Systems and methods for enhanced waterfloods
    1.
    发明授权
    Systems and methods for enhanced waterfloods 有权
    增强水驱的系统和方法

    公开(公告)号:US08656996B2

    公开(公告)日:2014-02-25

    申请号:US13286916

    申请日:2011-11-01

    IPC分类号: E21B43/16 E21B43/40

    摘要: Methods and systems for enhanced oil recovery from a subterranean formation are provided. An exemplary includes separating fluid produced from the subterranean formation into a first fluid stream that includes an aqueous stream containing multivalent ions. At least a portion of the multivalent ions in the first fluid are removed to form a second fluid stream and the second fluid stream is injected into the subterranean formation. The first fluid stream and the second fluid stream have substantially the same interfacial tension with a hydrocarbon and substantially the same kinematic viscosity, and the second fluid stream has a total concentration of ions greater than about 100,000 ppm.

    摘要翻译: 提供了从地下地层提高采收率的方法和系统。 示例性的包括将从地层产生的流体分离成包括含有多价离子的含水流的第一流体流。 第一流体中的至少一部分多价离子被去除以形成第二流体流,并将第二流体流注入到地层中。 第一流体流和第二流体流具有与烃基本上相同的界面张力和基本上相同的运动粘度,并且第二流体流具有大于约100,000ppm的离子的总浓度。

    Systems and methods for enhanced waterfloods
    2.
    发明授权
    Systems and methods for enhanced waterfloods 有权
    增强水驱的系统和方法

    公开(公告)号:US08657000B2

    公开(公告)日:2014-02-25

    申请号:US13286911

    申请日:2011-11-01

    IPC分类号: E21B43/24 E21B43/40

    摘要: Methods and systems for enhancing oil recovery from a subterranean formation comprising at least a first region and a second region are provided. An exemplary method includes creating an injection stream by adding a salt to a water stream to increase a concentration of an ion and injecting the injection stream into the subterranean formation through a first injection well in the first region of the subterranean formation. Fluid is produced from the subterranean formation and separated to generate an aqueous stream comprising at least a portion of the ion. The salt is added to the aqueous stream to adjust the concentration of the ion in the aqueous stream to a desired level. The aqueous stream is injected into the subterranean formation through a second injection well in the second region of the subterranean formation.

    摘要翻译: 提供了用于从包括至少第一区域和第二区域的地下地层中提高石油采收率的方法和系统。 示例性方法包括通过向水流中加入盐以增加离子的浓度并通过第一注入井在地层的第一区域中将注射流注入到地层中来产生注入流。 流体从地层产生并分离以产生包含至少一部分离子的水流。 将盐加入到水流中以将水流中的离子浓度调节到所需的水平。 通过在地层的第二区域中的第二注入井将含水流注入到地下地层中。

    Systems and Methods For Enhanced Waterfloods
    3.
    发明申请
    Systems and Methods For Enhanced Waterfloods 有权
    增强水驱的系统和方法

    公开(公告)号:US20120125603A1

    公开(公告)日:2012-05-24

    申请号:US13286901

    申请日:2011-11-01

    IPC分类号: E21B43/20

    摘要: Methods for enhanced oil recovery from a subterranean formation including adding a first salt to a first aqueous stream to form a first injection stream with an increased concentration of a first ion. A second salt is added to a second aqueous stream to form a second injection stream with an increased concentration of a second ion. The second injection stream is of different composition than the first injection stream and the first injection stream and the second injection stream have substantially the same interfacial tension with a hydrocarbon and substantially the same kinematic viscosity. The first injection stream is injected into the formation at a first time and the second injection stream is injected into the formation at a second time. The first injection stream and second injection stream contact at least some overlapping portion of the formation. Oil is recovered from the overlapping portion of the formation.

    摘要翻译: 用于从地层中提高采油的方法,包括向第一含水流中加入第一盐以形成具有增加浓度的第一离子的第一注入流。 向第二含水物流中加入第二种盐,以形成具有增加浓度的第二离子的第二注入物流。 第二注入流的组成不同于第一注入流,第一注入流和第二注入流具有与烃基本相同的界面张力和基本上相同的运动粘度。 第一注入流在第一次注入到地层中,第二次注入流在第二次被注入到地层中。 第一注入流和第二注入流接触地层的至少一些重叠部分。 从地层的重叠部分回收油。

    Systems and methods for enhanced waterfloods
    4.
    发明授权
    Systems and methods for enhanced waterfloods 有权
    增强水驱的系统和方法

    公开(公告)号:US08739869B2

    公开(公告)日:2014-06-03

    申请号:US13286901

    申请日:2011-11-01

    IPC分类号: E21B43/16 E21B43/40

    摘要: Methods for enhanced oil recovery from a subterranean formation including adding a first salt to a first aqueous stream to form a first injection stream with an increased concentration of a first ion. A second salt is added to a second aqueous stream to form a second injection stream with an increased concentration of a second ion. The second injection stream is of different composition than the first injection stream and the first injection stream and the second injection stream have substantially the same interfacial tension with a hydrocarbon and substantially the same kinematic viscosity. The first injection stream is injected into the formation at a first time and the second injection stream is injected into the formation at a second time. The first injection stream and second injection stream contact at least some overlapping portion of the formation. Oil is recovered from the overlapping portion of the formation.

    摘要翻译: 用于从地层中提高采油的方法,包括向第一含水流中加入第一盐以形成具有增加浓度的第一离子的第一注入流。 向第二含水物流中加入第二种盐,以形成具有增加浓度的第二离子的第二注入物流。 第二注入流的组成不同于第一注入流,第一注入流和第二注入流具有与烃基本相同的界面张力和基本上相同的运动粘度。 第一注入流在第一次注入到地层中,第二次注入流在第二次被注入到地层中。 第一注入流和第二注入流接触地层的至少一些重叠部分。 从地层的重叠部分回收油。

    Systems and Methods For Enhanced Waterfloods
    5.
    发明申请
    Systems and Methods For Enhanced Waterfloods 有权
    增强水驱的系统和方法

    公开(公告)号:US20120125604A1

    公开(公告)日:2012-05-24

    申请号:US13286911

    申请日:2011-11-01

    IPC分类号: E21B43/22

    摘要: Methods and systems for enhancing oil recovery from a subterranean formation comprising at least a first region and a second region are provided. An exemplary method includes creating an injection stream by adding a salt to a water stream to increase a concentration of an ion and injecting the injection stream into the subterranean formation through a first injection well in the first region of the subterranean formation. Fluid is produced from the subterranean formation and separated to generate an aqueous stream comprising at least a portion of the ion. The salt is added to the aqueous stream to adjust the concentration of the ion in the aqueous stream to a desired level. The aqueous stream is injected into the subterranean formation through a second injection well in the second region of the subterranean formation.

    摘要翻译: 提供了用于从包括至少第一区域和第二区域的地下地层中提高石油采收率的方法和系统。 示例性方法包括通过向水流中加入盐以增加离子的浓度并通过第一注入井在地层的第一区域中将注射流注入到地层中来产生注入流。 流体从地层产生并分离以产生包含至少一部分离子的水流。 将盐加入到水流中以将水流中的离子浓度调节到所需的水平。 通过在地层的第二区域中的第二注入井将含水流注入到地下地层中。

    Systems and Methods For Enhanced Waterfloods
    6.
    发明申请
    Systems and Methods For Enhanced Waterfloods 有权
    增强水驱的系统和方法

    公开(公告)号:US20120125605A1

    公开(公告)日:2012-05-24

    申请号:US13286916

    申请日:2011-11-01

    IPC分类号: E21B43/22

    摘要: Methods and systems for enhanced oil recovery from a subterranean formation are provided. An exemplary includes separating fluid produced from the subterranean formation into a first fluid stream that includes an aqueous stream containing multivalent ions. At least a portion of the multivalent ions in the first fluid are removed to form a second fluid stream and the second fluid stream is injected into the subterranean formation. The first fluid stream and the second fluid stream have substantially the same interfacial tension with a hydrocarbon and substantially the same kinematic viscosity, and the second fluid stream has a total concentration of ions greater than about 100,000 ppm.

    摘要翻译: 提供了从地下地层提高采收率的方法和系统。 示例性的包括将从地层产生的流体分离成包括含有多价离子的含水流的第一流体流。 第一流体中的至少一部分多价离子被去除以形成第二流体流,并将第二流体流注入到地层中。 第一流体流和第二流体流具有与烃基本上相同的界面张力和基本上相同的运动粘度,并且第二流体流具有大于约100,000ppm的离子的总浓度。