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    Method for enhancing the recovery of methane from a solid carbonaceous subterranean formation
    1.
    发明授权
    Method for enhancing the recovery of methane from a solid carbonaceous subterranean formation 失效
    从固体碳质地层提高甲烷回收率的方法

    公开(公告)号：US5417286A

    公开(公告)日：1995-05-23

    申请号：US174303

    申请日：1993-12-29

    申请人： Ian D. Palmer ,  Dan Yee

    发明人： Ian D. Palmer ,  Dan Yee

    IPC分类号： E21B43/00 ,  E21B43/26

    CPC分类号： E21B43/006 ,  E21B43/26

    摘要： A method for improving the recovery of methane from a solid carbonaceous subterranean formation penetrated by a wellbore, the method comprising the steps of introducing a first fluid into the formation which sorbs to the formation, allowing at least a portion of the first fluid to sorb to the formation, introducing a chemically different second fluid into the formation at a pressure higher than the parting pressure of the formation, relieving pressure within the formation to produce shear failure within the formation, and repeating the introduction of second fluid and the relieving of pressure until a desired permeability of the formation is obtained.

    摘要翻译： 一种用于改善由井筒渗透的固体含碳地层的甲烷回收的方法，所述方法包括以下步骤：将第一流体引入所述地层中，所述第一流体吸附到所述地层，允许所述第一流体的至少一部分吸附至 形成，将化学上不同的第二流体以比地层的分型压力高的压力引入地层，释放地层内的压力，以在地层内产生剪切破坏，并重复引入第二流体和释放压力直到 获得所需地层的渗透率。

    Fracture stimulation of coal degasification wells
    3.
    发明授权
    Fracture stimulation of coal degasification wells 失效
    煤脱气井断裂刺激

    公开(公告)号：US4993491A

    公开(公告)日：1991-02-19

    申请号：US342407

    申请日：1989-04-24

    申请人： Ian D. Palmer ,  David C. Gardner ,  Ralph W. Veatch ,  G. Michael Kutas

    发明人： Ian D. Palmer ,  David C. Gardner ,  Ralph W. Veatch ,  G. Michael Kutas

    IPC分类号： E21B43/00 ,  E21B43/267

    CPC分类号： E21B43/267 ,  E21B43/006

    摘要： This invention pertains to a novel method of fracturing subterranean coal formations as a means for stimulating the production of coalbed methane. A highly conductive proppant pack is emplaced in the fracture during the fracturing treatment that has a particle size gradient ranging from about 40/70 mesh at the leading tip of the fracture to about 12/20 mesh at the trailing base of the fracture. The fracturing process is conventional in the sense that the materials and equipment used in the process are well known. The manner in which such materials and equipment are used to fracture coal degasification wells is new.

    摘要翻译： 本发明涉及一种将地下煤层压裂的新方法，作为刺激煤层气生产的手段。 在压裂处理期间，高导电性支撑剂组件被放置在断裂中，其具有在断裂的前端处的约40/70目的粒度梯度，在断裂的尾部基底处的约12/20目。 压裂过程是常规的，因为该方法中使用的材料和设备是众所周知的。 这种材料和设备用于破坏煤脱气井的方式是新的。