Robert A Coyle

US Patent:

8511390, Aug 20, 2013

Filed:

Dec 22, 2010

Appl. No.:

12/976636

Inventors:

Robert A. Coyle - Katy TX, US
William Michel - Azerailles, FR
Louis-Claude Porel - Azerailles, FR
Alistair Gill - Houston TX, US
Paul Ellerton - Derby, GB
David Fielding - Derby, GB

Assignee:

BP Corporation North America Inc. - Houston TX

International Classification:

E21B 43/00
F04B 17/03

US Classification:

166369, 166 664

Abstract:

A deliquification pump for deliquifying a well comprises a fluid end pump adapted to pump a fluid from a wellbore. In addition, the deliquification pump comprises a hydraulic pump adapted to drive the fluid end pump. The hydraulic pump includes a first internal pump chamber and a first pump assembly disposed in the first chamber. The first pump assembly includes a piston having a first end, a second end, and a throughbore extending between the first end and the second end. In addition, the first pump assembly includes a first wobble plate including a planar end face axially adjacent the second end of the piston and a slot extending axially through the first wobble plate. The first wobble plate is adapted to rotate about the central axis relative to the housing to axially reciprocate the piston and cyclically place the throughbore of the piston in fluid communication with the slot.

US Patent:

20130299181, Nov 14, 2013

Filed:

Jul 9, 2013

Appl. No.:

13/937778

Inventors:

Robert A. Coyle - Katy TX, US
William Michel - Azerailles, FR
Louis-Claude Porel - Azerailles, FR
Alistair Gill - Houston TX, US
Paul Ellerton - Derby, GB
David Fielding - Derby, GB

Assignee:

BP Corporation North America, Inc. - Houston TX

International Classification:

E21B 43/12

US Classification:

166372, 166105, 166 664, 1661051

Abstract:

A deliquification pump for deliquifying a well comprises a fluid end pump adapted to pump a fluid from a wellbore. In addition, the deliquification pump comprises a hydraulic pump adapted to drive the fluid end pump. The hydraulic pump includes a first internal pump chamber and a first pump assembly disposed in the first chamber. The first pump assembly includes a piston having a first end, a second end, and a throughbore extending between the first end and the second end. In addition, the first pump assembly includes a first wobble plate including a planar end face axially adjacent the second end of the piston and a slot extending axially through the first wobble plate. The first wobble plate is adapted to rotate about the central axis relative to the housing to axially reciprocate the piston and cyclically place the throughbore of the piston in fluid communication with the slot.

US Patent:

20130299182, Nov 14, 2013

Filed:

Jul 9, 2013

Appl. No.:

13/937807

Inventors:

Robert A. Coyle - Katy TX, US
William Michel - Azerailles, FR
Louis-Claude Porel - Azerailles, FR
Alistair Gill - Houston TX, US
Paul Ellerton - Derby, GB
David Fielding - Derby, GB

Assignee:

BP CORPORATION NORTH AMERICA, INC. - Houston TX

International Classification:

E21B 43/12

US Classification:

166372, 166105, 166 664

Abstract:

A deliquification pump for deliquifying a well comprises a fluid end pump adapted to pump a fluid from a wellbore. In addition, the deliquification pump comprises a hydraulic pump adapted to drive the fluid end pump. The hydraulic pump includes a first internal pump chamber and a first pump assembly disposed in the first chamber. The first pump assembly includes a piston having a first end, a second end, and a throughbore extending between the first end and the second end. In addition, the first pump assembly includes a first wobble plate including a planar end face axially adjacent the second end of the piston and a slot extending axially through the first wobble plate. The first wobble plate is adapted to rotate about the central axis relative to the housing to axially reciprocate the piston and cyclically place the throughbore of the piston in fluid communication with the slot.