Dow Global Technolgoies LLC

Stephen M Hoyles

Robert E Hefner, Jr

Michael K Poindexter

M J Yanjarappa

Callie M Ayers

Kandathil Eapen Verghese

Sayeed Abbas

Cesar Edmundo Meza

Kaylie L Young

Cecile Boyer

Shawn J Maynard

Ramki Subramanian

Thiago V Alonso

Marcos Franca

A method of demulsifying crude oil, said method comprising the step of reacting an amount of crude oil with a polyester demulsifier, therein the demulsifier is used in quantities from 0.0001% to 5% (1-50,000 ppm), preferably 0.0005% to 2% (5-20,000 ppm), more preferably 0.0008% to 1% (8-10,000 ppm) and most preferably 0.001 to 0.1 wt. % polymer (10-1,000 ppm) related to the oil fraction of the utilized emulsion.

Method of using high molecular weight aromatic polyol polyesters as demulsifiers for crude oil treatment

Disclosed is a composition and use thereof for the recovery of hydrocarbon fluids from a subterranean reservoir. More particularly, this invention concerns sulfonated epoxy resin polymers comprising an epoxide-containing compound, a primary amino sulfonate, and optionally one or more of a primary monoamine alkylene oxide oligomer, that modify the permeability of subterranean formations and increase the mobilization and/or recovery rate of hydrocarbon fluids present in the formations.

Method for reducing the permeability of a subterranean formation to aqueous-based fluids

Disclosed is a composition and use thereof for the recovery of hydrocarbon fluids from a subterranean reservoir. More particularly, this invention concerns &#x3b1;-glycol containing sulfonated epoxy resin composition and method for preparing said composition. The &#x3b1;-glycol containing sulfonated epoxy resin composition is made by forming a reaction product comprising an epoxide-containing compound, a primary amino sulfonate, and optionally one or more of a primary monoamine alkylene oxide oligomer, followed by converting any unreacted epoxide groups in the reaction product to &#x3b1;-glycol groups by hydrolysis. Said &#x3b1;-glycol containing sulfonated epoxy resin compositions demonstrate good solubility in aqueous solutions and are useful for modifying the permeability of subterranean formations and increasing the mobilization and/or recovery rate of hydrocarbon fluids present in the formations.

Method for recovering hydrocarbon fluids from a subterranean reservoir using alpha-glycol containing sulfonated epoxy resin compound

Embodiments of the present disclosure include a method of separating an oil-in-water emulsion formed during crude oil production into a water phase and an oil phase that includes adding 1 part-per-million (ppm) to 10000 ppm of a cationic vinyl imidazolium-based copolymer to the oil-in-water emulsion, based on the total volume of the oil-in-water emulsion, to form a water phase and an oil phase, and separating the water phase from the oil phase.

Cationic vinyl imidazolium-based copolymer for separating an oil-in-water emulsion

Embodiments of the present disclosure include a method of separating an oil-in-water emulsion formed during crude oil production into a water phase and an oil phase that includes adding 1 part-per-million (ppm) to 10000 ppm of an N-vinylpyrrolidone based cationic copolymer to the oil-in-water emulsion, based on the total volume of the oil-in-water emulsion, to form a water phase and an oil phase, and separating the water phase from the oil phase.

N-vinylpyrrolidone-based cationic copolymer for separating an oil-in-water emulsion

Oil-water dispersions and emulsions derived from petroleum industry operations are demulsified and clarified using an aqueous water clarifier composition. Formation of such oil-water dispersion and emulsions is inhibited and mitigated using the aqueous water clarifier composition comprising a latex dispersion of an anionic polymer, an alcohol, and a base. The latex dispersion of an anionic polymers comprise an anionic polymer comprising: A) 2-80% by weight of at least one C-C&#x3b1;,&#x3b2;-ethylenically unsaturated carboxylic acid monomer; B) 15-80% by weight of at least one nonionic, copolymerizable &#x3b1;,&#x3b2;-ethylenically unsaturated monomer; C) 0-50% by weight of one or more of the following monomers: C1) at least one nonionic vinyl surfactant ester; or C2) at least one nonionic, copolymerizable &#x3b1;,&#x3b2;-ethylenically unsaturated monomer having longer polymer chains than monomer B), or C3) at least one nonionic urethane monomer; and, optionally, D) 0-5% by weight of at least one crosslinker.

Stabilized aqueous water clarifier composition and methods of use

A curable ambient cure high-solids coating composition including

Amphiphilic block copolymer-toughened epoxy resins and ambient cure high-solids coatings made therefrom

An epoxy or phenolic functional polyester/polyether oligomer or polymer having a functionality of greater than 2 and comprising moieties derived from diglycidyl ethers or diglycidyl esters, anhydrides and dihydric phenols. The oligomer or polymer is prepared by (1) reacting a liquid epoxy resin (LER), along with a dihydric phenol, with a cyclic anhydride, in the presence of a catalyst, the cyclic anhydride being employed in an amount sufficient to achieve the desired functionality but insufficient to form gels in the anhydride-modified epoxy resin.

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Lake Jackson, TX, United States of America

Stephen M Hoyles