Ming Feng Zhang

Address:

9311 Stroud Dr, Houston, TX 77036

VIN:

JTEZU14R378089970

Make:

TOYOTA

Model:

4RUNNER

Year:

2007

Address:

6534 Grandvale Dr, Houston, TX 77072

VIN:

4T1BE46K17U647547

Make:

TOYOTA

Model:

CAMRY/LE/XLE/SE

Year:

2007

Address:

1 Hermann Museum Cir Dr APT 3020, Houston, TX 77004

VIN:

4T1BE46K27U135618

Make:

TOYOTA

Model:

CAMRY

Year:

2007

US Patent:

20120312602, Dec 13, 2012

Filed:

Jun 8, 2012

Appl. No.:

13/491991

Inventors:

Ming Zhang - Spring TX, US
Qingxiu Li - Spring TX, US
Zhou Yong - Spring TX, US

Assignee:

SMITH INTERNATIONAL, INC. - Houston TX

International Classification:

E21B 10/08

US Classification:

175371

Abstract:

A composite journal seal for use in a roller cone drill bit may include a substantially ring shaped elastomeric body having at least two axial, radial, or canted sealing surfaces, at least one of the at least two axial, radial, or canted sealing surface being a dynamic sealing surface, and at least one reinforcement layer embedded at least 0.005 inches from the at least one dynamic sealing surface.

US Patent:

20160032710, Feb 4, 2016

Filed:

Mar 13, 2014

Appl. No.:

14/777078

Inventors:

- Houston TX, US
James Layne Larsen - Spring TX, US
Tommy G. Ray - Houston TX, US
Dwayne P. Terracina - Spring TX, US
Rui Gao - Spring TX, US
Jennifer L. Pereira - The Woodlands TX, US
Weixiong Wang - Houston TX, US
Ming Zhang - Spring TX, US
Zhenbi Su - Spring TX, US
Baozhong Yang - Pearland TX, US
Siqi Xu - Houston TX, US
Sudarsanam Chellappa - Houston TX, US
Vishal Saheta - Houston TX, US
Robert Utter - Sugar Land TX, US

Assignee:

SMITH INTERNATIONAL, INC. - Houston TX

International Classification:

E21B 47/08

Abstract:

A downhole tool is disclosed for measuring wellbore geometry. The downhole tool may include a body with a bore extending at least partially therethrough. The body may include a radial recess. An arm may be movably coupled to the body at a first end portion of the arm. The arm may be within the radial recess in a retracted position and be pivotable in a radially-outward direction relative to the body to an expanded position. A measurement device coupled to the body may measure the pivoting motion of the arm. A piston coupled to the body may be movably coupled to a second end portion of the arm, and the piston may respond to changes in hydraulic pressure to pivot the arm between the retracted position and the expanded position.