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    METHOD OF CONTROLLING SALINITY OF AN INJECTION WATER DURING COMMISSIONING OF AN INJECTION WELL
    1.
    发明申请
    METHOD OF CONTROLLING SALINITY OF AN INJECTION WATER DURING COMMISSIONING OF AN INJECTION WELL 审中-公开

    公开(公告)号：US20200248514A1

    公开(公告)日：2020-08-06

    申请号：US16637285

    申请日：2018-08-09

    申请人： BP Exploration Operating Company Limited

    发明人： Ian Ralph Collins ,  John William Couves ,  John Henry Crouch ,  John Dale Williams

    IPC分类号： E21B21/06 ,  E21B43/20 ,  E21B49/00

    摘要： An integrated system includes a desalination plant including a reverse osmosis (RO) array to produce an RO permeate blending stream and a nanofiltration (NF) array to produce an NF permeate blending stream. The integrated system also includes a blending system, a control unit, and an injection system for an injection well that penetrates an oil-bearing layer of a reservoir. The blending system is to blend the RO permeate blending stream and the NF permeate blending stream to produce a blended injection water stream. The control unit is to dynamically alter operation of the blending system to adjust amounts of at least one of the RO permeate blending stream and the NF permeate blending stream to alter the composition of the blended injection water stream from an initial composition to a target composition.

    Method of Controlling Salinity of a Low Salinity Injection Water
    2.
    发明申请
    Method of Controlling Salinity of a Low Salinity Injection Water 审中-公开

    公开(公告)号：US20200230554A1

    公开(公告)日：2020-07-23

    申请号：US16645426

    申请日：2018-09-12

    申请人： BP Exploration Operating Company Limited

    发明人： Ian Ralph Collins ,  John William Couves ,  John Henry Crouch ,  John Dale Williams

    IPC分类号： B01D61/02 ,  E21B43/20 ,  B01D61/08 ,  C02F1/44 ,  C02F1/68 ,  B01F3/08 ,  B01F15/04 ,  C09K8/58

    摘要： A method includes producing a first blended low salinity injection water for injection into at least one injection well that penetrates a first region of an oil-bearing reservoir and producing a second blended low salinity injection water for injection into at least one injection well that penetrates a second region of an oil-bearing reservoir. The reservoir rock of the first and second regions has first and second rock compositions, respectively, that present different risks of formation damage. The first and second blended low salinity injection waters comprise variable amounts of nanofiltration permeate and reverse osmosis permeate. The compositions of the first and second blended low salinity injection waters are maintained within first and second predetermined operating envelopes, respectively, that balance improving enhanced oil recovery from the first and second regions while reducing formation damage upon injecting the first and second blended low salinity injection waters into the oil-bearing reservoir.

    Method of Controlling Salinity of a Low Salinity Injection Water
    5.
    发明申请
    Method of Controlling Salinity of a Low Salinity Injection Water 有权

    公开(公告)号：US20210130193A1

    公开(公告)日：2021-05-06

    申请号：US16628633

    申请日：2018-07-12

    申请人： BP Exploration Operating Company Limited

    发明人： John William Couves ,  John Henry Crouch ,  John Dale Williams

    IPC分类号： C02F1/00 ,  C02F1/44 ,  B01D61/02 ,  B01D61/08 ,  B01D61/12 ,  B01F3/08 ,  B01F15/00 ,  E21B43/40 ,  E21B43/20 ,  C09K8/58

    摘要： An integrated system includes a desalination plant including a reverse osmosis (RO) array to produce an RO permeate blending stream and a nanofiltration (NF) array to produce an NF permeate blending stream. The integrated system also includes a blending system. Further, the integrated system includes a control unit. Still further, the integrated system includes an injection system for one or more injection wells that penetrate an oil-bearing layer of a reservoir. Moreover, the integrated system includes a production facility to separate fluids produced from one or more production wells that penetrate the oil-bearing layer of the reservoir and to deliver a produced water (PW) stream to the blending system. The blending system is configured to blend the RO permeate and NF permeate blending streams with the PW stream to produce a blended low salinity water stream. The control unit is configured to dynamically alter operation of the blending system to adjust amounts of at least one of the RO permeate blending stream and the NF permeate blending stream to maintain a composition of the blended low salinity water stream within a predetermined operating envelope.

    PROCESS OF SUPPLYING WATER OF CONTROLLED SALINITY
    8.
    发明申请
    PROCESS OF SUPPLYING WATER OF CONTROLLED SALINITY 审中-公开

    公开(公告)号：US20150083656A1

    公开(公告)日：2015-03-26

    申请号：US14560681

    申请日：2014-12-04

    申请人： BP Exploration Operating Company Limited

    发明人： John Dale Williams

    IPC分类号： B01D61/02 ,  B01D61/58 ,  B01D61/12 ,  C02F1/44 ,  B01D61/06

    CPC分类号： B01D61/022 ,  B01D61/025 ,  B01D61/027 ,  B01D61/06 ,  B01D61/12 ,  B01D61/58 ,  B01D63/12 ,  B01D2311/14 ,  B01D2311/16 ,  B01D2317/04 ,  B01D2317/08 ,  C02F1/44 ,  C02F1/441 ,  C02F1/442 ,  C02F1/444 ,  C02F2101/101 ,  C02F2103/08 ,  C02F2103/10 ,  C02F2209/05 ,  C02F2209/40 ,  C02F2301/043 ,  C02F2303/10 ,  Y02A20/131 ,  Y02W10/30

    摘要： A process of producing an injection water stream of controlled salinity and controlled sulfate anion content that is suitable for injection into an oil bearing formation of an oil reservoir, the process comprising the steps of: (a) feeding a source water having a total dissolved solids content in the range of 20,000 to 45,000 ppm and a sulfate anion concentration in the range of 1,000 to 4,000 ppm, preferably, 1,500 ppm to 4,000 ppm to a desalination plant that comprises a plurality of reverse osmosis (RO) membrane units and a plurality of nanofiltration (NF) membrane units wherein the source water is pressurised to a pressure in the range of 350 to 1250 psi absolute, and dividing the source water to provide a feed water for the RO membrane units (hereinafter “RO feed water”) and a feed water for the NF membrane units (hereinafter “NF feed water”); (b) if necessary, increasing the pressure of the RO feed water to a value in the range of 900 to 1250 psi absolute before introducing the RO feed water to the RO membrane units and withdrawing an RO permeate and an RO retentate from the RO membrane units wherein the RO membrane units are operated in either a single-pass, single-stage mode or in a single-pass, two-stage mode and wherein the recovery of RO permeate is in the range of 35 to 75% by volume, preferably, 35 to 60% by volume based on the volume of the RO feed water that is fed to the RO membrane units such that the RO permeate has a total dissolved solids contents of less than 250 ppm, and a sulfate anion concentration of less than 3 ppm; (c) if necessary, reducing the pressure of the NF feed water to a value in the range of 350 to 450 psi absolute before introducing the NF feed water to the NF membrane units and withdrawing an NF permeate and an NF retentate from the NF membrane units wherein the NF membrane units are operated in a single-pass, single-stage mode and wherein the NF membrane units are operated with a recovery of NF permeate in the range of 35 to 60% by volume based on the volume of the NF feed water that is fed to the NF membrane units such that the NF permeate has a total dissolved solids content in the range of 15,000 to 40,000 ppm, preferably, 15,000 to 35,000 ppm, and a sulfate anion concentration of less than 40 ppm, preferably less than 30 ppm; and (d) mixing at least a portion of the RO permeate and at least a portion of the NF permeate in a ratio in the range of 2:1 to 40:1, preferably, 4:1 to 27:1, in particular, 10:1 to 25:1 to provide an injection water having a total dissolved solids content in the range of 500 to 5,000 ppm, and a sulfate anion concentration of less than 7.5 ppm, preferably, less than 5 ppm, more preferably less than 3 ppm.

    Method of controlling salinity of a low salinity injection water
    9.
    发明授权
    Method of controlling salinity of a low salinity injection water 有权

    公开(公告)号：US11407654B2

    公开(公告)日：2022-08-09

    申请号：US16628633

    申请日：2018-07-12

    申请人： BP Exploration Operating Company Limited

    发明人： John William Couves ,  John Henry Crouch ,  John Dale Williams

    IPC分类号： C02F1/00 ,  B01D61/02 ,  B01D61/08 ,  B01D61/12 ,  C02F1/44 ,  C09K8/58 ,  E21B43/20 ,  E21B43/40 ,  B01F23/40 ,  B01F35/22 ,  B01F35/21 ,  C02F103/08 ,  C02F103/10 ,  B01F101/49

    摘要： An integrated system includes a desalination plant including a reverse osmosis (RO) array to produce an RO permeate blending stream and a nanofiltration (NF) array to produce an NF permeate blending stream. The integrated system also includes a blending system. Further, the integrated system includes a control unit. Still further, the integrated system includes an injection system for one or more injection wells that penetrate an oil-bearing layer of a reservoir. Moreover, the integrated system includes a production facility to separate fluids produced from one or more production wells that penetrate the oil-bearing layer of the reservoir and to deliver a produced water (PW) stream to the blending system. The blending system is configured to blend the RO permeate and NF permeate blending streams with the PW stream to produce a blended low salinity water stream. The control unit is configured to dynamically alter operation of the blending system to adjust amounts of at least one of the RO permeate blending stream and the NF permeate blending stream to maintain a composition of the blended low salinity water stream within a predetermined operating envelope.