Electrically Conductive Methods For Heating A Subsurface Formation To Convert Organic Matter Into Hydrocarbon Fluids
    2.
    发明申请
    Electrically Conductive Methods For Heating A Subsurface Formation To Convert Organic Matter Into Hydrocarbon Fluids 审中-公开
    用于加热表面形成以将有机物转化为烃流体的导电方法

    公开(公告)号:US20100101793A1

    公开(公告)日:2010-04-29

    申请号:US12550076

    申请日:2009-08-28

    IPC分类号: E21B36/00

    CPC分类号: E21B43/2401 E21B43/2405

    摘要: A method and system for heating a subsurface formation using electrical resistance heating is provided. In one aspect, two or more wellbores are provided that penetrate an interval of solid organic-rich rock within the subsurface formation. At least one fracture is established in the organic-rich rock from at least one of the wellbores, and electrically conductive material is provided in the fracture. In this way electrical communication is provided between the two or more wellbores. The electrically conductive material may include a first portion placed in contact with each of the two or more wellbores, and a second portion intermediate the two or more wellbores. The first portion has a first bulk resistivity while the second portion has a second bulk resistivity. The method also includes passing electric current through the fracture such that heat is generated by electrical resistivity within the electrically conductive material sufficient to pyrolyze at least a portion of the organic-rich rock into hydrocarbon fluids. The resistive heat generated within the first portion of the electrically conductive material is less than the heat generated within the second portion of the electrically conductive material.

    摘要翻译: 提供了使用电阻加热来加热地下地层的方法和系统。 在一个方面,提供两个或更多个井筒,其穿透地下地层内的固体富含有机物的岩石的间隔。 在来自至少一个井筒的富含有机物的岩石中建立至少一个裂缝,并且在断裂中提供导电材料。 以这种方式,在两个或更多个井筒之间提供电气通信。 导电材料可以包括与两个或更多个井眼中的每一个接触的第一部分和在两个或更多个井眼之间的第二部分。 第一部分具有第一体电阻率,而第二部分具有第二体电阻率。 该方法还包括使电流通过裂缝,使得由导电材料内的电阻产生的热量足以将富含有机物的岩石的至少一部分热解成烃流体。 在导电材料的第一部分内产生的电阻热小于在导电材料的第二部分内产生的热量。

    In situ co-development of oil shale with mineral recovery
    5.
    发明授权
    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:US07644993B2

    公开(公告)日:2010-01-12

    申请号:US11726651

    申请日:2007-03-22

    IPC分类号: E21B43/241

    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质,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。