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公开(公告)号：US11884879B2
公开(公告)日：2024-01-30
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: C09K8/52 , C09K8/584 , C09K8/588 , C09K8/68 , F17D1/16 , C09K8/88 , E21B43/26 , C08L33/26 , C09K8/60 , C08K5/09 , C08K5/37
CPC classification number: C09K8/584 , C08L33/26 , C09K8/52 , C09K8/588 , C09K8/602 , C09K8/68 , C09K8/88 , E21B43/26 , F17D1/16 , C08K5/09 , C08K5/37 , C09K2208/28
Abstract: Disclosed are compositions and methods for use in oil and gas operations.
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公开(公告)号：US11834606B2
公开(公告)日：2023-12-05
申请号：US17581392
申请日：2022-01-21
Applicant: CHEVRON U.S.A. INC.
Inventor： Sumitra Subrahmanyan , Gayani W. Pinnawala , Sophany Thach , Gregory A. Winslow , Dennis A. Alexis , Harold C. Linnemeyer , Timothy P. Theriot , Les Leszek Jackowski , Francesca Cibotti
CPC classification number: C09K8/588 , C09K8/032 , E21B21/068 , E21B43/385 , C09K2208/26 , C09K2208/28
Abstract: Embodiments of treating fluid comprising hydrocarbons, water, and polymer being produced from a hydrocarbon-bearing formation are provided. One embodiment comprises adding a concentration of a viscosity reducer to the fluid to degrade the polymer present in the fluid and adding a concentration of a neutralizer to the fluid to neutralize the viscosity reducer in the fluid. The addition of the concentration of the viscosity reducer is in a sufficient quantity to allow for complete chemical degradation of the polymer prior to the addition of the concentration of the neutralizer in the fluid such that excess viscosity reducer is present in the fluid. The addition of the concentration of the neutralizer is sufficiently upstream of any surface fluid processing equipment to allow for complete neutralization of the excess viscosity reducer such that excess neutralizer is present in the fluid prior to the fluid reaching any of the surface fluid processing equipment.
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Patent Agency Ranking
公开(公告)号：US11739254B2
公开(公告)日：2023-08-29
申请号：US17321993
申请日：2021-05-17
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
CPC classification number: C09K8/584 , C08L33/26 , C09K8/52 , C09K8/588 , C09K8/602 , C09K8/68 , C09K8/88 , E21B43/26 , F17D1/16 , C08K5/09 , C08K5/37 , C09K2208/28
Abstract: Disclosed are compositions and methods for use in oil and gas operations.
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公开(公告)号：US20220145157A1
公开(公告)日：2022-05-12
申请号：US17581392
申请日：2022-01-21
Applicant: CHEVRON U.S.A. INC.
Inventor： Sumitra Subrahmanyan , Gayani W. Pinnawala , Sophany Thach , Gregory A. Winslow , Dennis A. Alexis , Harold C. Linnemeyer , Timothy P. Theriot , Les Leszek Jackowski , Francesca Cibotti
IPC: C09K8/03
Abstract: Embodiments of treating fluid comprising hydrocarbons, water, and polymer being produced from a hydrocarbon-bearing formation are provided. One embodiment comprises adding a concentration of a viscosity reducer to the fluid to degrade the polymer present in the fluid and adding a concentration of a neutralizer to the fluid to neutralize the viscosity reducer in the fluid. The addition of the concentration of the viscosity reducer is in a sufficient quantity to allow for complete chemical degradation of the polymer prior to the addition of the concentration of the neutralizer in the fluid such that excess viscosity reducer is present in the fluid. The addition of the concentration of the neutralizer is sufficiently upstream of any surface fluid processing equipment to allow for complete neutralization of the excess viscosity reducer such that excess neutralizer is present in the fluid prior to the fluid reaching any of the surface fluid processing equipment.
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公开(公告)号：US20220098470A1
公开(公告)日：2022-03-31
申请号：US17321993
申请日：2021-05-17
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.
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公开(公告)号：US20210171721A1
公开(公告)日：2021-06-10
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
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.
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公开(公告)号：US10168265B2
公开(公告)日：2019-01-01
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
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.
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