公开(公告)号：US20190233715A1

公开(公告)日：2019-08-01

申请号：US16262211

申请日：2019-01-30

Applicant: Chevron U.S.A. Inc. ,  Chevron Oronite Company LLC

Inventor： Dennis A. ALEXIS ,  Gayani PINNAWALA ARACHCHILAGE ,  Varadarajan DWARAKANATH ,  Do Hoon KIM ,  Taimur MALIK ,  Gregory A. WINSLOW ,  Aaron WILHELM

IPC: C09K8/584 ,  C09K8/588

CPC classification number: C09K8/584 ,  C08K5/09 ,  C08K5/37 ,  C08L33/26 ,  C09K8/52 ,  C09K8/588 ,  C09K8/602 ,  C09K8/68 ,  C09K8/88 ,  C09K2208/28 ,  F17D1/16

Abstract: Disclosed are compositions and methods for use in oil and gas operations.

公开(公告)号：US20240052234A1

公开(公告)日：2024-02-15

申请号：US18488079

申请日：2023-10-17

Applicant: CHEVRON U.S.A. INC.

Inventor： Nabijan NIZAMIDIN ,  Gayani W. PINNAWALA ,  Guo-Qing TANG ,  Varadarajan DWARAKANATH ,  Gregory A. WINSLOW ,  Jordan Taylor ISBELL ,  Taimur MALIK

IPC: C09K8/584 ,  C09K8/588 ,  C09K8/60 ,  C09K8/66 ,  C09K8/68 ,  C09K8/80 ,  E21B43/20 ,  E21B43/26 ,  E21B47/11

CPC classification number: C09K8/584 ,  C09K8/588 ,  C09K8/602 ,  C09K8/665 ,  C09K8/68 ,  C09K8/80 ,  E21B43/20 ,  E21B43/26 ,  E21B47/11

Abstract: 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.

公开(公告)号：US20230332037A1

公开(公告)日：2023-10-19

申请号：US17920973

申请日：2021-04-26

Applicant: CHEVRON U.S.A. INC.

Inventor： Gayani W. PINNAWALA ,  Sujeewa S. PALAYANGODA ,  Gregory A. WINSLOW ,  Varadarajan DWARAKANATH

IPC: C09K8/584 ,  C09K8/588 ,  C09K8/60 ,  C09K8/68 ,  C07C309/22

CPC classification number: C09K8/584 ,  C07C309/22 ,  C09K8/588 ,  C09K8/604 ,  C09K8/68 ,  E21B43/26

Abstract: 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.

公开(公告)号：US20230257644A1

公开(公告)日：2023-08-17

申请号：US17920979

申请日：2021-04-26

Applicant: CHEVRON U.S.A. INC.

Inventor： Gayani W. PINNAWALA ,  Sujeewa S. PALAYANGODA ,  Gregory A. WINSLOW ,  Varadarajan DWARAKANATH ,  Kerry Kennedy SPILKER ,  Robert George SHONG

IPC: C09K8/584 ,  C09K8/60 ,  C09K8/68 ,  C09K8/588 ,  C07C57/13 ,  C07C309/22

CPC classification number: C09K8/584 ,  C09K8/604 ,  C09K8/68 ,  C09K8/588 ,  C07C57/13 ,  C07C309/22 ,  E21B43/26

Abstract: 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.

公开(公告)号：US20220290031A1

公开(公告)日：2022-09-15

申请号：US17635222

申请日：2020-08-14

Applicant: Chevron U.S.A. Inc.

Inventor： Ruth Ellen HAHN ,  Varadarajan DWARAKANATH ,  Kerry SPILKER ,  Gregory A. WINSLOW ,  Sophany THACH ,  Gayani W. PINNAWALA ,  Christopher GRIFFITH ,  Harold Charles LINNEMEYER ,  Robert Neil TROTTER

IPC: C09K8/38 ,  C09K8/60 ,  C09K8/94 ,  C09K8/584

Abstract: Described herein are aqueous based foams for use in drilling operations. The foams can be used in below bubble point drilling operations to control the migration of reservoir gases (e.g., hydrogen sulfide) to the surface.

公开(公告)号：US20210002444A1

公开(公告)日：2021-01-07

申请号：US16922999

申请日：2020-07-07

Applicant: Chevron U.S.A. Inc.

Inventor： Varadarajan DWARAKANATH ,  Taimur MALIK ,  Lin ZOU ,  Jimin Daniel ZHOU ,  Nabijan NIZAMIDIN ,  Gregory A. WINSLOW ,  Reza BANKI ,  Mohamad SALMAN

IPC: C08J9/12

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