On the interface where there are non-horizontal fractures, reflection coefficient of P-P wave has more extrema to show complexity and to fail to directly indicate fracture strike.

在由非水平裂隙构成的界面上，P-P波反射系数会出现更多的极值而变得较为复杂，且不能直接指示裂隙走向。

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The influences given by horizontal fractures with different length and width and the different rate of fracture conductivity on the transient pressure are compared through calculation.

通过计算比较了不同长宽比的水平裂缝对瞬态压力的影响，比较不同裂缝传导率对瞬态压力的影响。

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Hence, it is a very important problem to perform well test, evaluate the deliverability of the fractured horizontal well, and optimize the fracture parameters.

因此，对水平井压裂后的试井和产能评价，以及压裂水平井的裂缝参数优化是一个十分重要的问题。

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But XTO, with a smaller capital structure than the supermajors', is happy to invest in the neglected fields, using new techniques of 3-D imaging, horizontal drilling and so-called fracture stimulation--blowing open rock formations by injecting mudlike fluids down wells to get at big methane reservoirs.

FORBES: Oil & Gas Operations