Thomas C Ray

US Patent:

20100038142, Feb 18, 2010

Filed:

Sep 3, 2009

Appl. No.:

12/553238

Inventors:

John K. Snyder - Cypress TX, US
Victor Gawski - Whitecairns, GB
Jeremy Buc Slay - Fort Worth TX, US
Thomas Wayne Ray - Tyler TX, US

Assignee:

Halliburton Energy Services, Inc. - Houston TX

International Classification:

E21B 4/02
E21B 7/00
F01C 1/10

US Classification:

175107, 175 57, 418 48

Abstract:

An apparatus () for drilling a wellbore that transverses a subterranean hydrocarbon bearing formation. The apparatus () includes a drill string () having an inner fluid passageway (). A drill bit () is disposed at a distal end of the drill string () and is operable to rotate relative to at least a portion of the drill string (). A fluid motor () is disposed within the drill string () and is operable to rotate the drill bit () in response to a circulating fluid received via the inner fluid passageway () of the drill string (). The fluid motor () has a stator () with (n) lobes and a rotor () with (n−1) lobes. The stator () includes an inner surface formed from a first material and the rotor () includes an outer surface formed from a second material that is dissimilar to the first material.

Address:

803 Shadowglen St, Channelview, TX 77530

VIN:

2GCEC13Z371168145

Make:

CHEVROLET

Model:

SILVERADO 1500 CLASSIC 2

Year:

2007