JOHN THOMAS
Geologists in Magnolia, TX
License number
Alaska GEOG715
Issued Date
Aug 27, 2014
Effective Date
Aug 27, 2014
Category
Geology
Address
Address
240 Oak Hallow Blvd, Magnolia, TX 77355
Professional information
Cutting Elements Configured For Casing Component Drillout And Earth Boring Drill Bits Including Same
US Patent:
7954570, Jun 7, 2011
Filed:
Sep 20, 2006
Appl. No.:
11/524503
Inventors:
Eric E. McClain - Spring TX, US
John C. Thomas - Magnolia TX, US
Sarvesh Tyagi - The Woodlands TX, US
Jack T. Oldham - Conroe TX, US
Lester I. Clark - The Woodlands TX, US
William Heuser - Kuala Lumpur, MY
John C. Thomas - Magnolia TX, US
Sarvesh Tyagi - The Woodlands TX, US
Jack T. Oldham - Conroe TX, US
Lester I. Clark - The Woodlands TX, US
William Heuser - Kuala Lumpur, MY
Assignee:
Baker Hughes Incorporated - Houston TX
International Classification:
E21B 10/46
US Classification:
175426, 175430, 175434
Abstract:
A drill bit includes a bit body having a face on which two different types of cutting elements are disposed, the first type being cutting elements suitable for drilling at least one subterranean formation and the second type being cutting elements suitable for drilling through a casing bit disposed at an end of a casing or liner string and cementing equipment or other components, if such are disposed within the casing or liner string, as well as cement inside as well as exterior to the casing or liner string. The second type of cutting elements exhibits a relatively greater exposure than the first type of cutting elements, so as to engage the interior of the casing bit and, if present, cementing equipment components and cement to drill therethrough, after which the second type of cutting elements quickly wears upon engagement with the subterranean formation material exterior to the casing bit, and the first type of cutting elements continues to drill the subterranean formation. The first type of cutting elements may comprise superabrasive cutting elements and the second type of cutting elements may comprise abrasive or superabrasive cutting elements comprising a plurality of configurations.
Reaming Tool Suitable For Running On Casing Or Liner
US Patent:
7621351, Nov 24, 2009
Filed:
May 11, 2007
Appl. No.:
11/747651
Inventors:
Lester I. Clark - The Woodlands TX, US
John C. Thomas - Magnolia TX, US
Jeffrey B. Lund - Salt Lake City UT, US
Eric E. McClain - Spring TX, US
John C. Thomas - Magnolia TX, US
Jeffrey B. Lund - Salt Lake City UT, US
Eric E. McClain - Spring TX, US
Assignee:
Baker Hughes Incorporated - Houston TX
International Classification:
E21B 7/28
US Classification:
175394, 175406
Abstract:
A reaming tool includes a tubular body having a nose portion with a concave center. A plurality of blades defining junk slots therebetween extend axially behind the nose and taper outwardly from the exterior of the tubular body. Rotationally leading edges of the blades carry a plurality of cutting elements from the axially leading ends. Selected surfaces and edges of the blades bear tungsten carbide, which may comprise crushed tungsten carbide. The shell of the nose is configured to ensure drillout from the centerline thereof toward the side wall of the tubular body. A method of drilling out a reaming tool is also disclosed.