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Compositions and methods for treating a water blocked well using a nonionic fluorinated surfactant
(United States Patent and Trademark Office, 2012-03-20)
The present invention includes a method of treating a hydrocarbon-bearing clastic formation having non-connate water by contacting the hydrocarbon-bearing clastic formation with a composition that includes a solvent and a ...
Use of fluorocarbon surfactants to improve the productivity of gas and gas condensate wells
(United States Patent and Trademark Office, 2010-08-10)
The present invention includes composition having a nonionic, fluorinated polymeric surfactant, water and solvent. Embodiments of compositions according to the present invention are useful, for example, for recovering ...
Method for treating a formation with a solvent
(United States Patent and Trademark Office, 2016-05-31)
The present invention includes compositions and methods for treating a hydrocarbon-bearing formation by contacting the hydrocarbon-bearing formation with a fluid that includes at least one of a polyol or polyol ether, ...
Quaternary ammonium surfactants
(United States Patent and Trademark Office, 2015-12-08)
Provided herein, inter alia, are novel compositions and methods having application in the field of enhanced oil recovery. In particular, the quaternary ammonium compounds and mixtures thereof presented herein can be used, ...
Compositions and methods for controlling the stability of ethersulfate surfactants at elevated temperatures
(United States Patent and Trademark Office, 2015-08-18)
The present invention describes the method of making an ether sulfate surfactant solution hydrolytically stable by adding one or more alkalinity generating agents at levels greater than 0.05%. The surfactant solutions of ...
Characterization of organic contaminants and assessment of remediation performance in subsurface formations
(United States Patent and Trademark Office, 1999-12-21)
Characterization of organic contaminants in subsurface formation is performed by methods for detecting the presence of nonaqueous phase liquid in a subsurface formation, and for determining the composition and for determining ...
Phenol-alkoxylate co-solvent surfactant composition
(United States Patent and Trademark Office, 2019-01-01)
Provided herein are, inter alia, compositions including a surfactant and a phenol-alkoxylate co-solvent useful in enhanced oil recovery. The compositions and methods provided herein are particularly useful for oil recovery ...
Process of using hard brine at high alkalinity for enhanced oil recovery (EOR) applications
(United States Patent and Trademark Office, 2012-05-29)
The present invention describes the use of EDTA and/or alkali treated hard brine at high pH for making ASP formulations for EOR applications.
Phenol-alkoxylate co-solvent surfactant composition
(United States Patent and Trademark Office, 2019-01-29)
Provided herein are, inter alia, compositions including a surfactant and a phenol-alkoxylate co-solvent useful in enhanced oil recovery. The compositions and methods provided herein are particularly useful for oil recovery ...
Surfactant-less alkaline-polymer formulations for recovering reactive crude oil
(United States Patent and Trademark Office, 2015-11-03)
Compositions and methods for oil recovery using a surfactant-less alkaline-polymer system in hard water or hard brine is described in the instant invention. The formulation further includes a chelating agent, an alkaline ...