Carl W Edwards

US Patent:

6690167, Feb 10, 2004

Filed:

Oct 12, 2001

Appl. No.:

09/976493

Inventors:

Arcady Reiderman - Houston TX
Carl M. Edwards - Katy TX

Assignee:

Baker Hughes Incorporated - Houston TX

International Classification:

G01V 300

US Classification:

324314, 324303, 324307

Abstract:

A method for acquiring nuclear magnetic resonance measurements of a material uses a modified CPMG sequence with a refocusing pulse having a tipping angle less than 180 Â. The results of using the shortened refocusing pulse with reduced power requirements are comparable to those obtained with a conventional CPMG sequence.

US Patent:

7834622, Nov 16, 2010

Filed:

Oct 18, 2007

Appl. No.:

11/874532

Inventors:

Arcady Reiderman - Houston TX, US
David R. Beard - Houston TX, US
Carl M. Edwards - Katy TX, US

Assignee:

Baker Hughes Incorporated - Houston TX

International Classification:

G01V 3/00

US Classification:

324303, 324307

Abstract:

A magnet assembly for measuring properties of a formation from a borehole, the magnet assembly including a first device and a second device, each device adapted for insertion into the borehole, the first device producing a first magnetic field, the second device producing a second magnetic field; wherein the second magnetic field is configurable for one of reinforcing and reducing the first magnetic field; and wherein the first device comprises a permanent magnet and the second device comprises at least one of one of a switchable magnet and switching windings.

US Patent:

8131494, Mar 6, 2012

Filed:

Dec 4, 2008

Appl. No.:

12/328181

Inventors:

Daniel T. Georgi - Houston TX, US
Carl M. Edwards - Katy TX, US
Sheng Fang - Houston TX, US
Rocco DiFoggio - Houston TX, US
Robert A. Estes - Houston TX, US

Assignee:

Baker Hughes Incorporated - Houston TX

International Classification:

G01R 35/00

US Classification:

702 90

Abstract:

A method to correct for a systematic error of a sensor having a plurality of accelerometers configured to measure gravitational acceleration, the method including: rotating the plurality of accelerometers about a first axis; obtaining a first set of calibration measurements from the plurality of accelerometers from the rotation about the first axis; determining a first systematic error for each accelerometer in the plurality using the first set of calibration measurements; and removing the first systematic error from sensor measurements to correct for the systematic error.

US Patent:

8633689, Jan 21, 2014

Filed:

Dec 17, 2010

Appl. No.:

12/971740

Inventors:

Lilong Li - Humble TX, US
Songhua Chen - Katy TX, US
Carl M. Edwards - Katy TX, US

Assignee:

Baker Hughes Incorporated - Houston TX

International Classification:

G01V 3/00

US Classification:

324306

Abstract:

A method and apparatus for estimating a flow rate of a phase of a multiphase fluid is disclosed. In the first method, nuclei in the fluid are polarized over two distances and a measured magnetization gives the relative fraction of two components of the fluid for a selected velocity. In the second method, nuclei in the fluid are polarized over a specified distance and measurements of the decay of spin echo signals is used to give the relative fraction of two components of the fluid for the selected velocity.

US Patent:

20090126486, May 21, 2009

Filed:

Nov 20, 2007

Appl. No.:

11/943200

Inventors:

Daniel T. Georgi - Houston TX, US
Carl M. Edwards - Katy TX, US
Sheng Fang - Houston TX, US
Rocco DiFoggio - Houston TX, US
Robert Estes - Tomball TX, US

Assignee:

BAKER HUGHES INCORPORATED - Houston TX

International Classification:

G01V 7/00

US Classification:

73382 R, 702 6

Abstract:

An instrument for measuring gravitational acceleration, the instrument including: a plurality of accelerometers disposed about a three-dimensional structure, the plurality of accelerometers providing output used for measuring the gravitational acceleration; wherein each accelerometer in the plurality is implemented by at least one of a micro-electromechanical system (MEMS) and a nano-electromechanical system (NEMS).

US Patent:

20120092006, Apr 19, 2012

Filed:

Oct 19, 2010

Appl. No.:

12/907707

Inventors:

Lilong Li - Humble TX, US
Songhua Chen - Katy TX, US
Carl M. Edwards - Katy TX, US
Joo Tim Ong - Houston TX, US

Assignee:

BAKER HUGHES INCORPORATED - Houston TX

International Classification:

G01R 33/44

US Classification:

324306, 324307

Abstract:

A method and apparatus for estimating a flow rate of a phase of a multiphase fluid is disclosed. A first velocity distribution is obtained for a first set of nuclei in the fluid from a Nuclear Magnetic Resonance (NMR) signal received for the fluid in response to a first NMR excitation signal. A second velocity distribution is obtained for a second set of nuclei in the fluid from an NMR signal received for the fluid in response to a second NMR excitation signal. A velocity of the phase is estimated from the first velocity distribution and the second velocity distribution. The flow rate of the phase is estimated using the estimated velocity of the phase and an estimated volume fraction of the phase.

US Patent:

20130018602, Jan 17, 2013

Filed:

Jul 12, 2011

Appl. No.:

13/180902

Inventors:

Joo Tim Ong - Houston TX, US
Terry R. Bussear - Spring TX, US
Carl M. Edwards - Katy TX, US
Graeme S. Young - The Woodlands TX, US

Assignee:

BAKER HUGHES INCORPORATED - Houston TX

International Classification:

G01F 1/58

US Classification:

702 45

Abstract:

An apparatus and method for estimating a parameter of a fluid flowing in a tubular is disclosed. A source of a primary magnetic field is coupled to the tubular and is configured to induce the primary magnetic field in the fluid to align nuclei of the fluid in the tubular along the primary magnetic field. A transmitter transmits an excitation signal into the fluid. A receiver detects a signal from the aligned nuclei responsive to the excitation signal. A processor estimates the parameter of the fluid from the detected signal. The source of the primary magnetic field is removable from the tubular. A coil may induce a secondary magnetic field to either enhance the strength of the primary magnetic field in the tubular or substantially cancel the primary magnetic field in the tubular, for example, to reduce particle build-up in the tubular.

US Patent:

20130206397, Aug 15, 2013

Filed:

Feb 14, 2012

Appl. No.:

13/396134

Inventors:

Daniel T. GEORGI - Houston TX, US
Martin P. CORONADO - Cypress TX, US
Carl M. EDWARDS - Katy TX, US
Antonius M. LOERMANS - Dhahran, SA

Assignee:

BAKER HUGHES INCORPORATED - Houston TX

International Classification:

E21B 23/00
E21B 47/00

US Classification:

16625001, 1662411, 166 651, 166381

Abstract:

A downhole positioning apparatus includes: a carrier configured to be disposed in a borehole in an earth formation, the carrier including at least one measurement tool and an extendable member configured to be actuated between a first position in which the extendable member is disposed at the carrier and a second position in which the member is extended from an outer surface of the carrier; and a receiving element fixedly disposed at a borehole casing, the receiving element configured to receive the elongated member when the member is in the second position and guide the carrier to a selected orientation as the carrier is moved axially through the borehole.