HOANG LE, M.D.
Radiology at Astoria Blvd, Houston, TX

6383990, May 7, 2002

Dec 3, 1999

09/454687

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

BJ Services Company - Houston TX

C09K 300

507209, 507211, 507240, 507271, 507922, 166308

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.

5465792, Nov 14, 1995

Jul 20, 1994

8/277955

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

BJ Services Company - Houston TX

E21B 33138

166295

The production of excessive water in oil and gas wells and other subterranean formations is reduced by introducing a hydrocarbon fluid containing dispersed superabsorbing particles formed using invert emulsion polymerization techniques wherein the superabsorbing particles are formed from hydratable polymers which are cross-linked so that they are insoluble in water. By introducing these superabsorbing particles into fluid passages of the formation, the water producing zones can be selectively blocked off by allowing the superabsorbing particles to swell with the absorption of water within the aqueous fluid containing fluid passages, while the superabsorbing particles remain small and unswollen in the hydrocarbon conducting fluid passages. Thus, the ability of fluids to flow through the aqueous fluid containing fluid passages is selectively reduced resulting in the reduced production of aqueous fluids while maintaining production of hydrocarbons.

5226481, Jul 13, 1993

Mar 4, 1992

7/846688

Hoang V. Le - Houston TX
William R. Wood - Spring TX

BJ Services Company - Houston TX

E21B 4326

166300

A method for increasing the stability of water-based fracturing fluids is shown in which a base fracturing fluid is formulated by mixing together a hard mix water containing multivalent cations, a water soluble polymer and a cross-linking agent for the water soluble polymer. A water softener is added to the base fracturing fluid which hinders the ability of the multivalent cations present in the hard mix water to compete with the water soluble polymer for borate based cross-linking agent, thereby stabilizing the resulting fracturing fluid.

7012044, Mar 14, 2006

Sep 5, 2003

10/655907

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

BJ Services Company - Houston TX

E21B 43/26, C09K 3/00

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

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.

5773638, Jun 30, 1998

May 16, 1997

8/858018

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

BJ Services Company - Houston TX

C07F 700

556 51

A method of formulating an organo-zirconium compound is accomplished by combining in solution a dialdehyde such as glyoxal with zirconium carbonate. The reacting solution forms an organo-zirconium compound and carbon dioxide which is evolved as a gas from the solution. This eliminates the need to filter or wash the organo-zirconium compound in order to remove undesirable by-products. The organo-zirconium compound can be used as a crosslinking agent for crosslinking aqueous polymer gels used in fracturing fluids for fracturing subterranean formations of oil and gas wells.

6017855, Jan 25, 2000

Nov 13, 1998

9/191336

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

BJ Services Company - Houston TX

C09K 300, E21B 4317

507209

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.