Phil J Martin

US Patent:

7665533, Feb 23, 2010

Filed:

Oct 24, 2007

Appl. No.:

11/923145

Inventors:

Fergus Hopwood - Houston TX, US
Richard Lewis - Tomball TX, US
Phil Martin - Houston TX, US

Assignee:

Omron Oilfield & Marine, Inc. - Houston TX

International Classification:

E21B 19/16

US Classification:

166380, 166 7751, 16625001, 173164

Abstract:

A system to control a threading operation includes a first tubular and a second tubular, wherein the first tubular and the second tubular include corresponding thread profiles. The system further includes a drive assembly configured to rotate the second tubular with respect to the first tubular, wherein vertical and rotation movements of the drive assembly are controllable through a drive assembly controller, and wherein the drive assembly controller is configured to operate in a threading mode when the second tubular is threaded with the first tubular.

US Patent:

7775297, Aug 17, 2010

Filed:

Dec 6, 2006

Appl. No.:

11/567488

Inventors:

Fergus Hopwood - Houston TX, US
Phil Martin - Houston TX, US
Richard Lewis - Tomball TX, US

Assignee:

Omron Oilfield & Marine, Inc. - Houston TX

International Classification:

E21B 44/00

US Classification:

175 24, 175 25, 175 26, 175 27

Abstract:

A wellbore drilling system is disclosed herein, in which the system includes a weight on bit controller configured to generate a normalized weight on bit output, a drilling torque controller configured to generate a normalized toque on bit output, and a differential pressure controller configured to generate a normalized differential pressure output. The system further includes a rate of penetration controller that is configured to multiply a rate of penetration setpoint with the normalized weight on bit output, the normalized torque on pit output, and the normalized differential pressure output to generate a rate of penetration output.

Author:

Phil Martin

ISBN #:

0439338662