James Russel Florey

US Patent:

8579051, Nov 12, 2013

Filed:

Aug 6, 2010

Appl. No.:

12/852165

Inventors:

Robert J. Buske - The Woodlands TX, US
James Florey - The Woodlands TX, US

Assignee:

Baker Hughes Incorporated - Houston TX

International Classification:

E21B 10/16

US Classification:

175376, 175341, 175378

Abstract:

Described herein are roller cone drill bits and modified roller cones for use in drilling subterranean earth formations, and more specifically roller cone drill bits and roller cones having optimized spear point designs and blade orientations on at least one of the roller cones for reduced tracking and/or increased drilling performance during bit use. The roller cone drill bits include a bit body with a longitudinal axis, one or more bit legs depending from the body, and at least one roller cone attached to each of the bit legs and able to rotate with respect to the bit body, wherein at least one of the roller cones includes a spear point at the cone apex having two or more cutting blades, the cutting blades being oriented at a variety of non-equal, asymmetric angles about a central cone axis with respect to each other, such that tracking during drilling using the drill bit is minimized or eliminated.

US Patent:

20090152013, Jun 18, 2009

Filed:

Dec 14, 2007

Appl. No.:

11/957207

Inventors:

Robert J. Buske - The Woodlands TX, US
James R. Florey - Spring TX, US

Assignee:

BAKER HUGHES INCORPORATED - Houston TX

International Classification:

E21B 10/18
B21K 5/04

US Classification:

175340, 761084

Abstract:

Flow tubes for earth-boring tools include hardfacing material for protecting the tubes from erosion due to the flow of fluid through a fluid passageway extending therethrough. Earth-boring tools include an erosion-resistant material covering a surface of a body of the tools for protecting the bodies from erosion due to the flow of fluid through a fluid passageway extending therethrough. Methods of forming earth-boring tools include forming a body having a fluid passageway extending therethrough and covering a surface of the body with a hardfacing material. The surface of the body may be located in a region susceptible to erosion when fluid is caused to flow through the fluid passageway.