Chad E Lucas

US Patent:

7607487, Oct 27, 2009

Filed:

Aug 26, 2005

Appl. No.:

11/213364

Inventors:

Chad Lucas - Missouri City TX, US
Oscar Rodriguez - League City TX, US

Assignee:

Schlumberger Technology Corporation - Sugar Land TX

International Classification:

E21B 33/12
E21B 34/12
E21B 23/06

US Classification:

166387, 166134, 166131, 166184, 166331

Abstract:

Packers and methods of using same are described. The packer includes a packer body, a slip to engage a casing of the well and a sealing element to seal an annulus of the well, a fluid bypass chamber adapted to allow fluid passage through the packer body during run in hole and in release position, and a re-settable mandrel slideably engaged with guide pins attached to the packer body and adapted to selectively open and close circulation paths upon actuation. This abstract allows a searcher or other reader to quickly ascertain the subject matter of the disclosure. It will not be used to interpret or limit the scope or meaning of the claims. 37 CFR 1. 72(b).

US Patent:

7735568, Jun 15, 2010

Filed:

Feb 28, 2007

Appl. No.:

11/679992

Inventors:

Zheng Rong Xu - Sugar Land TX, US
Chad Lucas - Missouri City TX, US
Richard Morrison - Sugar Land TX, US

Assignee:

Schlumberger Technology Corporation - Sugar Land TX

International Classification:

E21B 33/12

US Classification:

166387, 166202, 166187

Abstract:

The present invention provides a packer cup system for use inside a wellbore comprising a packer cup and a backup component coupled thereto. In one configuration, the backup component further comprises an angled support member and a rubber ring disposed between the angled support member and the packer cup. The support member is configured to facilitate uniform expansion of the rubber ring.

US Patent:

7823636, Nov 2, 2010

Filed:

Sep 10, 2007

Appl. No.:

11/852648

Inventors:

Chad M. Lucas - Missouri City TX, US

Assignee:

Schlumberger Technology Corporation - Sugar Land TX

International Classification:

E21B 33/12

US Classification:

166119, 166387

Abstract:

A packer includes first and second external seal elements. The first external seal element is adapted to form an annular seal in the well. The second external seal element is adapted to be moved in response to fluid in the well to produce a force to at least partially assist an operation of the packer.

US Patent:

7870895, Jan 18, 2011

Filed:

Aug 9, 2007

Appl. No.:

11/836371

Inventors:

Chad M. Lucas - Missouri City TX, US

Assignee:

Schlumberger Technology Corporation - Sugar Land TX

International Classification:

E21B 23/04

US Classification:

166 63, 166387

Abstract:

A packer includes a seal element and a piston. The piston compresses the seal element to form an annular seal in the well. A pressure wave, such as a pressure wave that is caused by a chemical reaction or the detonation of an explosive, is generated in the packer to at least partially assist an operation (the setting of a slip, setting of the seal element, etc. ) of the packer. In some implementations, the chemical reaction or explosive detonation occurs in response to a predetermined movement of the piston.

US Patent:

20060260820, Nov 23, 2006

Filed:

Apr 12, 2006

Appl. No.:

11/308617

Inventors:

John Whitsitt - Houston TX, US
Carlos Araque - Sugar Land TX, US
David Eslinger - Collinsville OK, US
Philippe Gambier - Houston TX, US
Dinesh Patel - Sugar Land TX, US
Chad Hardwick - West Columbia TX, US
Jason Jonas - Missouri City TX, US
Robert Divis - Houston TX, US
Randolph Sheffield - Sugar Land TX, US
Bryan White - Houston TX, US
Chad Lucas - Missouri City TX, US

Assignee:

SCHLUMBERGER TECHNOLOGY CORPORATION - Sugar Land TX

International Classification:

E21B 33/12

US Classification:

166387000, 166187000

Abstract:

Zonal isolation tools and methods of using same are described. The zonal isolation tools include a wellbore sealing member expandable by fluid pressure to contact a wellbore over an initial contact area, an inflation valve open during expansion of the sealing member to the initial contact area and closed upon the fluid pressure reaching a predetermined setting, a vent between the sealing member and a wellbore annulus adapted to open after the inflation valve is closed, and a compressive load imparted to the sealing member via a linear piston to achieve a sealing point at the leading edge of the sealing member. This abstract allows a searcher or other reader to quickly ascertain the subject matter of the disclosure. It will not be used to interpret or limit the scope or meaning of the claims.

US Patent:

20070056725, Mar 15, 2007

Filed:

Feb 28, 2006

Appl. No.:

11/363783

Inventors:

Chad Lucas - Missouri City TX, US
Oscar Rodriguez - League City TX, US
James Hendrickson - Sugar Land TX, US
Karen Grosser - Pearland TX, US
Reginald Francis - Katy TX, US

International Classification:

E21B 33/128

US Classification:

166179000, 277337000

Abstract:

A seal assembly is provided that includes an elastomeric portion; a primary extrusion barrier which reinforces the elastomeric portion; and a secondary extrusion barrier disposed between the elastomeric portion and the primary extrusion barrier to prevent entry of the elastomeric portion into open areas in the primary extrusion barrier.