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公开(公告)号：US20180028978A1
公开(公告)日：2018-02-01
申请号：US15730797
申请日：2017-10-12
Applicant: Chevron U.S.A. Inc.
Inventor： Cheng Chen
CPC classification number: B01D61/58 , B01D61/022 , B01D61/025 , B01D61/04 , B01D61/142 , B01D61/145 , B01D2311/06 , B01D2311/18 , B01D2311/25 , B01D2311/2623 , B01D2311/268 , B01D2317/025 , C02F1/20 , C02F1/24 , C02F1/42 , C02F1/441 , C02F1/442 , C02F1/444 , C02F1/52 , C02F1/5245 , C02F1/66 , C02F5/00 , C02F5/025 , C02F5/06 , C02F5/083 , C02F9/00 , C02F2001/007 , C02F2001/425 , C02F2101/10 , C02F2101/108 , C02F2101/16 , C02F2101/32 , C02F2103/10 , C02F2209/06 , C02F2209/10 , C02F2209/11 , C02F2303/22 , E21B41/00 , E21B43/20 , E21B43/24 , E21B43/34 , E21B43/40
Abstract: Produced water from a crude oil or natural gas production process is purified using a membrane purification system for petroleum production, agricultural, commercial and domestic uses. The produced water is pretreated to remove, at least, particulates and oil from the produced water. The minimally pretreated water is then purified in a membrane purification system, that is operated at conditions such that membrane scaling is reduced or prevented. In particular, the membrane purification system is operated to maintain the turbidity of clarified water feed to the system or intermediate aqueous streams that are cascading through the membrane purification system. Ensuring that the turbidity of the reject streams generated in the membrane system are useful in achieving long membrane operating life.
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公开(公告)号：US20190299162A1
公开(公告)日：2019-10-03
申请号：US15940401
申请日：2018-03-29
Applicant: Chevron U.S.A. Inc.
Inventor： Cheng Chen
Abstract: A method for treating water high in sulfate includes passing the water at a temperature of 10° C. to 45° C. through a nanofiltration membrane module and a reverse osmosis membrane module in series such that the retentate stream from the nanofiltration membrane module is fed to the reverse osmosis membrane module. A first permeate stream from the nanofiltration membrane module has at least 90% lower sulfate content than the feed stream. A second permeate stream from the reverse osmosis membrane module has at least 95% lower sulfate content than the retentate stream from the nanofiltration membrane module. The first and second permeate streams are combined to form a treated stream containing less than 40 ppm sulfate. A system including the nanofiltration and reverse osmosis membrane modules in series is also disclosed.
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公开(公告)号：US10906001B2
公开(公告)日：2021-02-02
申请号：US15730797
申请日：2017-10-12
Applicant: Chevron U.S.A. Inc.
Inventor： Cheng Chen
IPC: B01D61/58 , B01D61/02 , B01D61/14 , E21B41/00 , C02F1/44 , C02F9/00 , C02F5/06 , E21B43/40 , E21B43/20 , C02F1/42 , C02F1/66 , E21B43/24 , E21B43/34 , C02F1/20 , C02F5/02 , C02F5/08 , C02F5/00 , C02F1/24 , C02F103/10 , C02F101/10 , C02F101/16 , C02F1/00 , C02F101/32 , C02F1/52 , B01D61/04
Abstract: Produced water from a crude oil or natural gas production process is purified using a membrane purification system for petroleum production, agricultural, commercial and domestic uses. The produced water is pretreated to remove, at least, particulates and oil from the produced water. The minimally pretreated water is then purified in a membrane purification system, that is operated at conditions such that membrane scaling is reduced or prevented. In particular, the membrane purification system is operated to maintain the turbidity of clarified water feed to the system or intermediate aqueous streams that are cascading through the membrane purification system. Ensuring that the turbidity of the reject streams generated in the membrane system are useful in achieving long membrane operating life.
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公开(公告)号：US20150376033A1
公开(公告)日：2015-12-31
申请号：US14838421
申请日：2015-08-28
Applicant: Chevron U.S.A. Inc.
Inventor： Fan-Sheng Teddy Tao , Ronald David Hobbs , Cheng Chen , Sumitra Subrahmanyan
CPC classification number: C02F1/44 , B01D61/022 , B01D61/025 , B01D61/04 , B01D61/58 , B01D2311/25 , B01D2311/268 , B01D2317/025 , C02F1/20 , C02F1/24 , C02F1/42 , C02F1/441 , C02F1/442 , C02F1/444 , C02F1/52 , C02F1/5236 , C02F1/5245 , C02F1/66 , C02F5/00 , C02F5/06 , C02F5/083 , C02F9/00 , C02F11/14 , C02F2001/007 , C02F2001/425 , C02F2101/32 , C02F2103/10 , C02F2103/365 , C02F2209/06 , C02F2209/11 , C02F2303/22 , E21B43/40
Abstract: Produced water from a crude oil or natural gas production process is purified using a membrane purification system for petroleum production, agricultural, commercial and domestic uses. The produced water is pretreated to remove, at least, particulates and oil from the produced water. The minimally pretreated water is then purified in a membrane purification system that is operated at conditions such that membrane scaling is reduced or prevented. In particular, the membrane purification system is operated to maintain the turbidity of clarified water feed to the system or intermediate aqueous streams that are cascading through the membrane purification system. Ensuring that the turbidity of the reject streams generated in the membrane system are useful in achieving long membrane operating life.
Abstract translation: 原油或天然气生产过程中生产的水由石油生产，农业，商业和家用用膜净化系统进行纯化。 生产的水经预处理，至少从生产的水中除去颗粒物和油。 然后将微量预处理的水在膜净化系统中纯化，所述膜纯化系统在使得降低或防止膜结垢的条件下操作。 特别地，操作膜净化系统以保持澄清的水进料的浊度到通过膜净化系统级联的系统或中间含水物流。 确保在膜系统中产生的废液流的浊度可用于实现长膜使用寿命。
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