Betz Laboratories, Inc.

Betzdearborn, Inc.

Hercules Corporation

Betz Paperchem, Inc.

Ge Betz, Inc.

Fu Chen

Keith A Bair

William S Carey

Wen P Liao

Jen-Chi Chen

Stephen Robert Vasconcellos

Scott M Boyette

David W Reichgott

Gerald C Walterick, Jr

Edward J Connors

John C Harrington, Iv

Michelle L Cotter

Paul R Hart

Michael R Wood

Mohand Melbouci

Teng-Shau Young

Michael A Schuster

De-Kai Loo

Walter J Burgess

Thai H Duong

Natalie A Kolson

Libardo A Perez

Donald T Freese

J Michael Brown

Roger C May

Daniel L Michalopoulos

Stephen M Kessler

Janet A Gaboury

Alexander C McDonald

Baraka Kawawa

Kristin E Buentello

John T Lin

Julie A Kaechelin

Huashi T Zhang

Method for controlling scale formation and deposition in aqueous systems

The present invention relates to compositions and use of water-soluble or water-dispersible copolymers for oil field applications. Specifically, the present invention relates to polymers containing allyloxy linkage andits functional dervatives for use in oil field applications as fluid additives for drilling and cementing processes.

Polymeric fluid loss additives and method of use thereof

The present invention relates to compositions and use of water-soluble or water-dispersible copolymers for oil field applications. Specifically, the present invention relates to polymers containing allyloxy linkage and its functional dervatives for use in oil field applications as fluid additives for drilling and cementing processes.

Water soluble copolymers

Method for producing an hydrophobically associative polymer is provided which is characterized by forming a monomer solution comprising a surfactant, at least one hydrophobic ethylenically unsaturated monomer, at least one hydrophilic monomer selected from nonionic ethylenically monomers, cationic ethylenically unsaturated monomers, anionic ethylenically unsaturated monomers or mixtures thereof, and water; forming a salt solution comprising a multivalent salt and water; mixing the monomer solution and salt solution to form a mixed solution; and charging the mixed solution with an initiator, thereby polymerizing the monomers to form the hydrophobically associative polymer in a dispersion. Aqueous dispersion containing the hydrophobically associative polymer formed by the method. The aqueous dispersion containing the hydrophobically associative polymer may be used in a paint formulation, in a mobility control fluid useful in enhanced oil recovery, in a secondary or tertiary oil recovery system, in an enhanced oil recovery method, in a cementious composition, in an oil well drilling mud formulation, in a fracturing fluid formulation, in a wastewater treatment system, or in a dewatering sludge system.

Method for making hydrophobically associative polymers, methods of use and compositions

Thiacrown ether and polymeric thiacrown ether compounds are disclosed. The thiacrown ether ring structures are substituted and have from 4 to about 10 sulfur atoms on each of the crown rings. The polymeric thiacrown ether ring structures are substituted with polymers and have from 4 to about 10 sulfur atoms on each of the crown rings. The thiacrown compounds of the present invention are expected to have utility in a wide range of applications including but not limited to utility as metal ion chelating, sequestering, and complexing agents. The thiacrown compounds are also expected to have utility as corrosion inhibitors for cooling tower, boiler, and waste water systems, hydrocarbon process systems and metal surface treatments systems.

Thiacrown ether compound

Water soluable, aqueous salt solution dispersible polymers and aqueous salt solutions containing dispersed polymers are produced by polymerization of ethylenically unsaturated soluble monomers in an aqueous salt solution in the presence of at least one carbohydrate. The polymers and aqueous salt solutions containing the dispersed polymers are useful for paper making, water clarification and emulsion breaking.

Aqueous dispersion polymers

A method of breaking oil-in-water and water-in-oil emulsions in crude oil processing systems in which copolymers incorporating a hydrophilic cationic monomer subunit and a lipophilic nonionic monomer subunit or dispersions or emulsions of cationic polymers and obverse demulsifiers are employed.

Copolmer formulations for breaking oil-and-water emulsions

Tannin containing polymers, their method of production and methods of using as water treatment agents are disclosed. The tannin containing polymers comprise copolymers of tannin and a cationic monomer. Another embodiment comprises tannin containing polymers of tannin, cationic monomer and at least one monomer selected from the group consisting of an anionic monomer and a nonionic monomer.

Composition and method for water clarification

Methods and compositions for breaking oil and water emulsions are disclosed. Oil and water emulsions are broken by treating the emulsion with a copolymer of tannin and a cationic monomer. The preferred composition is an aqueous solution of a copolymer of tannin and a cationic monomer, a water soluble organic multivalent salt and a glycol. The preferred salt is aluminum chlorohydrate and the preferred glycol is hexylene glycol.

Method of and composition for breaking oil and water emulsions in crude

Tannin containing polymers, their method of production and methods of using as water treatment agents are disclosed. The polymers are aldehyde-free and comprise copolymers of tannin and a cationic monomer. Another embodiment comprises aldehyde-free polymers of tannin, cationic monomer and at least one monomer selected from the group consisting of an anionic monomer and a nonionic monomer.

A process for preparing a water-soluble polymer dispersion is herein provided which is characterized by polymerizing from about 10 to 50 mole percent of a monomer having a formula (II); from about 1 to 50 mole percent of N-alkylacrylamide, N, N-dialkylacrylamide or mixtures thereof; having a formula (III) from about 1 to 70 mole percent acrylamide; and optionally up to about 4 mole percent of a monomer having a formula (I) having a benzyl functionality. The polymerization is carried out in the presence of an aqueous solution of a polyvalent anionic salt which contains (1) a water soluble cationic polymer which is insoluble in the aqueous salt solution and (2) a water soluble cationic polymer which is soluble in the aqueous salt solution.

Process for the preparation of aqueous dispersion polymers

A process for preparing a water-soluble polymer dispersion is herein provided which is characterized by polymerizing from about 10 to 50 mole percent of a monomer having a formula (II); from about 1 to 50 mole percent of N-alkylacrylamide, N,N-dialkylacrylamide or mixtures thereof; having a formula (III) from about 1 to 70 mole percent acrylamide; and optionally up to about 4 mole percent of a monomer having a formula (I) having a benzyl functionality. The polymerization is carried out in the presence of an aqueous solution of a polyvalent anionic salt which contains (1) a water soluble cationic polymer which is insoluble in the aqueous salt solution and (2) a water soluble cationic polymer which is soluble in the aqueous salt solution.

Process for the preparations of aqueous dispersion polymers

Composition comprising a tannin-containing copolymer

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Newtown, PA, United States of America

Fu Chen