Paul D Lord

US Patent:

6640898, Nov 4, 2003

Filed:

Mar 26, 2002

Appl. No.:

10/107888

Inventors:

Paul D. Lord - Duncan OK
John Terracina - Duncan OK
Billy Slabaugh - Marlow OK

Assignee:

Halliburton Energy Services, Inc. - Duncan OK

International Classification:

E21B 43267

US Classification:

166300, 166308, 507211, 507215, 507217, 507260, 507903

Abstract:

The present invention provides seawater-based cross-linked fracturing fluids and methods of preparing and using the fluids in fracturing subterranean formations penetrated by well bores and having temperatures above about 200Â F. The improved cross-linked fracturing fluids are basically comprised of a gelling agent, seawater present in an amount sufficient to hydrate the gelling agent and to form a gelled aqueous fluid, and a delayed cross-linking agent, capable of causing delayed cross-linking of the gelling agent in the gelled aqueous fluid at a pH below the threshold for precipitate formation in seawater.

US Patent:

6911419, Jun 28, 2005

Filed:

Aug 19, 2003

Appl. No.:

10/643519

Inventors:

Paul D. Lord - Duncan OK, US
John Terracina - Duncan OK, US
Billy Slabaugh - Marlow OK, US

Assignee:

Halliburton Energy Services, Inc. - Duncan OK

International Classification:

C09K003/00

US Classification:

507271, 507209, 507211, 507217, 507903, 507921, 507922

Abstract:

The present invention provides seawater-based cross-linked fracturing fluids and methods of preparing and using the fluids in fracturing subterranean formations penetrated by well bores and having temperatures above about 200 F. The improved cross-linked fracturing fluids are basically comprised of a gelling agent, seawater present in an amount sufficient to hydrate the gelling agent and to form a gelled aqueous fluid, and a delayed cross-linking agent, capable of causing delayed cross-linking of the gelling agent in the gelled aqueous fluid at a pH below the threshold for precipitate formation in seawater.

US Patent:

6923264, Aug 2, 2005

Filed:

Mar 5, 2003

Appl. No.:

10/379958

Inventors:

Billy F. Slabaugh - Marlow OK, US
Paul D. Lord - Duncan OK, US
John M. Wilson - Duncan OK, US

Assignee:

Halliburton Energy Services, Inc. - Duncan OK

International Classification:

E21B043/27

US Classification:

1663083, 1662801, 166307, 507241, 507256, 507269, 507921

Abstract:

A method of fracturing subterranean zones at temperature below about 200 F. wherein the fracturing fluid comprises water, a viscosity increasing gelling agent, a particulate proppant material, a delayed viscosity breaker for causing the fracturing fluid to revert to a thin fluid and a breaker activator comprising a mixture selected from the group of a mixture of cobaltous acetate and the sodium salt of ethylenediaminetetraacetic acid and a mixture of thioglycolic acid and sodium molybdate.

US Patent:

7165617, Jan 23, 2007

Filed:

Jul 27, 2004

Appl. No.:

10/899897

Inventors:

Paul D. Lord - Duncan OK, US
Rodney B. Waltman - Gretna LA, US
David W. Ritter - Katy TX, US
Sanjay Vitthal - Houston TX, US

Assignee:

Halliburton Energy Services, Inc. - Duncan OK

International Classification:

E21B 43/26

US Classification:

1663085, 1662802, 166283

Abstract:

In one embodiment, provided is a method of fracturing a portion of a subterranean formation that comprises providing a viscosified treatment fluid comprising a single salt aqueous fluid having a density of greater than 9 pounds per gallon and a crosslinked viscosifying agent, and contacting the portion of the subterranean formation with a viscosified treatment fluid so as to create or enhance one or more fractures therein, wherein the viscosified treatment fluid is introduced into a well bore that penetrates the portion of the subterranean formation to be fractured at a surface pressure of less than about 25,000 pounds per square inch. In other embodiments, provided are methods of frac packing a subterranean formation and methods of reducing a surface pressure needed to create one or more fractures in a portion of a subterranean formation.

US Patent:

7299876, Nov 27, 2007

Filed:

Mar 19, 2007

Appl. No.:

11/626195

Inventors:

Paul D. Lord - Duncan OK, US
Rodney B. Waltman - Gretna LA, US
David W. Ritter - Katy TX, US
Sanjay Vitthal - Houston TX, US

Assignee:

Halliburton Energy Services, Inc. - Duncan OK

International Classification:

E21B 43/26

US Classification:

1663085, 1662801, 166283

Abstract:

In one embodiment, provided is a method of fracturing a portion of a subterranean formation that comprises providing a viscosified treatment fluid comprising a single salt aqueous fluid having a density of greater than 9 pounds per gallon and a crosslinked viscosifying agent, and contacting the portion of the subterranean formation with a viscosified treatment fluid so as to create or enhance one or more fractures therein, wherein the viscosified treatment fluid is introduced into a well bore that penetrates the portion of the subterranean formation to be fractured at a surface pressure of less than about 25,000 pounds per square inch. In other embodiments, provided are methods of frac packing a subterranean formation and methods of reducing a surface pressure needed to create one or more fractures in a portion of a subterranean formation.

US Patent:

8408301, Apr 2, 2013

Filed:

May 20, 2010

Appl. No.:

12/783715

Inventors:

Paul D. Lord - Duncan OK, US
Ivan Suleiman - Duncan OK, US
John M. Terracina - Duncan OK, US
Rajendra A. Kalgaonkar - Pune, IN

Assignee:

Halliburton Energy Services, Inc. - Duncan OK

International Classification:

E21B 43/22
E21B 43/26
C09K 8/62
C09K 8/90

US Classification:

166279, 166283, 166300, 1663085, 507215, 507271, 507273

Abstract:

A method comprises providing a treatment fluid comprising a gelling agent, an aqueous base fluid, a buffer composition comprising a plurality of salts, and a crosslinking agent; and contacting a subterranean formation with the treatment fluid. The aqueous base fluid is preferably seawater and the buffer composition includes one or more salts present in the treatment fluid from about 1 to about 1000 pounds per gallon of treatment fluid.

US Patent:

8590621, Nov 26, 2013

Filed:

Apr 6, 2010

Appl. No.:

12/754721

Inventors:

Paul D. Lord - Duncan OK, US
Jimmie D. Weaver - Duncan OK, US
Ivan M. Suleiman - Duncan OK, US

Assignee:

Halliburton Energy Services, Inc. - Houston TX

International Classification:

E21B 43/26

US Classification:

1663051, 1663082

Abstract:

A method comprises providing a treatment fluid comprising an aqueous fluid, and a low-leakoff particulate, contacting a subterranean formation with the treatment fluid, and allowing the low-leakoff particulate to de-link so that at least a portion of the low-leakoff particulate enters the liquid phase. In some cases the treatment fluid comprises from about 5 to about 120 pounds of low-leakoff particulates per thousand gallons of treatment fluid.

US Patent:

20050164893, Jul 28, 2005

Filed:

Feb 4, 2005

Appl. No.:

11/051021

Inventors:

Billy Slabaugh - Marlow OK, US
Paul Lord - Duncan OK, US
John Wilson - Duncan OK, US

International Classification:

C09K007/00

US Classification:

507140000

Abstract:

This invention provides methods of fracturing subterranean zones, fracturing fluids and breaker activators for use in the fracturing fluids. The fracturing fluids are basically comprised of water, a gelling agent, a particulate proppant material, a delayed viscosity breaker and a breaker activator.