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公开(公告)号：US20220033704A1
公开(公告)日：2022-02-03
申请号：US17380502
申请日：2021-07-20
Applicant: Chevron U.S.A. Inc.
Inventor： Mark Charlesworth , Christopher John Kalli , Jon Even Vale , Brendan Francis Graham , Eric Freemantle May
Abstract: Provided herein are methods for inhibiting the formation of scale on equipment in contact with a produced fluid containing a scale-forming divalent cation. Such methods can comprise adding an activated alginate to the produced fluid in an amount effective to react with the divalent cation in the produced fluid to form an activated alginate complex; and separating the activated alginate complex from the produced fluid. Methods can further comprise recycling the activated alginate from the activated alginate complex by dissolving the activated alginate complex. The activated alginate can be prepared by thermally modifying an alginate precursor at a temperature of from 80° C. to 180° C. for a period of at least 24 hours. The activated alginate can be in the form of a solution including 0.1% to 10% by weight activated alginate, based on the total weight of the solution. The activated alginate can exhibit increased solubility in water and kinetics of complexation with the divalent cation compared to the alginate precursor.
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Patent Agency Ranking
公开(公告)号：US11097968B2
公开(公告)日：2021-08-24
申请号：US16570394
申请日：2019-09-13
Applicant: Chevron U.S.A. Inc.
Inventor： Mark Charlesworth , Christopher John Kalli , David Glynn Thomas , Wei Shi , Brendan Francis Graham , Zachary Mark Aman , Eric Freemantle May
IPC: C02F5/02 , C02F1/66 , C02F1/68 , C02F5/10 , C02F101/10 , C02F103/10 , C02F1/24 , C02F1/38 , C02F103/36
Abstract: A method for inhibiting the formation, deposition and adherence of scale to metallic and other surfaces in the equipment, vessels and/or piping of facilities for the handling of oil and gas produced fluid is disclosed. An effective scale inhibiting amount of alginate is added to a produced fluid containing a scale-forming divalent cation. The alginate effectively cross-links with a scale-forming divalent cation, e.g., calcium, forming an alginate gel for subsequent separation and removal from the produced fluid.
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公开(公告)号：US10427963B2
公开(公告)日：2019-10-01
申请号：US15010550
申请日：2016-01-29
Applicant: Chevron U.S.A. Inc.
Inventor： Mark Charlesworth , Christopher John Kalli , David Glynn Thomas , Wei Shi , Brendan Francis Graham , Zachary Mark Aman , Eric Freemantle May
IPC: C02F5/02 , C02F1/66 , C02F1/68 , C02F5/10 , C02F101/10 , C02F103/10 , C02F1/24 , C02F1/38 , C02F103/36
Abstract: A method for inhibiting the formation, deposition and adherence of scale to metallic and other surfaces in the equipment, vessels and/or piping of facilities for the handling of oil and gas produced fluid is disclosed. An effective scale inhibiting amount of alginate is added to a produced fluid containing a scale-forming divalent cation. The alginate effectively cross-links with a scale-forming divalent cation, e.g., calcium, forming an alginate gel for subsequent separation and removal from the produced fluid.
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公开(公告)号：US20200002206A1
公开(公告)日：2020-01-02
申请号：US16570394
申请日：2019-09-13
Applicant: Chevron U.S.A. Inc.
Inventor： Mark Charlesworth , Christopher John Kalli , David Glynn Thomas , Wei Shi , Brendan Francis Graham , Zachary Mark Aman , Eric Freemantle May
Abstract: A method for inhibiting the formation, deposition and adherence of scale to metallic and other surfaces in the equipment, vessels and/or piping of facilities for the handling of oil and gas produced fluid is disclosed. An effective scale inhibiting amount of alginate is added to a produced fluid containing a scale-forming divalent cation. The alginate effectively cross-links with a scale-forming divalent cation, e.g., calcium, forming an alginate gel for subsequent separation and removal from the produced fluid.
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公开(公告)号：US10539522B2
公开(公告)日：2020-01-21
申请号：US15574476
申请日：2016-05-16
Applicant: The University of Western Australia , Chevron U.S.A. Inc.
Inventor： Eric Freemantle May , Michael Leslie Johns , Matthew Roshan Joseph Carroll , Einar Orn Fridjonsson , Paul Louis Stanwix , Brendan Francis Graham , Christopher John Kalli , Paul Steven Hofman
Abstract: A method for analysis of hydrocarbons in water, the method comprising the steps of: extracting the hydrocarbons from a water sample; introducing the extracted hydrocarbons to a solvent system; determining the relative concentrations of the hydrocarbons in the solvent system and at least one solvent in the solvent system by 1H NMR analysis, wherein the solvent system comprises at least one solvent with a 1H NMR signal distinguishable from a 1H NMR signal of the hydrocarbons.
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公开(公告)号：US20160221849A1
公开(公告)日：2016-08-04
申请号：US15010550
申请日：2016-01-29
Applicant: Chevron U.S.A. Inc.
Inventor： Mark Charlesworth , Christopher John Kalli , David Glynn Thomas , Wei Shi , Brendan Francis Graham , Zachary Mark Aman , Eric Freemantle May
CPC classification number: C02F5/02 , C02F1/24 , C02F1/38 , C02F1/66 , C02F1/68 , C02F5/10 , C02F2101/10 , C02F2101/101 , C02F2103/10 , C02F2103/365 , C02F2303/22
Abstract: A method for inhibiting the formation, deposition and adherence of scale to metallic and other surfaces in the equipment, vessels and/or piping of facilities for the handling of oil and gas produced fluid is disclosed. An effective scale inhibiting amount of alginate is added to a produced fluid containing a scale-forming divalent cation. The alginate effectively cross-links with a scale-forming divalent cation, e.g., calcium, forming an alginate gel for subsequent separation and removal from the produced fluid.
Abstract translation: 公开了一种用于抑制用于处理油气产生流体的设备，容器和/或管道中的金属和其它表面的氧化皮的形成，沉积和粘附的方法。 将含有鳞屑的二价阳离子的产生的流体中加入有效量的海藻酸盐。 藻酸盐与形成规模的二价阳离子（例如钙）有效地交联，形成藻酸盐凝胶，用于随后从产生的流体中分离和除去。
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