Ashok K Santra

US Patent:

7150321, Dec 19, 2006

Filed:

Dec 17, 2003

Appl. No.:

10/738199

Inventors:

Karen Luke - Duncan OK, US
Russell M. Fitzgerald - Velma OK, US
Frank Zamora - Duncan OK, US
Ashok K. Santra - Duncan OK, US

Assignee:

Halliburton Energy Services, Inc. - Duncan OK

International Classification:

E21B 33/16
E21B 33/138
C09K 7/02
C09K 7/06

US Classification:

166291, 166292, 166300, 175 64, 175 72, 507269, 507277, 507925

Abstract:

Methods and compositions for wellbore treating fluids, especially settable spotting fluids, that include zeolite and at least one carrier fluid.

US Patent:

7228905, Jun 12, 2007

Filed:

Jan 24, 2006

Appl. No.:

11/338485

Inventors:

Ashok K. Santra - Duncan OK, US
Karen Luke - Duncan OK, US

International Classification:

E21B 33/138
C09K 8/42

US Classification:

166294, 166300, 175 72

Abstract:

Methods for performing wellbore operations using a treating fluid that includes zeolite, an activator, and an organic acid or salt thereof. The treating fluid used in the methods includes a zeolite having a mean particle size that is less than or equal to 100 microns.

US Patent:

7290613, Nov 6, 2007

Filed:

Oct 15, 2004

Appl. No.:

10/966937

Inventors:

Ashok K. Santra - Duncan OK, US
B. Raghava Reddy - Duncan OK, US
Russell M. Fitzgerald - Waurika OK, US

Assignee:

Halliburton Energy Services, Inc. - Duncan OK

International Classification:

E21B 33/138

US Classification:

166294

Abstract:

A method of servicing a wellbore that penetrates a subterranean formation includes displacing a cement composition comprising an aromatic sulfonated polymer into the wellbore and allowing the cement composition to set. In an embodiment, a transition time of the cement composition is less than or equal to about 60 minutes, alternatively less than or equal to about 50 minutes, less than or equal to about 40 minutes, less than or equal to about 30 minutes, less than or equal to about 20 minutes, or less than or equal to about 10 minutes. Thus, the transition time may be short enough to inhibit a substantial amount of gas migration into the cement composition before it sets. In yet another embodiment, the cement composition exhibits a viscosity that increases from a value of 35 Bc (Bearden units) to about 100 Bc in about 10 minutes or less when the cement composition sets.

US Patent:

7297664, Nov 20, 2007

Filed:

Jul 28, 2004

Appl. No.:

10/901507

Inventors:

Ashok K. Santra - Duncan OK, US
Karen Luke - Duncan OK, US
B. Raghava Reddy - Duncan OK, US

Assignee:

Halliburton Energy Services, Inc. - Duncan OK

International Classification:

C09K 8/74
E21B 43/00

US Classification:

507269, 507207, 507274, 507276, 166285, 166293

Abstract:

Zeolite and Class F fly ash compositions are provided for use as cement-free settable fluids such as settable spotting fluids and cementitious compositions.

US Patent:

7325611, Feb 5, 2008

Filed:

Mar 9, 2006

Appl. No.:

11/372001

Inventors:

Ashok K. Santra - Duncan OK, US
Mfon Anita - Duncan OK, US
B. Raghava Reddy - Duncan OK, US

Assignee:

Halliburton Energy Services, Inc. - Duncan OK

International Classification:

E21B 33/13

US Classification:

166293

Abstract:

A method of cementing a wellbore comprising preparing a cement composition comprising a water-soluble aromatic sulfonated polymer, and placing the cement composition into the wellbore, wherein the cement composition develops a compressive strength of greater than about zero in less time than a similar cement composition having a comparable thickening time and lacking a water-soluble aromatic sulfonated polymer. A cement composition comprising a water-soluble aromatic sulfonated polymer, wherein the cement composition develops a compressive strength of greater than about zero in less time than a similar cement composition having comparable thickening time and lacking a water-soluble aromatic sulfonated polymer.

US Patent:

7328756, Feb 12, 2008

Filed:

Sep 22, 2004

Appl. No.:

10/946671

Inventors:

B. Raghav Reddy - Duncan OK, US
Anthony V. Palmer - Ardmore OK, US
Ashok K. Santra - Duncan OK, US

Assignee:

Halliburton Energy Serivces, Inc. - Duncan OK

International Classification:

C09K 8/02

US Classification:

175 72

Abstract:

Settable fluids comprising particle-size distribution-adjusting agents, and methods of using such settable fluids in subterranean and surface applications are provided. In certain exemplary embodiments, the settable fluid comprises a cement, a set retarder, and a particle-size distribution-adjusting agent. Exemplary methods include, but are not limited to, methods of drilling with the settable fluids, methods of cementing with the settable fluids, and methods of using a settable fluid to displace another fluid from a well bore in a subterranean formation.

US Patent:

7338925, Mar 4, 2008

Filed:

Jan 24, 2006

Appl. No.:

11/338576

Inventors:

Ashok K. Santra - Duncan OK, US
Karen Luke - Duncan OK, US

Assignee:

Halliburton Energy Services, Inc. - Duncan OK

International Classification:

C09K 8/86
E21B 33/13

US Classification:

507267, 507140, 507145, 507260, 507269, 507277, 166292, 166300

Abstract:

Wellbore treating fluids that include zeolite, an activator, and an organic acid or salt thereof are provided.

US Patent:

7350574, Apr 1, 2008

Filed:

Jun 22, 2005

Appl. No.:

11/158531

Inventors:

Ashok K. Santra - Duncan OK, US
Russell M. Fitzgerald - Waurika OK, US

Assignee:

Halliburton Energy Services, Inc. - Duncan OK

International Classification:

E21B 33/13
E21B 33/14

US Classification:

166293, 166292, 166294, 166295, 106727, 106728, 106808, 106823, 524 2

Abstract:

Methods of retarding the setting of a cement composition comprise including one or more secondary amines substituted with a carboxyl group or salts thereof (e. g. , 3-hydroxy N,N′-iminodisuccinic acid) in the cement composition. The inclusion of such materials in cement compositions may be highly beneficial. In wellbores having BHCT's of less than or equal to about 250 F. , the use of the secondary amine as the set retarder ensures that the thickening time of the cement composition is sufficient to allow the cement composition to be pumped to its desired downhole location. Further, the secondary amine may be used in combination with conventional set retarders to enhance the ability of those retarders to increase the thickening time of the cement composition at higher BHCT's, e. g. , from about 250 F. to about 525 F.

Address:

3 S Victoriana Cir, Spring, TX 77389

VIN:

5FNYF3H21BB058485

Make:

HONDA

Model:

PILOT

Year:

2011