fluid communication upon reconnection of the upper completion section to the lower completion section. Advantageously, the systems and methods of the present invention generally preclude fluid communication between the annulus of the upper completion section and the flowbore of the lower completion section until the lower completion section is closed off to fluid flow.