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    • 20. 发明申请
    • Sub-Surface Coalbed Methane Well Enhancement Through Rapid Oxidation
    • 通过快速氧化的亚表层煤层气井增强
    • US20070240880A1
    • 2007-10-18
    • US11279593
    • 2006-04-13
    • Thomas Olsen
    • Thomas Olsen
    • E21B43/247E21B43/248
    • E21B43/116E21B43/006E21B43/117E21B43/248E21B43/26E21B43/267
    • Methods of stimulating production of coalbed methane from a coal-bearing formation are described, one method involving providing a perforation charge comprising a standard charge portion and a charge additive able to produce localized temporary oxidizing environments in perforations; perforating a coal-bearing formation with the perforation charge to form initial perforations defined by carbonaceous material, the initial perforations having localized temporary oxidizing environments in them, and initiating combustion of the carbonaceous material using the oxidizing environments, thus enlarging the initial perforations. Other methods involve perforating the coal-bearing formation with a standard perforation charge, thereby creating perforations; and treating the perforations with a composition creating temporary local oxidizing environments involving an oxidant in the perforations, and initiating combustion of carbonaceous material using the excess oxidant, thus enlarging the perforations.
    • 描述了从含煤地层刺激煤层气生产的方法,一种方法涉及提供包含标准电荷部分的穿孔电荷和能够在穿孔中产生局部临时氧化环境的电荷添加剂; 用穿孔电荷穿孔含煤地层以形成由碳质材料限定的初始穿孔,初始穿孔在其中具有局部的临时氧化环境,并且使用氧化环境引发碳质材料的燃烧,从而扩大初始穿孔。 其他方法包括用标准的穿孔电荷穿孔含煤地层,从而产生穿孔; 并且用组合物处理穿孔,产生临时的局部氧化环境,其涉及穿孔中的氧化剂,并且使用过量的氧化剂开始碳质材料的燃烧,从而扩大穿孔。