Hoang O Le

Address:

12206 Piping Rock Dr, Houston, TX 77077

VIN:

4JGBF71E27A139640

Make:

MERCEDES-BENZ

Model:

GL-CLASS

Year:

2007

Address:

2320 Skyline Dr, Milpitas, CA 95035

Phone:

(408)7620451

VIN:

5UMBT93527LY53547

Make:

BMW

Model:

Z4 M

Year:

2007

US Patent:

6383990, May 7, 2002

Filed:

Dec 3, 1999

Appl. No.:

09/454687

Inventors:

Jeffrey C. Dawson - Spring TX
Hoang Van Le - Houston TX
Subramanian Kesavan - The Woodlands TX

Assignee:

BJ Services Company - Houston TX

International Classification:

C09K 300

US Classification:

507209, 507211, 507240, 507271, 507922, 166308

Abstract:

Methods are provided for fracturing subterranean formations using fluids having substantially reduced polymer loadings that have performance equivalent to conventional fluids. Reduced polymer loadings provide significant advantages such as reduced treatment costs and less damage to the fracture sand pack and surrounding subterranean formations.

US Patent:

6387853, May 14, 2002

Filed:

Mar 27, 1998

Appl. No.:

09/049610

Inventors:

Jeffrey C. Dawson - Spring TX
Subramanian Kesavan - Woodlands TX
Hoang V. Le - Houston TX

Assignee:

BJ Services Company - Houston TX

International Classification:

C09K 300

US Classification:

507211, 507209, 507212, 507214, 507217, 507922, 507230, 536108, 536110, 536 63, 536123, 5361231, 525 58, 525 61

Abstract:

Polymers are derivatized and then may be introduced into a wellbore, such as in a hydraulic fracturing treatment. A polymer may be a guar powder that is mixed with a organic solvent and derivatized using a derivatizing agent, such as sodium chloroacetate. The polymer is typically derivatized in bulk prior to introduction into the wellbore. The derivatized polymer may be hydrated and/or crosslinked prior to introduction into the wellbore.

US Patent:

6649572, Nov 18, 2003

Filed:

Feb 15, 2001

Appl. No.:

09/784695

Inventors:

Jeffrey C. Dawson - Spring TX
Hoang Van Le - Houston TX
Subramanian Kesavan - The Woodlands TX

Assignee:

B J Services Company - Houston TX

International Classification:

C09K 300

US Classification:

507209, 507211, 507240, 507271, 507903, 507922, 166308

Abstract:

Methods are provided for fracturing subterranean formations using fluids having substantially reduced polymer loadings that have performance equivalent to conventional fluids. Reduced polymer loadings provide significant advantages such as reduced treatment costs and less damage to the fracture sand pack and surrounding subterranean formations.

US Patent:

6767868, Jul 27, 2004

Filed:

Feb 22, 2001

Appl. No.:

09/791042

Inventors:

Jeffrey Dawson - Spring TX
Subramanian Kesavan - East Windsor NJ
Hoang Van Le - Spring TX

Assignee:

BJ Services Company - Houston TX

International Classification:

C09K 300

US Classification:

507236, 507237, 507209, 507211, 507241, 507271, 507902, 507922, 166308

Abstract:

A method of fracturing a zone of a subterranean formation penetrated by a well bore is shown in which a gelable fracturing fluid is formed by combining an aqueous base fluid and a hydratable polymer. A transition metal crosslinker is added to the aqueous base fluid for crosslinking the hydratable polymer to form a gelled fluid of sufficient viscosity to facilitate fracturing of the formation. A proppant can also be added to the gelable fracturing fluid. The gelled fluid and proppant are then injected into the well bore and into contact with the formation under sufficient pressure to fracture the formation. The gelable fracturing fluid has incorporated therein a delayed release breaker comprising a complex multivalent chelating agent that is released slowly over a period of time to compete with the polymer for the transition metal crosslinker, thereby reducing the viscosity of the fluid.

US Patent:

6793018, Sep 21, 2004

Filed:

Jan 8, 2002

Appl. No.:

10/041511

Inventors:

Jeffrey C. Dawson - Spring TX
Hoang Van Le - Spring TX

Assignee:

BJ Services Company - Houston TX

International Classification:

E21B 4326

US Classification:

166300, 166308, 507211

Abstract:

A well treatment fluid composition comprises a solvent (such as water), a polymer soluble or hydratable in the solvent, a crosslinking agent, an inorganic breaking agent, and an ester compound. Preferably, the hydratable polymer is a polysaccharide, such as galactomannan, cellulose, or derivatives thereof. The crosslinking agent is preferably a borate, titanate, or zirconium-containing compound. The inorganic breaking agent is preferably a metal-based oxidizing agent, such as an alkaline earth metal or transition metal-based oxidizing agent. The ester compound is preferably an ester of polycarboxylic acid, such as an ester of oxalate, citrate, or ethylenediamine tetraacetate. One example of a suitable ester compound is acetyl triethyl citrate.

US Patent:

6844296, Jan 18, 2005

Filed:

Jun 21, 2002

Appl. No.:

10/177983

Inventors:

Jeffrey C. Dawson - Spring TX, US
Hoang Van Le - Spring TX, US

Assignee:

BJ Services Company - Houston TX

International Classification:

E21B 4326
C09K 300

US Classification:

507211, 507209, 507273, 507275, 507903, 507922, 1663085

Abstract:

Fracturing fluid compositions and methods for their preparation and use are disclosed. The compositions are useful in the oil and gas drilling operations, as well as in gravel packing operations, water blocking, temporary plugging for purposes of wellbore isolation and/or fluid loss control, and other uses. The compositions comprise a liquid, a polymer soluble in the liquid, having a degree of substitution of ionic groups of about 0. 01 to about 0. 1; and a crosslinking agent capable of increasing the viscosity of the fracturing fluid by crosslinking the polymer in liquid.

US Patent:

6983801, Jan 10, 2006

Filed:

Aug 23, 2004

Appl. No.:

10/923930

Inventors:

Jeffrey C. Dawson - Spring TX, US
Hoang Van Le - Spring TX, US

Assignee:

BJ Services Company - Houston TX

International Classification:

E21B 43/26

US Classification:

166300, 166308, 507211, 507267

Abstract:

A well treatment fluid composition comprises a solvent (such as water), a polymer soluble or hydratable in the solvent, a crosslinking agent, an inorganic breaking agent, and an ester compound. Preferably, the hydratable polymer is a polysaccharide, such as galactomannan, cellulose, or derivatives thereof. The crosslinking agent is preferably a borate, titanate, or zirconium-containing compound. The inorganic breaking agent is preferably a metal-based oxidizing agent, such as an alkaline earth metal or transition metal-based oxidizing agent. The ester compound is preferably an ester of polycarboxylic acid, such as an ester of oxalate, citrate, or ethylenediamine tetraacetate. One example of a suitable ester compound is acetyl triethyl citrate.

US Patent:

7012044, Mar 14, 2006

Filed:

Sep 5, 2003

Appl. No.:

10/655907

Inventors:

Jeffrey C. Dawson - Spring TX, US
Hoang Van Le - Houston TX, US
Subramanian Kesavan - The Woodlands TX, US

Assignee:

BJ Services Company - Houston TX

International Classification:

E21B 43/26
C09K 3/00

US Classification:

507211, 507209, 507240, 507271, 507903, 507922, 1663082, 1663083, 1663085

Abstract:

Methods are provided for fracturing subterranean formations using fluids having substantially reduced polymer loadings that have performance equivalent to conventional fluids. Reduced polymer loadings provide significant advantages such as reduced treatment costs and less damage to the fracture sand pack and surrounding subterranean formations.