Stephen C Peters

US Patent:

20150267479, Sep 24, 2015

Filed:

Mar 18, 2014

Appl. No.:

14/218269

Inventors:

- Houston TX, US
David Lawrence Ford - Houston TX, US
Stephen David Peters - Houston TX, US

Assignee:

Vetco Gray Inc. - Houston TX

International Classification:

E21B 17/10
E21B 19/06
E21B 33/068

Abstract:

A wear bushing assembly protects and locks down a hanger in a wellhead housing; and which includes a wear bushing body that inserts into a wear bushing sleeve. A lock ring extends into registered recesses on the body and sleeve to couple together the body and sleeve. The wellhead housing has a profiled recess circumscribing its inner surface. A lockdown ring selectively mates with the profiled recess; and when mated is in interfering contact with an upper surface of the wear bushing sleeve, thereby coupling the sleeve to the wellhead housing. The sleeve outer surface is profiled to interfere with upward movement of the hanger, so that force is transferred from the hanger to the housing through the sleeve which locks down the housing.

US Patent:

20140296310, Oct 2, 2014

Filed:

Aug 16, 2012

Appl. No.:

14/238570

Inventors:

Deepu Alex - Washington DC, US
Richard Calderone - Chevy Chase MD, US
Stephen Peters - Washington DC, US

Assignee:

GEORGETOWN UNIVERSITY - Washington DC

International Classification:

C07D 275/04

US Classification:

514373

Abstract:

Methods of treating, preventing and ameliorating bacteria! infections with 1,2-benzisothiazolinone and isoindolinone derivatives are disclosed. Pharmaceutical compositions containing 1,2-benzisothiazolinone and isoindolinone derivatives are useful for treating bacteria! infections caused by drug resistant strains of bacteria, including but not limited to methicillin and vancomycin bacterial organisms.

US Patent:

20140166308, Jun 19, 2014

Filed:

Dec 17, 2012

Appl. No.:

13/716960

Inventors:

- Houston TX, US
John E. Nelson - Houston TX, US
Chau Hoang - Houston TX, US
Daniel C. Benson - Houston TX, US
Stephen D. Peters - Houston TX, US

Assignee:

Vetco Gray Inc. - Houston TX

International Classification:

E21B 17/046

US Classification:

166380, 1662426

Abstract:

A key assembly is press fit into an annular space between a box and pin member to resist relative rotation of the box and pin members. The key assembly includes wedge like members that contact one another along complementary tapered surfaces, and when in contact generate radial forces into the box and pin member to secure the connection between the box and pin. The outer wedge is inserted first into the annular space between the box and pin members, and has rows of elongate teeth that project radially outward into contact with an inner surface of the box member. Because the outer wedge is pushed radially outward against the box member rather than axially sliding therebetween, the teeth protrude into the surface of the box member thereby increasing the anti-rotation force created by the outer wedge.

US Patent:

20140125053, May 8, 2014

Filed:

Nov 8, 2012

Appl. No.:

13/672443

Inventors:

Vetco Gray Inc. - , US
Thomas Lowell Steen - Houston TX, US
Nicholas Peter Gette - Houston TX, US
David Lawrence Ford - Houston TX, US
Benjamin Michael Snyder - Houston TX, US
Stephen David Peters - Houston TX, US
Ebony LaShaun Towns - Houston TX, US
Roberto Jose Manzano - Houston TX, US

Assignee:

Vetco Gray Inc. - Houston TX

International Classification:

F16L 15/08

US Classification:

285333

Abstract:

A broach style anti-rotation device for connected tubular members is described. In embodiments, the broach tool is inserted into a slot in an outer diameter surface of the pin, and teeth of the broach, which have a successively greater height when moving from the front to the tail of the broach, cut a slot in a surface of the box. Sidewalls of the broach and its teeth engage shoulders of each slot to prevent the rotation of the tubular members relative to each other.