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：US20200317992A1

公开(公告)日：2020-10-08

申请号：US16635904

申请日：2018-07-31

Applicant: CHEVRON U.S.A. INC.

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

IPC: C09K8/60 ,  C09K8/86 ,  E21B47/11

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：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：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：US20200317993A1

公开(公告)日：2020-10-08

申请号：US16635906

申请日：2018-07-31

Applicant: CHEVRON U.S.A. INC.

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

IPC: C09K8/60 ,  C09K8/86 ,  E21B47/11

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：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.

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：US20210095184A1

公开(公告)日：2021-04-01

申请号：US16635733

申请日：2018-07-31

Applicant: CHEVRON U.S.A. INC.

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

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

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.

公开(公告)号：US20190128791A1

公开(公告)日：2019-05-02

申请号：US16229616

申请日：2018-12-21

Applicant: Chevron U.S.A. Inc.

Inventor： Douglas K. McCARTY ,  Jon E. BURGER ,  Lin LI ,  Guo-Qing TANG ,  Marcus O. WIGAND ,  Varadarajan DWARAKANATH ,  Dyung Tien VO

IPC: G01N15/08 ,  G01N33/24 ,  C09K8/88 ,  C09K8/68 ,  C09K8/66 ,  C09K8/60 ,  E21B49/08 ,  E21B49/00 ,  E21B43/26

CPC classification number: G01N15/082 ,  C09K8/602 ,  C09K8/605 ,  C09K8/66 ,  C09K8/68 ,  C09K8/88 ,  C09K2208/28 ,  E21B43/26 ,  E21B49/00 ,  E21B49/08 ,  G01N33/24

Abstract: A workflow to optimize a fracturing fluid for injection into a subterranean formation is provided. The workflow comprises measurement of fundamental properties and characteristics of reservoir rock and fluid, their interaction with fracturing fluid, computer-based models and laboratory performance testing to select preferred fracturing base fluid and additives package for use in fracturing/re-fracturing stimulation of specific shale formations to enhance hydrocarbon recovery.