Chevron U.s.a. Inc.

Chevron Oronite Company LLC

Kemira Oyj

Varadarajan Dwarakanath

Taimur Malik

Dennis Arun Alexis

Do Hoon Kim

Gregory Arthur Winslow

Gayani W Pinnawala

Sophany Thach

David R Espinosa

Nabijan Nizamidin

Hong Yang

Logan Jackson

Sukhjit Aujla

Ronald Robinson

Frances Fournier

Dustin Luke Walker

Guo-Qing Tang

Tom Lynch

Robert George Shong

Robert Matthew Dean

Curtis Bay Campbell

Gayani Pinnawala Arachchilage

Adam C Jackson

Sumitra Subrahmanyan

Sujeewa S Palayangoda

Anette Poulsen

Aaron Wilhelm

Tetsuo Art Inouye

Marlon Solano

Dustin J Lowry

Ping Wang

Andrew Michael Thomas

Gabriel Prukop

Will S Slaughter

Christopher Michael Niemi

Jordan Taylor Isbell

Andrew M Davidson

Peter G New

Lin Li

Marcus Oliver Wigand

Harold Charles Linnemeyer

Theresa Ann Denslow

Jon E Burger

Tanmay Chaturvedi

Mohamad Salman

Douglas K McCarty

David Espinosa

Dyung Tien Vo

Thomas J Lynch

Douglas G Naae

Mohsen S Tagavifar

Oya Aysen Karazincir

Adam Christopher Jackson

Ping Zhao

Robert M Dean

Michael Ogechukwuka Unomah

Gojko Matovic

Samuel Wei-en Lau

Jimin Daniel Zhou

Reza Banki

Lin Zuo

Dennis A Alexis

The present disclosure is directed to polyanionic surfactants, surfactant mixtures, compositions derived thereof, and uses thereof such as in oil and gas operations. Methods of making polyanionic surfactants are also described.

Polyanionic surfactants and methods of making and using thereof

Described herein are compositions and methods that stabilize an injection fluid when exposed to reservoir conditions, reducing formation damage and increasing the amount of hydrocarbon recovered. Specifically, the formulation is a single-phase liquid surfactant package which comprises an anionic surfactant and optionally one or more secondary surfactants.

Injection fluids comprising an anionic surfactant for treating unconventional formations

The present disclosure is directed to surfactants (in particular olefin sulfonates), surfactant packages, compositions derived thereof, and uses thereof in hydrocarbon recovery. Methods of making olefin sulfonate surfactants are also described.

Olefin sulfonates

Provided herein are liquid polymer (LP) compositions comprising a synthetic (co)polymer (e.g., an acrylamide (co)polymer), as well as methods for preparing inverted polymer solutions by inverting these LP compositions in an aqueous fluid. The resulting inverted polymer solutions can have a concentration of a synthetic (co)polymer (e.g., an acrylamide (co)polymer) of from 50 to 15,000 ppm, and a filter ratio of 1.5 or less at 15 psi using a 1.2 μm filter. Also provided are methods of using these inverted polymer solutions in oil and gas operations, including enhanced oil recovery.

Methods for hydrocarbon recovery

The present disclosure is directed to polyanionic surfactants, surfactant mixtures, compositions derived thereof, and uses thereof in hydrocarbon recovery. Methods of making polyanionic surfactants are also described.

Described are compositions and methods for use in oil and gas operations. The methods can decrease pressure drop along a lateral segment of a wellbore in an unconventional subterranean formation.

Compositions containing friction reducers and methods of using thereof in oil and gas operations

Provided herein are compositions comprising borate-acid buffers, as well as methods of using these compositions in oil and gas operations, including enhanced oil recovery (EOR) operations, fracturing operations, stimulation operations, etc.

Use of a borate-acid buffer in oil and gas operations

Methods of using olefin sulfonates

Olefin sulfonate compositions

Disclosed are foam precursor compositions, foamed compositions, and methods of using these foamed compositions for the stimulation of unconventional reservoirs.

Methods for foam stimulation

Disclosed herein are methods and composition for breaking foam, emulsions, or any combination thereof.

Compositions and methods for breaking foams and emulsions

Growing community of inventors

Houston, TX, United States of America

Varadarajan Dwarakanath