Quan H Nguyen

US Patent:

6336512, Jan 8, 2002

Filed:

Feb 1, 2000

Appl. No.:

09/495602

Inventors:

Michael A. Siracki - The Woodlands TX
Steven W. Peterson - The Woodlands TX
Chris E. Cawthorne - The Woodlands TX
Quan V. Nguyen - Houston TX

Assignee:

Smith International, Inc. - Houston TX

International Classification:

E21B 1008

US Classification:

175371, 175331, 384 94

Abstract:

A drill bit having a canted or non-canted leg backface, a canted or non-canted seal in the interface between the cone backface and the shirttail, and a canted seal that can be semi-encapsulated so that there is no straight-line path across the seal.

US Patent:

6367568, Apr 9, 2002

Filed:

May 15, 2001

Appl. No.:

09/858138

Inventors:

Stephen C. Steinke - The Woodlands TX
Gary R. Portwood - Kingwood TX
Gary E. Garcia - The Woodlands TX
David P. Moran - The Woodlands TX
Quan V. Nguyen - Santa Ana CA

Assignee:

Smith International, Inc. - Houston TX

International Classification:

E21B 1008

US Classification:

175331, 175336, 175341, 1754201, 175430, 175432

Abstract:

A cutter element for a drill bit. The cutter element has a base portion and an extending portion and the extending portion has either a zero draft or a negative draft with respect to the base portion. The non-positive draft allows more of the borehole bottom to be scraped using fewer cutter elements. The cutter elements having non-positive draft can be either tungsten carbide inserts or steel teeth.

US Patent:

6533051, Mar 18, 2003

Filed:

Sep 7, 1999

Appl. No.:

09/390717

Inventors:

Amardeep Singh - Houston TX
Dennis Cisneros - Kingwood TX
Sujian J. Huang - The Woodlands TX
Quan V. Nguyen - Houston TX

Assignee:

Smith International, Inc. - Houston TX

International Classification:

E21B 1022

US Classification:

175371, 175365

Abstract:

A roller cone drill bit includes a bit body adapted to be rotated about a longitudinal axis. At least one leg which terminates in a shirttail portion depends from the bit body. The shirttail portion defines a first end face having a first circumferential groove thereon. The first circumferential groove has a radius equal to the radius of a tip of the shirttail portion. A journal is cantilevered from the leg, and a roller cone is rotatably mounted on the journal. The roller cone has a second end face adjacent to the first end face. A second circumferential groove is formed on the second end face.

US Patent:

6561293, May 13, 2003

Filed:

May 15, 2001

Appl. No.:

09/858160

Inventors:

James C. Minikus - Spring TX
Chris E. Cawthorne - The Woodlands TX
Stephen C. Steinke - The Woodlands TX
Gary R. Portwood - Kingwood TX
Gary E. Garcia - The Woodlands TX
David P. Moran - The Woodlands TX
Quan V. Nguyen - Houston TX

Assignee:

Smith International, Inc. - Houston TX

International Classification:

E21B 1008

US Classification:

1754201, 175430

Abstract:

A cutter element for a drill bit has a non-rectilinear crest. The cutter element has a base portion and an extending portion and the extending portion has either a zero draft or a negative draft with respect to the base portion. The non-positive draft allows more of the borehole bottom to be scraped using fewer cutter elements. The cutter elements having non-positive draft can be either tungsten carbide inserts or steel teeth.

US Patent:

6571887, Jun 3, 2003

Filed:

Apr 12, 2000

Appl. No.:

09/547691

Inventors:

Quan V. Nguyen - Houston TX
James L. Larsen - Spring TX
Michael A. Siracki - The Woodlands TX
Chris E. Cawthorne - The Woodlands TX

Assignee:

SII Smith International, Inc. - Houston TX

International Classification:

E21B 1018

US Classification:

175 57, 175340, 175424

Abstract:

A drill bit having one or more nozzle retention bodies attached by a single orientation mounting is disclosed, as is the associated method for its manufacture. The upper end of the nozzle retention body has a fluid inlet in communication with the internal fluid plenum of the drill bit, and the lower end of the nozzle retention body includes a fluid outlet that defines an exit flow angle. The exit flow angle is angularly disposed from the longitudinal axis of the drill bit. The nozzle retention body may advantageously be chamfered or the like to provide a reduced cross-sectional area at the lower end of the nozzle retention body. The outer surface of the nozzle retention body (and attached hardened elements) may extend substantially to gage, or may fall short of that diameter.

US Patent:

6688410, Feb 10, 2004

Filed:

Jun 7, 2000

Appl. No.:

09/589260

Inventors:

Amardeep Singh - Houston TX
Quan V. Nguyen - Houston TX
Sujian Huang - The Woodlands TX

Assignee:

Smith International, Inc. - Houston TX

International Classification:

E21B 1046

US Classification:

175374, 175339, 175408

Abstract:

A novel rolling cone rock bit includes a plurality of PDC or other cutters mounted to the leg of the drill bit and positioned to cut the troublesome corner of the bottomhole. The plurality of cutters may be the primary cutting component at gage diameter, or may be redundant to gage teeth on a rolling cutter that cut to gage diameter. Consequently, the occurrence of undergage drilling from the wear and failure of the gage row on a rolling cutter is lessened. Another inventive feature is the inclusion of a mud ramp that creates a large junk slot from the borehole bottom up the drill bit. The resulting pumping action of the drill bit ramp speeds up the removal of chips or drilling cuttings from the bottom of the borehole, reduces the level of hydrostatic pressure at the bottom of the borehole and minimizes the wearing effect of cone inserts regrinding damaging drill cuttings.

US Patent:

6782959, Aug 31, 2004

Filed:

May 13, 2003

Appl. No.:

10/436709

Inventors:

James C. Minikus - Spring TX
Chris E. Cawthorne - The Woodlands TX
Stephen C. Steinke - The Woodlands TX
Gary R. Portwood - Kingwood TX
Gary E. Garcia - The Woodlands TX
David P. Moran - The Woodlands TX
Quan V. Nguyen - Houston TX

Assignee:

Smith International, Inc. - Houston TX

International Classification:

E21B 1008

US Classification:

1754201, 175430

Abstract:

A cutter element for a drill bit has a crest that defines a crest line. The crest can be non-rectilinear. The crest line of each cutter element defines an angle with respect to the axis of the rolling cone on which the cutter element is mounted. The cutter elements define different angles with respect to the cone axis and with respect to each other.

US Patent:

7059430, Jun 13, 2006

Filed:

Feb 21, 2002

Appl. No.:

10/081275

Inventors:

Amardeep Singh - Houston TX, US
Quan V. Nguyen - Houston TX, US
Sujian Huang - The Woodlands TX, US

Assignee:

Smith International, Inc. - Houston TX

International Classification:

E21B 10/18

US Classification:

175339, 175340

Abstract:

A novel rolling cone rock bit includes a plurality of PDC or other cutters mounted to the leg of the drill bit and positioned to cut the troublesome corner of the bottomhole. The plurality of cutters may be the primary cutting component at gage diameter, or may be redundant to gage teeth on a rolling cutter that cut to gage diameter. Consequently, the occurrence of undergage drilling from the wear and failure of the gage row on a rolling cutter is lessened. Another inventive feature is the inclusion of a mud ramp that creates a large junk slot from the borehole bottom up the drill bit. The resulting pumping action of the drill bit ramp speeds up the removal of chips or drilling cuttings from the bottom of the borehole, reduces the level of hydrostatic pressure at the bottom of the borehole and minimizes the wearing effect of cone inserts regrinding damaging drill cuttings.

Address:

11111 E Cyrus Dr, Houston, TX 77064

VIN:

WDDNG7BB2AA341832

Make:

MERCEDES-BENZ

Model:

S-CLASS

Year:

2010

Address:

7215 Avocet Ln, Houston, TX 77040

VIN:

4T3ZK3BB9AU031522

Make:

TOYOTA

Model:

VENZA

Year:

2010

Address:

12815 Blackbrook Ln, Houston, TX 77041

Phone:

(713)8566914

VIN:

4T1BK46K77U527700

Make:

TOYOTA

Model:

CAMRY

Year:

2007

Address:

8806 Bold Frst Dr APT D, Houston, TX 77088

VIN:

4T1BE46K57U528884

Make:

TOYOTA

Model:

CAMRY

Year:

2007