Terry W Shafer

US Patent:

6406277, Jun 18, 2002

Filed:

Nov 22, 2000

Appl. No.:

09/721357

Inventors:

Terry W. Shafer - Broken Arrow OK
Joe V. Henry - Claremore OK

Assignee:

Baker Hughes Incorporated - Houston TX

International Classification:

F04B 3500

US Classification:

4174242, 417244, 4151992

Abstract:

An electrical submersible well pump assembly has an inducer and diffuser for applying a positive pressure to the first pump stage. The pump assembly includes a centrifugal pump with a housing having a well fluid inlet and a number of pump stages. Each pump stage has an impeller and a diffuser. An inducer is mounted in the housing upstream of the impeller of the first pump stage. The inducer has a helical flight that is rotatable in unison with the pump. A diffuser is positioned between the inducer and the impeller of the first stage.

US Patent:

6726449, Apr 27, 2004

Filed:

Mar 18, 2002

Appl. No.:

10/100544

Inventors:

Mark Christopher James - Claremore OK
Terry Wayne Shafer - Broken Arrow OK

Assignee:

Baker Hughes Incorporated - Houston TX

International Classification:

F04D 1310

US Classification:

4151992, 4152141, 4152245

Abstract:

In a downhole centrifugal pump, diffusers are stacked one on top of each other inside of tubular pump housing without contacting the pump drive shaft or impellers. A first compressive device applies a pre-compressive force to a stack of diffusers to prevent the diffusers from rotating inside the tubular housing of the pump with the drive shaft. A second compressive device located between the first compressive device and the stack of diffusers applies another compressive load on the stack of diffusers in the event the first compressive device ceases to apply the compressive load.

US Patent:

6752560, Jun 22, 2004

Filed:

Jun 17, 2002

Appl. No.:

10/173279

Inventors:

Brown Lyle Wilson - Tulsa OK
Terry W. Shafer - Broken Arrow OK
John Jay Mack - Tulsa OK

Assignee:

Baker Hughes Incorporated - Houston TX

International Classification:

F16C 300

US Classification:

403 1, 403292, 403293, 403298, 403319, 403341, 403355, 4033596, 403396, 464182, 464184

Abstract:

A submersible pump assembly having first and second components that are coupled together has a removable externally splined sleeve. A key is located in the keyway between the shaft sleeve and the shaft for transmitting torque. A threaded fastener secures to a threaded hole extending inward from an end face of the shaft end coaxial with an axis of the shaft end. The fastener has a head that engages an outward facing shoulder of the shaft sleeve to releasably secure the shaft sleeve to the shaft. A coupling sleeve has internal splines that engage the external splined section of the shaft sleeve. The coupling sleeve is in engagement with a shaft end assembly of the second component for transmitting torque between the shafts of the first and second components. The head that of the fastener transmits axial loads between the shafts of the first and second components.

US Patent:

6899517, May 31, 2005

Filed:

Nov 8, 2002

Appl. No.:

10/290924

Inventors:

Farral D. Gay - Claremore OK, US
Terry W. Shafer - Broken Arrow OK, US
B. Lyle Wilson - Tulsa OK, US

Assignee:

Baker Hughes Incorporated - Houston TX

International Classification:

F01D003/00

US Classification:

415104, 416198 R, 298891, 384420, 264167

Abstract:

A method of installing an annular bearing element within a centrifugal pump utilizes a mechanical staking operation. The bearing element locates within a receptacle of a pump stage that is surrounded by a retaining wall. Once the bearing element is located within the retaining wall, the retaining wall is permanently deformed at various points against the bearing element. The bearing element, if of a hard wear resistant metal, may have flats for the circumferentially spaced apart deformations to locate within. The bearing element may be a thrust washer for transmitting downward thrust, or it may be a radial support bearing sleeve.

US Patent:

7575413, Aug 18, 2009

Filed:

Mar 10, 2006

Appl. No.:

11/372616

Inventors:

Ryan P. Semple - Broken Arrow OK, US
Robert C. DeLong - Owasso OK, US
Christopher Brunner - Owasso OK, US
Arturo L. Poretti - Claremore OK, US
Terry W. Shafer - Broken Arrow OK, US

Assignee:

Baker Hughes Incorporated - Houston TX

International Classification:

F01D 3/00
F01D 25/16
F04D 29/04

US Classification:

415107, 415229, 384275, 384420

Abstract:

A centrifugal pump has a stationary diffuser with a bore. A thrust bearing has a tubular portion that inserts into the bore. The thrust bearing has an external shoulder that contacts a support surface in the bore of the diffuser for transmitting downward thrust from an upstream impeller to the diffuser. The thrust bearing has an internal shoulder for transmitting upward thrust from a downstream impeller to the diffuser.

US Patent:

8016571, Sep 13, 2011

Filed:

Aug 2, 2007

Appl. No.:

11/833069

Inventors:

Gary W. Speer - Claremore OK, US
Terry W. Shafer - Broken Arrow OK, US
Mark C. James - Claremore OK, US

Assignee:

Baker Hughes Incorporated - Houston TX

International Classification:

F04B 35/00

US Classification:

417365, 4174236, 41742313, 41742312, 384420

Abstract:

A pump end assembly has a centrifugal pump and a motor separated by a chamber. The chamber contains a thrust bearing as well as an intake for the pump. Fluid flowing into the intake flows through the thrust chamber and to the inlet of the pump. Some of the fluid also flows through the thrust bearing for lubricating the thrust bearing.

US Patent:

RE43363, May 8, 2012

Filed:

Mar 31, 2011

Appl. No.:

13/077663

Inventors:

Ryan P. Semple - Owasso OK, US
Robert C. de Long - Owasso OK, US
Christopher Brunner - Owasso OK, US
Arturo L. Poretti - Claremore OK, US
Terry W. Shafer - Broken Arrow OK, US

Assignee:

Baker Hughes Incorporated - Houston TX

International Classification:

F01D 3/00
F01D 25/16
F04D 29/04

US Classification:

415107, 415229, 384275, 384420

Abstract:

A centrifugal pump has a stationary diffuser with a bore. A thrust bearing has a tubular portion that inserts into the bore. The thrust bearing has an external shoulder that contacts a support surface in the bore of the diffuser for transmitting downward thrust from an upstream impeller to the diffuser. The thrust bearing has an internal shoulder for transmitting upward thrust from a downstream impeller to the diffuser.

US Patent:

20090291001, Nov 26, 2009

Filed:

Dec 11, 2008

Appl. No.:

12/332717

Inventors:

David Neuroth - Claremore OK, US
Terry Shafer - Broken Arrow OK, US

Assignee:

BAKER HUGHES INCORPORATED - Houston TX

International Classification:

F04B 35/04

US Classification:

4174101

Abstract:

An electrical submersible well pump assembly having a pump, a pump motor, and a seal section. The motor drives the pump via shafts rotatingly coupled with a coupling assembly. The coupling assembly includes an alignment device that maintains the shaft ends in coaxial alignment. The alignment device compressibly engages one or both of the shafts. The alignment device may be an elongated member having slots cut along its length on one or both ends configured to compress when inserted into a bore coaxially formed into the shaft ends within the coupling assembly.