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US 11,884,879 B2Granted
Compositions for use in oil and gas operations
AssigneesChevron U.S.A. Inc., Chevron Oronite Company LLC
InventorsDennis A. Alexis, Gayani Pinnawala Arachchilage, Varadarajan Dwarakanath, Do Hoon Kim, Taimur Malik, Gregory A. Winslow, Aaron Wilhelm
Life of this patent
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Abstract
Disclosed are compositions and methods for use in oil and gas operations.
Claims21
A concentrated liquid surfactant composition comprising:
- (a) a surfactant package in an amount of from 0.2% to 98% by weight, based on the total weight of the concentrated liquid surfactant composition;
- (b) a co-solvent in an amount of from greater than 0% to 95% by weight, based on the total weight of the concentrated liquid surfactant composition;
- and
- (c) a liquid polymer (LP) composition in an amount of from 0.1% to 60% by weight, based on the total weight of the concentrated liquid surfactant composition;
- wherein the surfactant composition comprises an alkyl aryl sulfonate surfactant;
- wherein the concentrated liquid surfactant composition has a total water content of from 0.5% to 20% by weight, based on the total weight of the concentrated liquid surfactant composition;
- wherein the concentrated liquid surfactant composition has a total additive concentration equal to the sum of the weight percent concentration of all surfactants and all co-solvents present in the concentrated liquid surfactant composition;
- wherein the concentrated liquid surfactant composition has a total polymer concentration equal to the sum of the weight percent concentration of all polymers present in the concentrated liquid surfactant composition;
- and
- wherein the weight ratio of the total additive concentration to the total polymer concentration is at least 1:1.
7 more elements
Dependencies are inferred from the claim text.