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公开(公告)号：US12247162B2
公开(公告)日：2025-03-11
申请号：US18437986
申请日：2024-02-09
Applicant: CHEVRON U.S.A. INC.
Inventor： Do Hoon Kim , Dennis Arun Alexis , Varadarajan Dwarakanath , David Espinosa , Taimur Malik , Logan Jackson , Tom Lynch , Ronald Robinson , Frances Fournier , Hong Yang , Sukhjit Aujla
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 inverted polymer solutions by inverting these LP compositions in an aqueous fluid. The resulting inverted 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 inverted polymer solutions in oil and gas operations, including enhanced oil recovery.
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公开(公告)号：US20240182779A1
公开(公告)日：2024-06-06
申请号：US18437986
申请日：2024-02-09
Applicant: CHEVRON U.S.A. INC.
Inventor： Do Hoon Kim , Dennis Arun Alexis , Varadarajan Dwarakanath , David Espinosa , Taimur Malik , Logan Jackson , Tom Lynch , Ronald Robinson , Frances Fournier , Hong Yang , Sukhjit Aujla
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 inverted polymer solutions by inverting these LP compositions in an aqueous fluid. The resulting inverted 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 inverted polymer solutions in oil and gas operations, including enhanced oil recovery.
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公开(公告)号：US20220033706A1
公开(公告)日：2022-02-03
申请号：US17395933
申请日：2021-08-06
Applicant: Chevron U.S.A. Inc.
Inventor： Do Hoon Kim , Dennis Arun Alexis , Varadarajan Dwarakanath , David Espinosa , Taimur Malik , Logan Jackson , Tom Lynch , Ronald Robinson , Frances Fournier , Hong Yang , Sukhjit Aujla
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 inverted polymer solutions by inverting these LP compositions in an aqueous fluid. The resulting inverted 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 inverted polymer solutions in oil and gas operations, including enhanced oil recovery.
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公开(公告)号：US20170158948A1
公开(公告)日：2017-06-08
申请号：US15372170
申请日：2016-12-07
Applicant: Chevron U.S.A. Inc.
Inventor： Do Hoon Kim , Dennis Arun Alexis , Varadarajan Dwarakanath , David Espinosa , Taimur Malik , Logan Jackson , Tom Lynch , Ronald Robinson , Frances Fournier , Hong Yang , Sukhjit Aujla
CPC classification number: C09K8/588 , C09K8/584 , C09K8/68 , C09K8/882 , C09K2208/28 , E21B43/20 , 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 inverted polymer solutions by inverting these LP compositions in an aqueous fluid. The resulting inverted 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 inverted polymer solutions in oil and gas operations, including enhanced oil recovery.
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公开(公告)号：US20200347285A1
公开(公告)日：2020-11-05
申请号：US16851875
申请日：2020-04-17
Applicant: Chevron U.S.A. Inc.
Inventor： Do Hoon Kim , Dennis Arun Alexis , Varadarajan Dwarakanath , David Espinosa , Taimur Malik , Logan Jackson , Tom Lynch , Ronald Robinson , Fraces Fournier , Hong Yang , Sukhjit Aujila
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 inverted polymer solutions by inverting these LP compositions in an aqueous fluid. The resulting inverted 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 inverted polymer solutions in oil and gas operations, including enhanced oil recovery.
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Patent Agency Ranking
公开(公告)号：US10822539B2
公开(公告)日：2020-11-03
申请号：US16709872
申请日：2019-12-10
Applicant: Chevron U.S.A. Inc.
Inventor： Do Hoon Kim , Dennis Arun Alexis , Varadarajan Dwarakanath , David Espinosa , Taimur Malik , Logan Jackson , Tom Lynch , Ronald Robinson , Frances Fournier , Hong Yang , Sukhjit Aujla
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 inverted polymer solutions by inverting these LP compositions in an aqueous fluid. The resulting inverted 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 inverted polymer solutions in oil and gas operations, including enhanced oil recovery.
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公开(公告)号：US20200165778A1
公开(公告)日：2020-05-28
申请号：US15781893
申请日：2016-12-07
Applicant: KEMIRA OYJ , CHEVRON U.S.A. INC.
Inventor： Logan Jackson , Thomas J. Lynch , Ronald Robinson , Frances Fournier , Hong Yang , Sukhjit Aujla , Do Hoon Kim , Dennis Arun Alexis , Varadarajan Dwarakanath , David Espinosa , Taimur Malik
Abstract: Provided herein are liquid polymer (LP) compositions comprising an acrylamide (co)polymer, as well as methods for preparing inverted polymer solutions by inverting these LP compositions in an aqueous fluid. The resulting inverted polymer solutions can have a concentration of acrylamide (co)polymer of from about 50 to about 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 inverted polymer solutions in dewatering, clarification, flocculation and/or thickening applications, and the like.
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公开(公告)号：US12215276B2
公开(公告)日：2025-02-04
申请号：US18160710
申请日：2023-01-27
Applicant: CHEVRON U.S.A. INC.
Inventor： Sujeewa S. Palayangoda , Kerry Kennedy Spilker , Sumitra Subrahmanyan , Gayani W. Pinnawala , Sophany Thach , Gregory A. Winslow , Dennis Arun Alexis , Harold Charles Linnemeyer , Timothy P. Theriot , Les Leszek Jackowski , Francesca Cibotti
Abstract: Described herein are methods of treating fluid including hydrocarbons, water, and polymer being produced from a hydrocarbon-bearing formation. The methods include 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 viscosity reducer is buffered at a pH of 7 or less. 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.
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公开(公告)号：US11084973B2
公开(公告)日：2021-08-10
申请号：US16851875
申请日：2020-04-17
Applicant: Chevron U.S.A. Inc.
Inventor： Do Hoon Kim , Dennis Arun Alexis , Varadarajan Dwarakanath , David Espinosa , Taimur Malik , Logan Jackson , Tom Lynch , Ronald Robinson , Frances Fournier , Hong Yang , Sukhjit Aujla
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 inverted polymer solutions by inverting these LP compositions in an aqueous fluid. The resulting inverted 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 inverted polymer solutions in oil and gas operations, including enhanced oil recovery.
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公开(公告)号：US09909053B2
公开(公告)日：2018-03-06
申请号：US14927069
申请日：2015-10-29
Applicant: Chevron U.S.A. Inc.
Inventor： Varadarajan Dwarakanath , Robert M. Dean , Do Hoon Kim , Dennis Arun Alexis , Sophany Thach , Taimur Malik , Anette Poulsen , Sumitra Subrahmanyan
Abstract: Embodiments of a polymer composition are disclosed for use in enhancing the production of oil from a formation. In one embodiment, the composition includes a powder polymer having an average molecular weight of 0.5 to 30 Million Daltons suspended in a water soluble solvent having an HLB of greater than or equal to 8 and selected from the group of surfactants, glycol ethers, alcohols, co-solvents, and mixtures thereof, at a weight ratio of powder polymer to water soluble solvent ranging from 20:80 to 80:20. The polymer composition is substantially anhydrous. The polymer composition is hydrated in an aqueous fluid for an injection solution in less than or equal to 4 hours containing a polymer concentration ranging from 100 ppm to 50,000 ppm and having a filter ratio of less than or equal to 1.5 at 15 psi using a 1.2 μm filter.
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