Carl W Aften

US Patent:

53425308, Aug 30, 1994

Filed:

May 4, 1992

Appl. No.:

7/877763

Inventors:

Carl W. Aften - Richmond TX
Robert K. Gabel - Houston TX

Assignee:

Nalco Chemical Company - Naperville IL

International Classification:

E21B 4326

US Classification:

252 8551

Abstract:

A composition suitable as an additive in down-hole fluid for inhibiting clay swelling in a down-hole formation is comprised of an aqueous solution of a quaternary amine-based cationic polyelectrolyte and salt(s). The cation of the salt(s) may be a divalent salt cation, a choline cation, are certain N-substituted quaternary ammonium salt cations. The salt(s) anion may be a monovalent inorganic anion or an anion derived from an organic acid having from 2 to 6 carbons.

US Patent:

20200392271, Dec 17, 2020

Filed:

May 8, 2020

Appl. No.:

16/869707

Inventors:

- Aubervilliers, FR
Qing Wang - Spring TX, US
Shaopeng Zhang - The Woodlands TX, US
Rose Ndong - Plainsboro NJ, US
Carl Aften - Magnolia TX, US
Jian Zhou - Langhorne PA, US

International Classification:

C08F 220/28
C09K 8/68
C09K 8/88
C08K 5/06
C08F 2/16
C08F 228/02
C08K 5/42
C08F 220/30
C09K 8/80

Abstract:

Polymeric compositions and systems useful for maintaining particle dispersions for extended periods of time via a three-dimensional interconnected network of bodies in the system after hydration.

US Patent:

20200199443, Jun 25, 2020

Filed:

Dec 12, 2019

Appl. No.:

16/711590

Inventors:

- Paris, FR
Hoang Van Le - Spring TX, US
Carl Aften - Magnolia TX, US
Dru Bishop - The Woodlands TX, US

Assignee:

RHODIA OPERATIONS - Paris

International Classification:

C09K 8/88
C08F 220/56
C09K 8/68
C09K 8/80
C09K 8/467
C09K 8/508
C09K 8/12
C09K 8/40
E21B 43/04
E21B 43/267
E21B 33/13

Abstract:

Methods for using polymeric systems that maintain particle dispersions for extended periods of time, and methods for using dry polymeric systems that are able to undergo fast hydration.

US Patent:

20190367803, Dec 5, 2019

Filed:

Aug 15, 2019

Appl. No.:

16/542034

Inventors:

- Covina CA, US
Allen Thomas Lyssy - Stockdale TX, US
Yaser Asgari - Chino Hills CA, US
Carl W. Aften - Magnolia TX, US
Hongxin Tang - Walnut CA, US

International Classification:

C09K 8/68
C09K 8/88

Abstract:

A dry polymer powder for use in enhanced petroleum recovery without being prehydrated before being added to water or brine to be introduced into a wellhead. The dry polymer powder consisting of at least one of a polyacrylamide, a copolymer of acrylamide and acrylic acid, a galactomannan, or cellulosic polymer or derivatives thereof, and the polymer can be crosslinked or not crosslinked, provided that if they are homo- or co-polymers of acrylic acid, they are not crosslinked. The dry polymer powder has a polymer size range distribution of 6.6%200 mesh, and wherein the polymer size range ensures that the dry polymer powder will efficiently hydrate in the water or brine within about one minute without forming fisheyes.

US Patent:

20170362497, Dec 21, 2017

Filed:

Jun 16, 2017

Appl. No.:

15/625958

Inventors:

- Covina CA, US
Allen Thomas Lyssy - Stockdale TX, US
Yaser Asgari - Chino Hills CA, US
Carl Wilhelm Aften - Magnolia TX, US
Hongxin Tang - Walnut CA, US

International Classification:

C09K 8/68
C09K 8/88

Abstract:

A dry polymer powder for use in enhanced petroleum recovery without being prehydrated before being added to water or brine to be introduced into a wellhead. The dry polymer powder consisting of at least one of a polyacrylamide, a copolymer of acrylamide and acrylic acid, a functionalized derivatives thereof, a galactomannan, or cellulosic polymer or derivatives thereof, and the polymer can be crosslinked or not crosslinked, provided that if they are homo- or co-polymers of acrylic acid, they are not crosslinked. The dry polymer powder is sized between two size limits, namely at least about 85 wt % of particles of a size smaller than about 40-mesh, and at least 75 wt % of particles of a size greater than 200-mesh, which size range ensures that the dry polymer powder will efficiently hydrate in the water or brine within about one minute without forming fisheyes.