公开(公告)号：US20240327698A1

公开(公告)日：2024-10-03

申请号：US18496558

申请日：2023-10-27

Applicant: CHEVRON U.S.A. INC.

Inventor： Dustin L. WALKER ,  Gayani W. PINNAWALA ,  Nabijan NIZAMIDIN ,  Varadarajan DWARAKANATH ,  Guo-Qing TANG ,  Dustin J. LOWRY ,  Tetsuo A. INOUYE ,  Taimur MALIK

IPC: C09K8/60 ,  C09K8/68 ,  C09K8/74 ,  C09K8/80 ,  C09K8/86 ,  E21B43/267 ,  E21B43/27 ,  E21B47/11

CPC classification number: C09K8/604 ,  C09K8/602 ,  C09K8/68 ,  C09K8/74 ,  C09K8/80 ,  C09K8/86 ,  E21B43/267 ,  E21B43/27 ,  E21B47/11 ,  C09K2208/10 ,  C09K2208/12 ,  C09K2208/26 ,  C09K2208/28 ,  C09K2208/32

Abstract: Embodiments of the disclosure include compositions and methods that stabilize a 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 a surfactant and optionally one or more secondary surfactants. Also provided are methods of using the stabilized injection fluids in stimulation operations.

公开(公告)号：US20200056087A1

公开(公告)日：2020-02-20

申请号：US16528183

申请日：2019-07-31

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 ,  C09K8/66 ,  C09K8/68 ,  C09K8/60 ,  C09K8/80 ,  E21B43/20 ,  E21B43/26 ,  E21B47/10

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：US20240384158A1

公开(公告)日：2024-11-21

申请号：US18581235

申请日：2024-02-19

Applicant: CHEVRON U.S.A. INC.

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

IPC: C09K8/60 ,  C09K8/94 ,  E21B43/16

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

公开(公告)号：US20230097814A1

公开(公告)日：2023-03-30

申请号：US17795059

申请日：2021-01-25

Applicant: CHEVRON U.S.A. INC. ,  CHEVRON ORONITE COMPANY LLC

Inventor： Gayani W. PINNAWALA ,  Nabijan NIZAMIDIN ,  Varadarajan DWARAKANATH ,  Guo-Qing TANG ,  Aaron WILHELM ,  Scott P. WEST

IPC: C09K8/584 ,  C09K23/02 ,  C09K23/34 ,  C09K23/56

Abstract: Described herein are surfactant compositions for use in oil and gas operations. The surfactant compositions are stable under harsh conditions, including in formations that exhibit high salinity, high temperature, and/or high H2S concentration. Also provided are methods of using these compositions. Specifically an aqueous composition comprising: (i) a surfactant package, wherein the surfactant package comprises: (a) a surfactant comprising a branched, unbranched, saturated, or unsaturated C6-C32:80(0-65):PO(0-65):EO(0-100)-X having a concentration within the aqueous composition of from 0.05%-5% by weight, based on the total weight of the aqueous composition, wherein there is at least one BO, PO, or EO group, and wherein X comprises a sulfonate, a disulfonate, a carboxylate, a dicarboxylate, a sulfosuccinate, a disulfosuccinate, or hydrogen: and (b) olefin sulfonate and/or a disulfonate; and (ii) water.

公开(公告)号：US20230084576A1

公开(公告)日：2023-03-16

申请号：US17861987

申请日：2022-07-11

Applicant: CHEVRON U.S.A. INC.

Inventor： Ruth Ellen HAHN ,  Taimur MALIK ,  Samiha Said Elsayed MORSY ,  Nabijan NIZAMIDIN ,  Mohsen S. TAGAVIFAR

IPC: C09K8/94 ,  C09K8/60 ,  C09K8/594 ,  C09K8/588 ,  E21B33/138 ,  E21B43/26 ,  C09K8/584 ,  C09K8/66 ,  C09K8/74 ,  E21B43/16 ,  E21B43/267 ,  E21B43/17 ,  E21B43/25

Abstract: Disclosed are compositions and methods for the pressure protection of existing wells during infill drilling operations.

公开(公告)号：US20250122421A1

公开(公告)日：2025-04-17

申请号：US18615122

申请日：2024-03-25

Applicant: CHEVRON U.S.A. INC.

Inventor： Samiha Said Elsayed MORSY ,  Nabijan NIZAMIDIN ,  Taimur MALIK ,  Mohsen S. TAGAVIFAR

IPC: C09K8/94 ,  C09K8/584 ,  C09K8/588 ,  C09K8/594 ,  C09K8/60 ,  C09K8/66 ,  C09K8/74 ,  E21B33/138 ,  E21B43/16 ,  E21B43/17 ,  E21B43/25 ,  E21B43/26 ,  E21B43/267

Abstract: Disclosed are compositions and methods for the pressure protection of existing wells during infill drilling operations.

公开(公告)号：US20240279532A1

公开(公告)日：2024-08-22

申请号：US18469134

申请日：2023-09-18

Applicant: CHEVRON U.S.A. INC.

Inventor： Dustin L. WALKER ,  Gayani W. PINNAWALA ,  Nabijan NIZAMIDIN ,  Varadarajan DWARAKANATH ,  Guo-Qing TANG ,  Dustin J. LOWRY ,  Tetsuo Art INOUYE ,  Taimur MALIK

IPC: C09K8/60 ,  C09K8/68 ,  C09K8/74 ,  C09K8/80 ,  C09K8/86 ,  E21B43/267 ,  E21B43/27 ,  E21B47/11

CPC classification number: C09K8/604 ,  C09K8/602 ,  C09K8/68 ,  C09K8/74 ,  C09K8/80 ,  C09K8/86 ,  E21B43/267 ,  E21B43/27 ,  E21B47/11 ,  C09K2208/10 ,  C09K2208/12 ,  C09K2208/26 ,  C09K2208/28 ,  C09K2208/32

Abstract: Embodiments of the disclosure include compositions and methods that stabilize a 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 a non-ionic surfactant and optionally one or more secondary surfactants.

公开(公告)号：US20210002990A1

公开(公告)日：2021-01-07

申请号：US16922997

申请日：2020-07-07

Applicant: Chevron U.S.A. Inc.

Inventor： Samiha Said Elsayed MORSY ,  Nabijan NIZAMIDIN ,  Taimur MALIK ,  Mohsen S. TAGAVIFAR

IPC: E21B43/16 ,  E21B43/267 ,  C09K8/74 ,  C09K8/66 ,  C09K8/60

Abstract: Disclosed are compositions and methods for the pressure protection of existing wells during infill drilling operations.

公开(公告)号：US20210002544A1

公开(公告)日：2021-01-07

申请号：US16922993

申请日：2020-07-07

Applicant: Chevron U.S.A. Inc.

Inventor： Ruth Ellen HAHN ,  Taimur MALIK ,  Samiha Said Elsayed MORSY ,  Nabijan NIZAMIDIN ,  Mohsen S. TAGAVIFAR

IPC: C09K8/94 ,  C09K8/60 ,  C09K8/594 ,  C09K8/584 ,  C09K8/588 ,  E21B33/138 ,  E21B43/26

Abstract: Disclosed are compositions and methods for the pressure protection of existing wells during infill drilling operations.

公开(公告)号：US20240271032A1

公开(公告)日：2024-08-15

申请号：US18464691

申请日：2023-09-11

Applicant: CHEVRON U.S.A. INC.

Inventor： Dustin L. WALKER ,  Gayani W. PINNAWALA ,  Nabijan NIZAMIDIN ,  Varadarajan DWARAKANATH ,  Guo-Qing TANG ,  Dustin J. LOWRY ,  Tetsuo Art INOUYE ,  Taimur MALIK

IPC: C09K8/60 ,  C09K8/68 ,  C09K8/74 ,  C09K8/80 ,  C09K8/86 ,  E21B43/267 ,  E21B43/27 ,  E21B47/11

CPC classification number: C09K8/604 ,  C09K8/602 ,  C09K8/68 ,  C09K8/74 ,  C09K8/80 ,  C09K8/86 ,  E21B43/267 ,  E21B43/27 ,  E21B47/11 ,  C09K2208/10 ,  C09K2208/12 ,  C09K2208/26 ,  C09K2208/28 ,  C09K2208/32

Abstract: Embodiments of the disclosure include compositions and methods that stabilize a 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.