David A Holcomb

US Patent:

7380606, Jun 3, 2008

Filed:

Feb 28, 2003

Appl. No.:

10/377322

Inventors:

John T. Pursley - Highlands Ranch CO, US
David L. Holcomb - Golden CO, US
Glenn S. Penny - Marlow OK, US

Assignee:

CESI Chemical, a Flotek Company - Duncan OK

International Classification:

E21B 37/00
E21B 37/06
E21B 43/00
C09K 8/00
C09K 8/52

US Classification:

1663051, 507200, 507203, 507261, 507263, 507265, 507266, 507267

Abstract:

Disclosed is a microemulsion well treatment microemulsion that is formed by combining a solvent-surfactant blend with a carrier fluid. In preferred embodiments, the solvent-surfactant blend includes a surfactant and a solvent selected from the group consisting of terpenes and alkyl or aryl esters of short chain alcohols. The disclosed well treatment microemulsion can be used in well remediation, stimulation and hydrogen sulfide mitigation operations. Additionally, the well treatment microemulsion can be used in the production of benzothiophenes through interaction with hydrogen sulfide.

US Patent:

7544639, Jun 9, 2009

Filed:

May 5, 2005

Appl. No.:

11/122681

Inventors:

John T. Pursley - Highlands Ranch CO, US
David L. Holcomb - Golden CO, US
Glenn S. Penny - Marlow OK, US

Assignee:

CESt Chemical - Duncan OK

International Classification:

C09K 8/528
B01D 19/04
E21B 21/00

US Classification:

507263, 95235, 1663051, 166312, 507927, 516 72, 516 76

Abstract:

Disclosed is a method for the treatment of hydrogen sulfide. The method preferably includes forming a solvent-surfactant blend, preparing a microemulsion by combining the solvent-surfactant blend with a carrier fluid and contacting the hydrogen sulfide with the microemulsion. In preferred embodiments, the solvent-surfactant blend includes a surfactant and a solvent selected from the group consisting of terpenes and alkyl or aryl esters of short chain alcohols.

US Patent:

20080287324, Nov 20, 2008

Filed:

May 30, 2008

Appl. No.:

12/156201

Inventors:

John Thomas Pursley - Castle Rock CO, US
David L. Holcomb - Golden CO, US
Glenn S. Penny - The Woodlands TX, US

Assignee:

CESI Chemical, Inc., A Flotek Company - The Woodlands TX

International Classification:

C09K 8/52

US Classification:

507218

Abstract:

Disclosed is a method for treating an oil or gas well having a wellbore that includes the steps of forming a solvent-surfactant blend by combining a solvent and a surfactant, adding a diluent to the solvent-surfactant blend to form an emulsified solvent-surfactant blend; combining the emulsified solvent-surfactant blend with a water-based carrier fluid to form a well treatment microemulsion, and injecting the well treatment microemulsion into the oil or gas well. In a preferred embodiment, the step of forming a solvent-surfactant blend includes combining a surfactant with a solvent selected from the group consisting of terpenes and alkyl or aryl esters of short chain alcohols.

US Patent:

20100096139, Apr 22, 2010

Filed:

Oct 15, 2009

Appl. No.:

12/579947

Inventors:

David L. Holcomb - Golden CO, US
Darsh T. Wasan - Darien IL, US
Alex D. Nikolov - Chicago IL, US

Assignee:

FRAC TECH SERVICES, LTD. - Cisco TX
ILLINOIS INSTITUTE OF TECHNOLOGY - Chicago IL

International Classification:

E21B 43/26
C09K 8/584

US Classification:

1663081, 507259

Abstract:

Methods are provided for improved intervention processes in a well. Nanoparticles are added to a fluid containing a wetting agent to enhance wetting of solid surfaces in and around the well, leading to improved flow capacity of the well.

US Patent:

20120168165, Jul 5, 2012

Filed:

Mar 21, 2012

Appl. No.:

13/425620

Inventors:

David L. Holcomb - Golden CO, US
Darsh T. Wasan - Darien IL, US
Alex D. Nikolov - Chicago IL, US

Assignee:

ILLINOIS INSTITUTE OF TECHNOLOGY - Chicago IL
FTS INTERNATIONAL SERVICES, LLC - Fort Worth TX

International Classification:

E21B 43/16

US Classification:

1663051, 977773

Abstract:

Nanoparticles are added to a fluid containing a wetting agent to enhance wetting of solid surfaces in and around the well and removing a water-block from the well. The wetting agent and nanoparticles combine to produce a wetting of the surfaces of the rock that allows recovery of the excess water near the well (water block).

US Patent:

20120175120, Jul 12, 2012

Filed:

Mar 21, 2012

Appl. No.:

13/425630

Inventors:

David L. Holcomb - Golden CO, US
Darsh T. Wasan - Darien IL, US
Alex D. Nikolov - Chicago IL, US

Assignee:

ILLINOIS INSTITUTE OF TECHNOLOGY - Chicago IL
FTS INTERNATIONAL SERVICES, LLC - Fort Worth TX

International Classification:

E21B 43/22
B82Y 30/00

US Classification:

166307, 977902

Abstract:

Nanoparticles are added to a fluid containing a wetting agent and the fluid is pumped down a well to enhance wetting of solid surfaces in and around the well before pumping an acid solution down the well. After acid is pumped, a fluid containing nanoparticles and wetting agent is again pumped down the well, leading to improved flow capacity of the well.