William John Grayson

US Patent:

7789171, Sep 7, 2010

Filed:

Jan 8, 2007

Appl. No.:

11/620928

Inventors:

William R. Grayson - Houston TX, US
Paul F. Rodney - Spring TX, US

Assignee:

Halliburton Energy Services, Inc. - Houston TX

International Classification:

E21B 47/024

US Classification:

175 45, 175 40

Abstract:

A method and device for measuring a property, such as torque, includes a plurality of sensors, and a measuring device. The sensors attach to a downhole apparatus at a distance from one another. The sensors provide signals indicating their positions. A logic circuit may calculate an angle between the sensors. The logic circuit then calculates the property based on the angle, the distance between the sensors, and other known physical properties of the downhole apparatus.

US Patent:

7962319, Jun 14, 2011

Filed:

Mar 4, 2004

Appl. No.:

10/793161

Inventors:

William R. Grayson - Houston TX, US

Assignee:

Halliburton Energy Services, Inc. - Houston TX

International Classification:

G06G 7/50

US Classification:

703 10

Abstract:

Methods and systems for updating and/or predicting statistical reliability for downhole devices. In some embodiments, the statistical reliability for a device may be predicted prior to using the device to ensure the statistical reliability stays above a preset threshold. In other embodiments, the statistical reliability for a device is tracked substantially simultaneously with use, again to ensure its statistical reliability stays above a predetermined threshold.

US Patent:

8292005, Oct 23, 2012

Filed:

Apr 13, 2010

Appl. No.:

12/759105

Inventors:

William R. Grayson - Houston TX, US
Paul F. Rodney - Spring TX, US

Assignee:

Halliburton Energy Services, Inc. - Houston TX

International Classification:

E21B 47/02

US Classification:

175 45, 175 40

Abstract:

A method and device for measuring a property, such as torque, includes a plurality of sensors, and a measuring device. The sensors attach to a downhole apparatus at a distance from one another. The sensors provide signals indicating their positions. A logic circuit may calculate an angle between the sensors. The logic circuit then calculates the property based on the angle, the distance between the sensors, and other known physical properties of the downhole apparatus.

US Patent:

47852470, Nov 15, 1988

Filed:

Apr 6, 1987

Appl. No.:

7/036170

Inventors:

Richard A. Meador - Spring TX
Larry W. Thompson - Spring TX
William R. Grayson - Houston TX

Assignee:

NL Industries, Inc. - New York NY

International Classification:

G01V 330

US Classification:

324338

Abstract:

An apparatus and method for measuring formation parameters by transmitting and receiving electromagnetic signals by antennas disposed in recesses in a tubular housing member and including apparatus for reducing the coupling of electrical noise into the system resulting from conducting elements located adjacent the recesses and housing. More particularly, a method and apparatus employing electrostatic, but not magnetic, shielding of the low impedance antenna systems and inductive signal coupling to enhance the signal at the receiver is disclosed. This system is capable of measuring formation parameters in the presence of conducting bodies, e. g. , the drill string, permitting incorporation of the apparatus in a measuring while drilling (MWD) logging system. In a particular embodiment, high frequency electromagnetic energy is used to measure formation resistivity. Small low impedance coils are arranged in the wall or around the outer circumferential surface of a steel drill collar and spaced from the surface a minimum distance to allow efficient propagation and reception.