The condition of natural fracture closure was adaptable in the model.

该模型也同样适用裂缝自然闭合的情况。

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Natural fracture system is a fractal system, and an actual model can be built up by means of fractal theory.

天然裂缝系统是一个分形体系，可用分形理论建立裂缝分布的实际模型。

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For Coal Bed Methane (CBM) production, the pore passage must be established between natural fracture and well bore.

开采这种气体必须在煤层的天然裂缝与井筒之间建立起有效的连通孔道。

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Fracking involves the injection of water containing a surfactant and various other chemicals under high pressure into a source rock e.g. shale, causing the latter to fracture and release natural gas (principally methane).

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For more than six decades, gas companies have been using advanced technologies to hydraulically fracture and safely procure natural gas from up to two miles beneath the surface of the earth.

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In this process, after a well is drilled, pressurized water is injected into the well to fracture the shale and open fissures that enable natural gas to flow more freely out of the well.

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