Larry P Thompson

US Patent:

6459262, Oct 1, 2002

Filed:

Apr 25, 2000

Appl. No.:

09/557441

Inventors:

Macmillan M. Wisler - Kingwood TX
Bryan L. Gonsoulin - Houston TX
Larry W. Thompson - Willis TX

Assignee:

Baker Hughes Incorporated - Houston TX

International Classification:

G01V 300

US Classification:

324303

Abstract:

An NMR apparatus includes permanent magnets oppositely polarized in the axial direction and suitably arranged along the axis of the apparatus to produce a nearly radial static magnetic field in a toroidal examination region within the rock formation surrounding the wellbore. A first coil is wound around a cylindrical annulus core coaxial with the magnets, the core including high magnetic permeability material. The first coil produces pulsed RF magnetic fields oriented parallel to the axis of the apparatus and thus perpendicular to the static magnetic field in the toroidal examination region. This reorients certain nuclear spins and the bulk magnetization of the formation within the examination region resulting from them. The first coil picks up on component of the spin-echo signals of the precessing nucleii. A second coil toroidally wound around the same cylindrical annulus core in the form of a torus with windings in planes parallel to the axis of the apparatus detects a second component of the spin-echo signals.

US Patent:

6703833, Mar 9, 2004

Filed:

Aug 20, 2002

Appl. No.:

10/223854

Inventors:

Macmillan M. Wisler - Kingwood TX
Bryan L. Gonsoulin - Houston TX
Larry W. Thompson - Willis TX

Assignee:

Baker Hughes Incorporated - Houston TX

International Classification:

G01V 300

US Classification:

324303

Abstract:

An NMR apparatus includes permanent magnets oppositely polarized in the axial direction and suitably arranged along the axis of the apparatus to produce a nearly radial static magnetic field in a toroidal examination region within the rock formation surrounding the wellbore. A first coil is wound around a cylindrical annulus core coaxial with the magnets, the core including high magnetic permeability material. The first coil produces pulsed RF magnetic fields oriented parallel to the axis of the apparatus and thus perpendicular to the static magnetic field in the toroidal examination region. This reorients certain nuclear spins and the bulk magnetization of the formation within the examination region resulting from them. The first coil picks up on component of the spin-echo signals of the precessing nucleii. A second coil toroidally wound around the same cylindrical annulus core in the form of a torus with windings in planes parallel to the axis of the apparatus detects a second component of the spin-echo signals.

US Patent:

6703837, Mar 9, 2004

Filed:

Sep 15, 2000

Appl. No.:

09/662973

Inventors:

MacMillan M. Wisler - Kingwood TX
Larry W. Thompson - Willis TX

Assignee:

Precision Drilling Technology Services Group, Inc. - Calgary

International Classification:

G01V 330

US Classification:

324338, 324335

Abstract:

The present invention is a propagation resistivity system that utilizes one or more transmitter coil antennas, or âtransmittersâ and at least two receiver coil antennas, or âreceiversâ. The system uses a wellbore resistivity tool which may be embodied as a MWD tool or as a wireline tool. Two or more transmitters may be spaced equally on either side of two or more spaced-apart receivers. Two or more frequencies are transmitted and received simultaneously. Multiple frequencies may be transmitted from each transmitter or from separate transmitters at the same time. Multiple frequencies are simultaneously received and analyzed by the receiver electronics, thereby reducing the measurement time for multiple frequency measurements. In one embodiment each of two transmitters transmits simultaneously. One transmitter operates on a high frequency.

US Patent:

6788066, Sep 7, 2004

Filed:

Jan 16, 2001

Appl. No.:

09/760679

Inventors:

Macmillan M. Wisler - Kingwood TX
Larry W. Thompson - Willis TX
Holger Stibbe - Humble TX
Hallvard S. Hatloy - Nienhagen, DE

Assignee:

Baker Hughes Incorporated - Houston TX

International Classification:

G01V 308

US Classification:

324376, 7315207

Abstract:

A highly accurate, fully compensated, high spatial resolution, wave propagation system for measuring dielectric constant and resistivity of fluids or solids in a cylindrical enclosure and method for measuring well core characteristics in-situ or in a laboratory. One embodiment of the invention relies on waves propagated from transmitters above and below two spaced receivers which transmit and receive electromagnetic waves via slots on the inner periphery of a cylinder structure. The data is then processed with a CPU either down hole for later retrieval or on the surface for real-time monitoring.

US Patent:

7303007, Dec 4, 2007

Filed:

Oct 7, 2005

Appl. No.:

11/203057

Inventors:

Christopher Walter Konschuh - Calgary, CA
Michael Louis Larronde - Houston TX, US
Larry Wayne Thompson - Willis TX, US
Macmillan M. Wisler - Kingwood TX, US

Assignee:

Weatherford Canada Partnership - Edmonton

International Classification:

E21B 47/00
E21B 4/02
G01V 3/18

US Classification:

16625001, 166 651, 166104, 324342, 3408548, 175107, 175 40

Abstract:

Apparatus and methods for establishing electrical communication between an instrument subsection disposed below a mud motor and an electronics sonde disposed above the mud motor in a drill string conveyed borehole logging system. Electrical communication is established via at least one conductor disposed within the mud motor and connecting the instrument sub section to a link disposed between the mud motor and the electronics sonde. The link can be embodied as a current coupling link, a magnetic coupling ling, an electromagnetic telemetry ling and a direct electrical contact link. Two way data transfer is established in all link embodiments. Power transfer is also established in all but the electromagnetic telemetry link.

US Patent:

8011425, Sep 6, 2011

Filed:

Oct 14, 2010

Appl. No.:

12/904301

Inventors:

Christopher Walter Konschuh - Calgary, CA
Michael Louis Larronde - Houston TX, US
Larry Wayne Thompson - Willis TX, US
Macmillan M. Wisler - Kingwood TX, US

Assignee:

Weatherford Canada Partnership - Edmonton, Alberta

International Classification:

E21B 4/02

US Classification:

166 651, 175107, 3408546

Abstract:

Apparatus and methods for establishing electrical communication between an instrument subsection disposed below a mud motor and an electronics sonde disposed above the mud motor in a drill string conveyed borehole logging system. Electrical communication is established via at least one conductor disposed within the mud motor and connecting the instrument sub section to a link disposed between the mud motor and the electronics sonde. The link can be embodied as a current coupling link, a magnetic coupling ling, an electromagnetic telemetry ling and a direct electrical contact link. Two way data transfer is established in all link embodiments. Power transfer is also established in all but the electromagnetic telemetry link.

US Patent:

8191628, Jun 5, 2012

Filed:

Jul 27, 2011

Appl. No.:

13/191577

Inventors:

Christopher Walter Konschuh - Calgary, CA
Michael Louis Larronde - Houston TX, US
Larry Wayne Thompson - Willis TX, US
MacMillan M. Wisler - Kingwood TX, US

Assignee:

Weatherford Canada Partnership - Edmonton

International Classification:

E21B 47/12

US Classification:

16625001, 166 665, 166104, 175107, 175 40

Abstract:

Apparatus and methods for establishing electrical communication between an instrument subsection disposed below a mud motor and an electronics sonde disposed above the mud motor in a drill string conveyed borehole logging system. Electrical communication is established via at least one conductor disposed within the mud motor and connecting the instrument sub section to a link disposed between the mud motor and the electronics sonde. The link can be embodied as a current coupling link, a magnetic coupling ling, an electromagnetic telemetry ling and a direct electrical contact link. Two way data transfer is established in all link embodiments. Power transfer is also established in all but the electromagnetic telemetry link.

US Patent:

8378908, Feb 19, 2013

Filed:

Mar 12, 2007

Appl. No.:

11/685040

Inventors:

Macmillan M. Wisler - Kingwood TX, US
Larry W. Thompson - Willis TX, US
Jian-Qun Wu - Kingwood TX, US
Michael S. Spencer - Conroe TX, US

Assignee:

Precision Energy Services, Inc. - Fort Worth TX

International Classification:

H01Q 1/04

US Classification:

343719, 324338, 343787, 343788

Abstract:

An electromagnetic antenna for Measurement-While-Drilling (MWD) applications is disclosed. The antenna can include several array elements that can act alone or together in various measurement modes. The antenna elements can be disposed in tool body recesses to be protected from damage. The antenna elements can include a ferrite plate crossed or looped by independent current carrying conductors in two or more directions forming a bi-directional or crossed magnetic dipole. Although disclosed as a MWD system conveyed by a drill string, basic concepts of the system are applicable to other types of borehole conveyance.