公开(公告)号：US20220372363A1

公开(公告)日：2022-11-24

申请号：US17670988

申请日：2022-02-14

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 ,  C09K8/68 ,  F17D1/16 ,  C09K8/88 ,  C09K8/52 ,  E21B43/26 ,  C08L33/26 ,  C09K8/60

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

公开(公告)号：US20180275036A1

公开(公告)日：2018-09-27

申请号：US15996040

申请日：2018-06-01

Applicant: Chevron U.S.A. Inc.

Inventor： Varadarajan Dwarakanath ,  Dustin L. Walker ,  David R. Espinosa ,  Dennis A. Alexis ,  Harold C. Linnemeyer ,  Marlon Solano

IPC: G01N11/00 ,  E21B47/00 ,  E21B43/26 ,  E21B43/16 ,  G01L13/00

CPC classification number: G01N11/00 ,  B01D2101/04 ,  E21B43/16 ,  E21B43/26 ,  E21B47/00 ,  G01L13/00 ,  G01N2011/006

Abstract: Provided herein are portable apparatus as well as methods of analyzing an injection fluid using these portable apparatus. In some embodiments, the injection fluid can contain a polymer, but a polymer is not necessary. For example, the portable apparatus and methods may be used to determine viscosity, long term injectivity, filter ratio, or any combination thereof of the injection fluid.

公开(公告)号：US20180155505A1

公开(公告)日：2018-06-07

申请号：US15835020

申请日：2017-12-07

Applicant: Chevron U.S.A. Inc.

Inventor： Do Hoon Kim ,  Dennis A. Alexis ,  Varadarajan Dwarakanath ,  David R. Espinosa ,  Taimur Malik ,  Peter G. New ,  Adam C. Jackson ,  Christopher Michael Niemi

IPC: C08J3/00 ,  C09K8/588 ,  E21B43/16

CPC classification number: C08J3/005 ,  C08J3/03 ,  C08J2300/00 ,  C08J2333/26 ,  C09K8/588 ,  E21B43/16 ,  E21B43/26

Abstract: Provided herein are liquid polymer (LP) compositions comprising a synthetic (co)polymer (e.g., an acrylamide (co)polymer), as well as methods for preparing aqueous polymer solutions by combining these LP compositions with an aqueous fluid. The resulting aqueous 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 aqueous polymer solutions in oil and gas operations, including enhanced oil recovery.

公开(公告)号：US11248160B2

公开(公告)日：2022-02-15

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 ,  C09K8/68 ,  F17D1/16 ,  C09K8/88 ,  C09K8/52 ,  E21B43/26 ,  C08L33/26 ,  C09K8/60 ,  C08K5/09 ,  C08K5/37

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

公开(公告)号：US10344129B2

公开(公告)日：2019-07-09

申请号：US15835020

申请日：2017-12-07

Applicant: Chevron U.S.A. Inc.

Inventor： Do Hoon Kim ,  Dennis A. Alexis ,  Varadarajan Dwarakanath ,  David R. Espinosa ,  Taimur Malik ,  Peter G. New ,  Adam C. Jackson ,  Christopher Michael Niemi

IPC: C09K8/588 ,  C08J3/00 ,  E21B43/16 ,  E21B43/26

Abstract: Provided herein are liquid polymer (LP) compositions comprising a synthetic (co)polymer (e.g., an acrylamide (co)polymer), as well as methods for preparing aqueous polymer solutions by combining these LP compositions with an aqueous fluid. The resulting aqueous 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 aqueous polymer solutions in oil and gas operations, including enhanced oil recovery.

公开(公告)号：US20180031462A1

公开(公告)日：2018-02-01

申请号：US15661914

申请日：2017-07-27

Applicant: Chevron U.S.A. Inc.

Inventor： Varadarajan Dwarakanath ,  Dustin L. Walker ,  David R. Espinosa ,  Dennis A. Alexis ,  Harold C. Linnemeyer ,  Marlon Solano

IPC: G01N11/00 ,  E21B43/16 ,  E21B43/26 ,  E21B47/00

CPC classification number: G01N11/00 ,  B01D2101/04 ,  E21B43/16 ,  E21B43/26 ,  E21B47/00 ,  G01L13/00 ,  G01N2011/006

Abstract: Provided herein are portable apparatus as well as methods of analyzing an injection fluid using these portable apparatus. In some embodiments, the injection fluid can contain a polymer, but a polymer is not necessary. For example, the portable apparatus and methods may be used to determine viscosity, long term injectivity, filter ratio, or any combination thereof of the injection fluid.

公开(公告)号：US20230383636A1

公开(公告)日：2023-11-30

申请号：US18326409

申请日：2023-05-31

Applicant: CHEVRON U.S.A. INC.

Inventor： Gojko Matovic ,  Nabijan Nizamidin ,  Michael Ogechukwuka Unomah ,  Do Hoon Kim ,  Varadarajan Dwarakanath ,  Taimur Malik ,  Gayani W. Pinnawala ,  Dennis A. Alexis ,  Samuel Wei-en Lau

IPC: E21B43/267 ,  C09K8/588 ,  C09K8/584

CPC classification number: E21B43/267 ,  C09K8/588 ,  C09K8/584 ,  C09K2208/28

Abstract: 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.

公开(公告)号：US11261300B2

公开(公告)日：2022-03-01

申请号：US17121325

申请日：2020-12-14

Applicant: Chevron U.S.A. Inc.

Inventor： Do Hoon Kim ,  Dennis A. Alexis ,  Varadarajan Dwarakanath ,  David R. Espinosa ,  Taimur Malik ,  Peter G. New ,  Adam C. Jackson ,  Christopher Michael Niemi

IPC: E21B43/16 ,  C08J3/00 ,  C09K8/588 ,  C08J3/03 ,  E21B43/26

Abstract: Provided herein are liquid polymer (LP) compositions comprising a synthetic (co)polymer (e.g., an acrylamide (co)polymer), as well as methods for preparing aqueous polymer solutions by combining these LP compositions with an aqueous fluid. The resulting aqueous 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 aqueous polymer solutions in oil and gas operations, including enhanced oil recovery.

公开(公告)号：US11008502B2

公开(公告)日：2021-05-18

申请号：US16262216

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: E21B43/26 ,  C09K8/584 ,  C09K8/588 ,  C09K8/68 ,  F17D1/16 ,  C09K8/88 ,  C09K8/52 ,  C08L33/26 ,  C09K8/60 ,  C08K5/09 ,  C08K5/37

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

公开(公告)号：US10436693B2

公开(公告)日：2019-10-08

申请号：US15661914

申请日：2017-07-27

Applicant: Chevron U.S.A. Inc.

Inventor： Varadarajan Dwarakanath ,  Dustin L. Walker ,  David R. Espinosa ,  Dennis A. Alexis ,  Harold C. Linnemeyer ,  Marlon Solano

IPC: G01N11/00 ,  E21B43/16 ,  G01L13/00 ,  E21B47/00 ,  E21B43/26

Abstract: Provided herein are portable apparatus as well as methods of analyzing an injection fluid using these portable apparatus. In some embodiments, the injection fluid can contain a polymer, but a polymer is not necessary. For example, the portable apparatus and methods may be used to determine viscosity, long term injectivity, filter ratio, or any combination thereof of the injection fluid.