公开(公告)号：US11905461B2

公开(公告)日：2024-02-20

申请号：US16922999

申请日：2020-07-07

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: E21B43/16 ,  C09K8/60 ,  C09K8/94

CPC classification number: C09K8/602 ,  C09K8/94 ,  E21B43/166

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：US11898094B2

公开(公告)日：2024-02-13

申请号：US17104514

申请日：2020-11-25

Applicant: Chevron U.S.A. INC.

Inventor： Nabijan Nizamidin ,  Harold C. Linnemeyer ,  Timothy P. Theriot ,  Gojko Matovic ,  Seung Han ,  Do Hoon Kim ,  Kerry K. Spilker

IPC: C09K8/62 ,  C09K8/60 ,  G01N11/04 ,  E21B43/26 ,  E21B47/00 ,  G06F30/28

CPC classification number: C09K8/62 ,  C09K8/602 ,  E21B43/26 ,  E21B47/00 ,  G01N11/04 ,  G06F30/28 ,  C09K2208/08 ,  C09K2208/28

Abstract: The present invention relates generally to systems and processes for improved drag reduction estimation and measurement and more specifically to portable drag reduction analyzers and processes for upscaling drag reduction data for a variety of field applications. A drag reduction parameter ΔB for the fluid mixture is used for determining drag reduction for a fluid mixture in an oil field or pipeline operation.

公开(公告)号：US11753582B2

公开(公告)日：2023-09-12

申请号：US16635733

申请日：2018-07-31

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

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: 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 including a hydrophobic tail comprising from 6 to 60 carbon atoms and optionally one or more secondary surfactants.

公开(公告)号：US11421150B2

公开(公告)日：2022-08-23

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

Abstract: Disclosed are compositions and methods for the pressure protection of existing wells during infill drilling operations. The methods can include injecting an aqueous pressure protection composition into an unconventional subterranean formation via an existing wellbore in fluid communication with a rock matrix of the unconventional subterranean formation prior to and/or during injection of a fracturing fluid into the unconventional subterranean formation via a new wellbore in fluid communication with the rock matrix of the unconventional subterranean formation; and producing a hydrocarbon from the existing wellbore during and/or after the injection of the fracturing fluid into the unconventional subterranean formation via the new wellbore.

公开(公告)号：US11377586B2

公开(公告)日：2022-07-05

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 ,  C09K8/60 ,  C09K8/66 ,  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：US20210156210A1

公开(公告)日：2021-05-27

申请号：US16697426

申请日：2019-11-27

Applicant: CHEVRON U.S.A. INC.

Inventor： Nabijan Nizamidin ,  Harold Linnemeyer

IPC: E21B21/08 ,  E21B43/267 ,  G01N11/04

Abstract: The present invention relates generally to systems and processes for improved drag reduction estimation and measurement and more specifically to portable drag reduction analyzers and processes for upscaling drag reduction data for a variety of field applications. A drag reduction parameter ΔB for the fluid mixture is used for determining drag reduction for a fluid mixture in an oil field or pipeline operation.