Hoang Anh Le

US Patent:

52264815, Jul 13, 1993

Filed:

Mar 4, 1992

Appl. No.:

7/846688

Inventors:

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

Assignee:

BJ Services Company - Houston TX

International Classification:

E21B 4326

US Classification:

166300

Abstract:

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.

US Patent:

61690589, Jan 2, 2001

Filed:

Jun 5, 1997

Appl. No.:

8/869388

Inventors:

Hoang V. Le - Houston TX
Subramanian Kesavan - The Woodlands TX
Jeffrey C. Dawson - Spring TX
David J. Mack - Edmond OK
Scott G. Nelson - Edmond OK

Assignee:

BJ Services Company - Houston TX

International Classification:

C09K 702
C09K 300
E21B 4326

US Classification:

507222

Abstract:

A subterranean formation is treated by introducing a fracturing treatment composition comprising a polymer treatment fluid containing a dispersion of hydrophilic water swellable particles into the formation. The water swellable particles comprise synthetic polymers that are crosslinked so that they are water insoluble, but capable of swelling in the presence of relatively small amounts of water. When used with treatment fluids containing at least a small amount of water, the particles swell and reduce fluid loss to the formation during the treatment. When used during a hydraulic fracturing treatment of a hydrocarbon bearing formation, the particles may also reduce or eliminate water production following the fracturing treatment by restricting the extension of a fracture into water-bearing formations, and/or by restricting the flow of fluids from water-bearing areas.

US Patent:

20190338179, Nov 7, 2019

Filed:

Jul 18, 2019

Appl. No.:

16/516064

Inventors:

- Houston TX, US
Dora V. Galvan - Houston TX, US
Hoang V. Le - Spring TX, US
Qi Qu - Spring TX, US

International Classification:

C09K 8/52
C09K 8/90
C09K 8/88
E21B 43/16
C09K 8/68
C09K 8/528

Abstract:

Scales are prevented or inhibited from forming in a well or in a formation penetrated by a well by pumping into the well a fluid comprising a hydratable polymer, a crosslinking agent, such as an organometallic crosslinking agent containing a polyvalent metal and a scale inhibitor selected from the group consisting of polyvinyl sulfonates, a polyacrylamidomethylpropane sulfonic acid, carboxymethyl inulin and sulfonated polyacrylates and mixtures thereof.

US Patent:

20150060062, Mar 5, 2015

Filed:

Aug 30, 2013

Appl. No.:

14/015660

Inventors:

- Houston TX, US
Dora V. Galvan - Houston TX, US
Hoang V. Le - Spring TX, US
Qi Qu - Spring TX, US

International Classification:

C09K 8/52
E21B 43/16

US Classification:

166279

Abstract:

Scales are prevented or inhibited from forming in a well or in a formation penetrated by a well by pumping into the well a fluid comprising a hydratable polymer, a crosslinking agent, such as an organometallic crosslinking agent containing a polyvalent metal and a scale inhibitor selected from the group consisting of polyvinyl sulfonates, a polyacrylamidomethylpropane sulfonic acid, carboxymethyl inulin and sulfonated polyacrylates and mixtures thereof.