James A Brewer

US Patent:

6450022, Sep 17, 2002

Filed:

Feb 8, 2001

Appl. No.:

09/779238

Inventors:

James E. Brewer - Houston TX

Assignee:

Baker Hughes Incorporated - Houston TX

International Classification:

E21B 4400

US Classification:

7315248

Abstract:

A device to monitor and quantify the tension and compression forces acting on a well logging instrument string during deployment. The device eliminates the undesirable effects of downhole hydrostatic pressure on the sensors, and eliminates the need for a costly, complex, and high maintenance hydraulic pressure equalizing system in the force gage assembly. The device provides improved measurement accuracy, provides enhanced reliability and longer life of the sensors, and allows lower cost of manufacture and maintenance.

US Patent:

6484801, Nov 26, 2002

Filed:

Mar 16, 2001

Appl. No.:

09/810985

Inventors:

James E. Brewer - Houston TX
Borislav Tchakarov - Katy TX
Paul G. Junghans - Houston TX
James C. Hunziker - New Caney TX

Assignee:

Baker Hughes Incorporated - Houston TX

International Classification:

E21B 1720

US Classification:

166 651, 1662426, 439194

Abstract:

A universal joint between adjacent, electrically connected instrument housings for downhole well operations allow the connected housings to bend longitudinally as required to traverse an arced section of a well bore but does not permit relative elongation or twisting about the longitudinal axis of the housings. In one embodiment, a fluid impermeable open passage space at atmospheric pressure surrounds electrical signal carriers linking the instrument circuitry within the two housings. The passage is constructed as a high-pressure flexible bellows or as a braided or spiral wound high-pressure fluid hose. In another embodiment, a fluid impermeable sheath surrounds the signal carriers and encapsulates the signal carriers by a resilient solid. The articulation structure comprises a Cardan-type of universal joint wherein two fingers project longitudinally from the end of each of the housings. The fingers are meshed and pivotally joined to respective spindles projecting radially from the open center of a ring spyder.

US Patent:

6662645, Dec 16, 2003

Filed:

Feb 5, 2002

Appl. No.:

10/068284

Inventors:

James E. Brewer - Houston TX

Assignee:

Baker Hughes Incorporated - Houston TX

International Classification:

E21B 4400

US Classification:

7315248

Abstract:

A device to monitor and quantify the tension and compression forces acting on a well logging instrument string during deployment. The device eliminates the undesirable effects of downhole hydrostatic pressure on the sensors, and eliminates the need for a costly, complex, and high maintenance hydraulic pressure equalizing system in the force gage assembly. The device provides improved measurement accuracy, provides enhanced reliability and longer life of the sensors, and allows lower cost of manufacture and maintenance.

US Patent:

20040134667, Jul 15, 2004

Filed:

Nov 13, 2003

Appl. No.:

10/712866

Inventors:

James Brewer - Houston TX, US
Homero Castillo - Kingwood TX, US
James Rogers - Spring TX, US

Assignee:

Baker Hughes Incorporated - Houston TX

International Classification:

E21B017/00

US Classification:

166/380000, 166/242600

Abstract:

An apparatus for releasably connecting a wireline to a downhole tool comprises a connector having a first member adapted for connection to the downhole tool and a second member adapted for connection to the wireline. A plurality of locking elements are constrained to engage the first and second members by a moveable release member, where the plurality of locking elements maintain the first and second members in a connected position when the moveable release member is in a first locked position. An electromechanical actuator moves the moveable release member to a second released position, releasing the plurality of locking elements from engagement with the first and second members. This allows the first and second members to release the wireline from the tool.

US Patent:

58081917, Sep 15, 1998

Filed:

Aug 28, 1997

Appl. No.:

8/924067

Inventors:

Albert A. Alexy - Katy TX
Arnold M. Walkow - Houston TX
Randy Gold - Houston TX
James E. Brewer - Houston TX

Assignee:

Western Atlas International, Inc. - Houston TX

International Classification:

G01V 320
G01V 140
G01B 712

US Classification:

7315203

Abstract:

A well logging instrument string including a first section adapted to be operated substantially in contact with a wall of a wellbore, a coupling connected at one end to one end of the first section. The coupling includes first and second flexible joints for enabling relative angular deflection between the first section and a second section. The coupling includes a biasing mechanism for urging at least one of either the first or the second flexible joints, or both, to assume their positions of maximum angular deflection. The instrument string includes a second section connected to the other end of the coupling. The second section is adapted to be operated spaced apart from the wellbore wall.

US Patent:

57058121, Jan 6, 1998

Filed:

May 31, 1996

Appl. No.:

8/656503

Inventors:

James E. Brewer - Houston TX
Richard R. Pemper - Sugar Land TX
Izhar Ahmad - League City TX
Randy Gold - Houston TX

Assignee:

Western Atlas International, Inc. - Houston TX

International Classification:

G01V 504
G01V 500

US Classification:

250264

Abstract:

An apparatus and method for detecting the location of subsurface markers in a formation proximate to a borehole. The apparatus includes marker detectors in a housing having at least two housing sections attached in an initial orientation. The distance between the detectors is measured under controlled conditions with a calibration bar. The initial attached orientation between the housing sections is identified with a calibrator, and deviations from the initial attached orientation are identified by the calibrator after the housing sections are detached and reattached. The calibrator permits well site corrections to be made to the housing sections without recalibration. Gauges permit corrections for temperature and pressure fluctuations, and the corrected distances between the housing detectors is computed. Detectors in the housing generate signals when each detector is proximate to a marker in the formation, and such signals can be processed to identify the elevation of a marker in the borehole, or the distance between markers in the borehole, to determine formation compaction or settlement. In an apparatus having two detectors separated by a spacer, flexible retainers can be positioned between each detector and the spacer to permit thermal expansion or contraction of the detectors relative to the spacer.

US Patent:

39774686, Aug 31, 1976

Filed:

Oct 28, 1975

Appl. No.:

5/625993

Inventors:

James Edward Brewer - Houston TX
Raymond Earl Roesner - Houston TX

Assignee:

Dresser Industries, Inc. - Dallas TX

International Classification:

E21B 1710

US Classification:

166241

Abstract:

An earth borehole instrument has a plurality of wear link members adapted to engage the borehole walls which are pivotally attached through articulated mechanical arms both to a fixed collar and to a spring-loaded slidable collar on the instrument. The articulated arms for each wear link member consist of a pair of power arms which are each pivoted at a center point on the wear link adapted to engage the borehole wall and a pair of sensing arms which are pivotally connected, respectively, to the ends of the wear link. In an alternative embodiment, a bow spring is mounted on the underside of the power arms for maintaining the wear link flat against the borehole wall.