Robert Herlan Slaughter

US Patent:

7152702, Dec 26, 2006

Filed:

Nov 4, 2005

Appl. No.:

11/267017

Inventors:

Amol Bhome - Ponca City OK, US
Robert H. Slaughter - Ponca City OK, US

Assignee:

Smith International, Inc. - Houston TX

International Classification:

E21B 10/633
E21B 10/28
E21B 10/42
B23D 77/00

US Classification:

175384, 175413, 175406, 408186

Abstract:

A modular back reamer to be used in subterranean drilling includes a drive stem, a reamer body having a plurality of receptacles, wherein the receptacles are configured to retain a cutting leg assembly, and a plurality of shims engaged within the receptacles to secure the cutting leg assemblies at a specified height.

US Patent:

20010015290, Aug 23, 2001

Filed:

Jan 9, 2001

Appl. No.:

09/757297

Inventors:

J. Sue - The Woodlands TX, US
Robert Slaughter - Ponca City OK, US
Peter Cariveau - Stillwater OK, US

International Classification:

E21B010/46

US Classification:

175/374000, 175/426000

Abstract:

A roller cone for a rock bit is disclosed. The cone includes a cone substrate and hardfacing applied by a welding process in grooves on the exterior surface of the cone substrate. The cone also includes hardfacing applied by a thermal spraying process to insert lands on the exterior surface of the cone substrate.

US Patent:

20010050187, Dec 13, 2001

Filed:

Aug 17, 2001

Appl. No.:

09/932540

Inventors:

Robert Slaughter - Ponca City OK, US
Peter Cariveau - Ponca City OK, US
Kirk Norris - Sand Spring OK, US
Roger Didericksen - Ponca City OK, US
William Conn - Newton KS, US

International Classification:

E21B010/24

US Classification:

175/228000, 175/337000, 175/371000

Abstract:

A rotary cone rock bit, comprises a bit body including a plurality of legs extending therefrom, each of the legs having an outer surface that includes a leading surface and a trailing surface, a roller cone rotatably supported on each of the legs, a bearing system between each cone and the leg on which it is supported, and a lubricant reservoir in fluid communication with the bearing system. The reservoir can be provided with a wear resistant plug, if desired. In the present bit, the reservoir has at least one opening positioned in either the leg's leading surface, trailing surface, center surface, shoulder surface or some combination of these. Alternatively, the reservoir can be formed inside the bit body, preferably by means of a canister, which can be provided with venting means as desired.

US Patent:

20020108785, Aug 15, 2002

Filed:

Feb 12, 2002

Appl. No.:

10/075052

Inventors:

Robert Slaughter - Ponca City OK, US
Peter Cariveau - Ponca City OK, US
Vincent Shotton - Ponca City OK, US

International Classification:

E21B010/26

US Classification:

175/053000, 175/406000

Abstract:

A back reaming tool is disclosed which includes a tool body adapted to be coupled to a drill string, and at least one roller cone rotatably mounted to a leg and having cutting elements disposed thereon. The leg is removably coupled to the tool body. The at least one roller cone is open at only one axial end thereof.

US Patent:

20020153172, Oct 24, 2002

Filed:

Mar 18, 2002

Appl. No.:

10/100100

Inventors:

Gary Portwood - Kingwood TX, US
Chris Cawthorne - The Woodlands TX, US
Robert Slaughter - Ponca City OK, US
Roger Didericksen - Ponca City OK, US
Peter Cariveau - Ponca City OK, US
Robert Denton - Pearland TX, US

International Classification:

E21B010/14

US Classification:

175/337000, 175/371000

Abstract:

A drill bit for use in a borehole at least partially containing drilling fluid includes a bit body having at least two bit components, including at least one leg, the leg having a journal segment, and a roller cone rotatably mounted upon the journal segment and forming at least one bearing cavity therebetween. Also included is an annular primary seal disposed between the leg and the roller cone, an annular secondary seal disposed between the leg and the roller cone and between the annular primary seal and the borehole and an annular space disposed between the annular primary seal and the annular secondary seal, the annular space at least partially containing fluid and being in substantially absolute fluid isolation from the bearing cavity and means for permitting the flow of fluid from the annular space to the borehole. The annular secondary seal may be primarily elastomeric and the means for permitting the flow of fluid may further permit the flow of fluid from the borehole to the annular space. The annular space may at least partially include a grease possessing a water washout value of under approximately 50% per ASTM D-4049 water spray test for lubrication characteristics and the grease may include a polymer tackifier of between approximately 1% and approximately 5% by weight.

US Patent:

20030019666, Jan 30, 2003

Filed:

Aug 7, 2002

Appl. No.:

10/214020

Inventors:

Gary Portwood - Kingwood TX, US
Chris Cawthorne - The Woodlands TX, US
Robert Denton - Pearland TX, US
Robert Slaughter - Ponca City OK, US
Roger Didericksen - Ponca City OK, US
Peter Cariveau - Stillwater OK, US

Assignee:

Smith International, Inc. - Houston TX

International Classification:

E21B010/24

US Classification:

175/371000, 175/227000, 175/337000, 277/336000, 277/928000, 384/094000

Abstract:

A drill bit for use in a borehole at least partially containing drilling fluid includes a bit body having at least two bit components, including at least one leg, the leg having a journal segment, and a roller cone rotatably mounted upon the journal segment and forming at least one bearing cavity therebetween. Also included is an annular primary seal disposed between the leg and the roller cone, an annular secondary seal disposed between the leg and the roller cone and between the annular primary seal and the borehole and an annular space disposed between the annular primary seal and the annular secondary seal, the annular space at least partially containing fluid and being in substantially absolute fluid isolation from the bearing cavity and means for permitting the flow of fluid from the annular space to the borehole. The annular secondary seal may be primarily elastomeric and the means for permitting the flow of fluid may further permit the flow of fluid from the borehole to the annular space. The annular space may at least partially include a grease possessing a water washout value of under approximately 50% per ASTM D-4049 water spray test for lubrication characteristics and the grease may include a polymer tackifier of between approximately 1% and approximately 5% by weight.

US Patent:

20030066391, Apr 10, 2003

Filed:

Oct 10, 2001

Appl. No.:

09/974735

Inventors:

Anthony Griffo - The Woodlands TX, US
Zhigang Fang - The Woodlands TX, US
Robert Slaughter - Ponca City OK, US

International Classification:

B21K005/04

US Classification:

076/108200, 076/108100

Abstract:

A method of forming a drill bit structure, the method including fixing spacers to the drill bit structure. The spacers are arranged at preselected locations on an outer surface of the drill bit structure. A hardfacing material is then applied to the drill bit structure, and the spacers are removed. Holes are machined in the drill bit structure at the preselected locations, and drilling inserts are positioned in each hole. A method of forming a drill bit structure, the method including applying a hardfacing material to selected surfaces of the drill bit structure. The hardfacing material includes a perforated carbide infiltrated material and a perforated powder infiltrated material. The perforations in the powder infiltrated material correspond to the perforations in the carbide infiltrated material. Holes are machined in the drill bit structure at the locations of the perforations, and drilling inserts are positioned in each hole.

US Patent:

20040187290, Sep 30, 2004

Filed:

Feb 9, 2004

Appl. No.:

10/774571

Inventors:

Anthony Griffo - The Woodlands TX, US
Zhigang Fang - The Woodlands TX, US
Robert Slaughter - Ponca City OK, US

International Classification:

B23P025/00
H05H001/26

US Classification:

029/458000, 427/446000

Abstract:

A method of forming a drill bit structure, the method including fixing spacers to the drill bit structure. The spacers are arranged at preselected locations on an outer surface of the drill bit structure. A hardfacing material is then applied to the drill bit structure, and the spacers are removed. Holes are machined in the drill bit structure at the preselected locations, and drilling inserts are positioned in each hole. A method of forming a drill bit structure, the method including applying a hardfacing material to selected surfaces of the drill bit structure. The hardfacing material includes a perforated carbide infiltrated material and a perforated powder infiltrated material. The perforations in the powder infiltrated material correspond to the perforations in the carbide infiltrated material. Holes are machined in the drill bit structure at the locations of the perforations, and drilling inserts are positioned in each hole.