Keith Ivar Sharp

US Patent:

20110082057, Apr 7, 2011

Filed:

Oct 5, 2009

Appl. No.:

12/573544

Inventors:

Jinguo ZHANG - Katy TX, US
Paul H. Javora - Spring TX, US
Keith W. Sharp - Houston TX, US

International Classification:

C09K 8/52
C09K 8/62
C09K 8/10
C09K 8/80
C09K 8/08

US Classification:

507 90, 507219, 523130, 507211, 507214, 507216, 507217, 507215

Abstract:

A method for forming a well and pipeline treating fluid is provided. The method comprises combining a cross-linkable gelling polymer, a scavenging compound capable of reducing a concentration of divalent and polyvalent metal ions and salts thereof available for reaction, a hydration solvent and optionally an acid. The resulting mixture has a pH ranging from about 3 to about 7 and a first viscosity. The mixture is maintained at conditions suitable for hydration of the cross-linkable gelling polymer until the mixture has a second viscosity that is greater than the first viscosity. The mixture is combined with an aqueous based fluid and at least one cross-linking agent. The pH of the mixture is raised to a sufficient level to allow a desired degree of cross-linking to occur. Other methods, a well and pipeline treating gel and a well and pipeline treating fluid are also provided.

US Patent:

46221530, Nov 11, 1986

Filed:

Jan 25, 1980

Appl. No.:

6/115405

Inventors:

Kenneth E. Watson - Houston TX
Keith W. Sharp - Houston TX

Assignee:

NL Industries, Inc. - New York NY

International Classification:

C09K 702
E21B 4300

US Classification:

252 8514

Abstract:

A liquid polymer containing composition, useful as a thickening agent for aqueous systems, containing hydroxyethyl cellulose, a hydrophobic liquid medium in which the hydroxyethyl cellulose is substantially non-swellable and a gelling agent for thickening the hydrophobic liquid.

US Patent:

46701648, Jun 2, 1987

Filed:

Apr 3, 1986

Appl. No.:

6/847946

Inventors:

Kenneth E. Watson - Houston TX
Keith W. Sharp - Houston TX

Assignee:

NL Industries, Inc. - New York NY

International Classification:

C09K 702
E21B 4300

US Classification:

252 8511

Abstract:

A liquid polymer containing composition, useful as a thickening agent for aqueous systems, containing hydroxyethyl cellulose, a hydrophobic liquid medium in which the hydroxyethyl cellulose is substantially non-swellable and a gelling agent for thickening the hydrophobic liquid.

US Patent:

61436984, Nov 7, 2000

Filed:

Dec 4, 1998

Appl. No.:

9/206077

Inventors:

Joseph R. Murphey - Spring TX
Jeffrey S. McKennis - The Woodlands TX
Keith W. Sharp - Houston TX

Assignee:

Tetra Technologies, Inc. - The Woodlands TX

International Classification:

C09K 702
E21B 2100
E21B 4304

US Classification:

507145

Abstract:

A method for removing filtercake from a subterranean borehole comprising drilling the borehole with a drilling fluid that includes additives to form a filtercake having an oxidation-degradable component, preferably a polysaccharide. The filtercake is contacted with a clear brine containing bromine or bromate generating agents to degrade the polymers within the filtercake. The brine contains bromide salts and an oxidant capable of delayed oxidation of the bromide to bromine at downhole conditions.

Address:

2702 Andrew Spg Ln, Spring, TX 77386

VIN:

1HD1CZ3487K438079

Make:

CADILLAC

Model:

ESCALADE ESV AWD 4DR

Year:

2007