Double Hydraulic Fracturing Methods
    5.
    发明申请
    Double Hydraulic Fracturing Methods 审中-公开
    双水压压裂方法

    公开(公告)号:US20130306315A1

    公开(公告)日:2013-11-21

    申请号:US13825107

    申请日:2011-10-19

    IPC分类号: E21B43/267

    CPC分类号: E21B43/267

    摘要: A method for hydraulically fracturing subterranean formations in a manner resulting in improved propping of fractures, particularly in ductile rock formations such as gas-containing shales having a high clay content. The method allows for improved hydrocarbon production. The method involves injecting a first fluid having a first proppant concentration into the subsurface formation to form a fracture, reducing the pressure in the fracture and allowing the fracture to substantially close, and injecting a second fluid having a second proppant concentration into the fracture to re-open the fracture. The second proppant concentration is greater than the first proppant concentration. A portion of the proppant is effectively retained in the reopened fracture.

    摘要翻译: 一种用于水力压裂地下地层的方法,导致改进的骨折支撑,特别是在延性岩层中,例如具有高粘土含量的含气页岩。 该方法允许改进碳氢化合物生产。 该方法包括将具有第一支撑剂浓度的第一流体注入到地下地层中以形成断裂,降低断裂中的压力并允许断裂基本上封闭,并将具有第二支撑剂浓度的第二流体注入裂缝中 打开骨折。 第二支撑剂浓度大于第一支撑剂浓度。 支撑剂的一部分被有效地保留在重新开放的骨折中。

    Double hydraulic fracturing methods
    6.
    发明授权
    Double hydraulic fracturing methods 有权
    双水压裂法

    公开(公告)号:US09328600B2

    公开(公告)日:2016-05-03

    申请号:US13825107

    申请日:2011-10-19

    IPC分类号: E21B43/267

    CPC分类号: E21B43/267

    摘要: A method for hydraulically fracturing subterranean formations in a manner resulting in improved propping of fractures, particularly in ductile rock formations such as gas-containing shales having a high clay content. The method allows for improved hydrocarbon production. The method involves injecting a first fluid having a first proppant concentration into the subsurface formation to form a fracture, reducing the pressure in the fracture and allowing the fracture to substantially close, and injecting a second fluid having a second proppant concentration into the fracture to re-open the fracture. The second proppant concentration is greater than the first proppant concentration. A portion of the proppant is effectively retained in the reopened fracture.

    摘要翻译: 一种用于水力压裂地下地层的方法,导致改进的骨折支撑,特别是在延性岩层中,例如具有高粘土含量的含气页岩。 该方法允许改进碳氢化合物生产。 该方法包括将具有第一支撑剂浓度的第一流体注入到地下地层中以形成断裂,降低断裂中的压力并允许断裂基本上闭合,并将具有第二支撑剂浓度的第二流体注入裂缝中 打开骨折。 第二支撑剂浓度大于第一支撑剂浓度。 支撑剂的一部分被有效地保留在重新开放的骨折中。

    In situ co-development of oil shale with mineral recovery
    9.
    发明申请
    In situ co-development of oil shale with mineral recovery 有权
    油页岩与矿物回收的原位共同开发

    公开(公告)号:US20070246994A1

    公开(公告)日:2007-10-25

    申请号:US11726651

    申请日:2007-03-22

    IPC分类号: E21B43/00 E21B41/02

    摘要: A method of producing hydrocarbon fluids from a subsurface organic-rich rock formation, for example an oil shale formation, in which the oil shale formation contains water-soluble minerals, for example nahcolite, is provided. In one embodiment, the method includes the step of heating the organic-rich rock formation in situ. Optionally, this heating step may be performed prior to any substantial removal of water-soluble minerals from the organic-rich rock formation. In accordance with the method, the heating of the organic-rich rock formation both pyrolyzes at least a portion of the formation hydrocarbons, for example kerogen, to create hydrocarbon fluids, and converts at least a portion of the water-soluble minerals, for example, converts nahcolite to soda ash. Thereafter, the hydrocarbon fluids are produced from the formation.

    摘要翻译: 提供了一种从地下富含有机物岩层(例如油页岩形成)生产烃流体的方法,其中油页岩形成物含有水溶性矿物,例如纳氏沸石。 在一个实施方案中,该方法包括在原位加热富含有机物的岩层的步骤。 任选地,该加热步骤可以在从富含有机物的岩层中显着除去水溶性矿物之前进行。 根据该方法,富含有机物的岩层的加热都会将至少一部分地层烃(例如油母质)热解,以产生烃流体,并且转化至少一部分水溶性矿物,例如 ,将nahcolite转化为苏打灰。 此后,从地层中产生烃流体。