Dual anisotropism is a basic characteristic of porous medium. It has an effect on the flow of reservoir fluid and oil and gas production.
双重各向异性是多孔介质的一个基本性质，它对油藏流体的流动乃至油气生产都有一定的影响。
Different characteristic of oil bearing strata, especially permeability contrast can arise fingering of the water oil frontal during waterflooding stage in a regular multilayer reservoir.
常规多层油藏在注水开发时由于各储层物性差异特别是渗透率的差异，会引起各储层油水前缘的指进现象。
The oil in Taobao reservoir has the characteristic of viscous oil. The structure, lithology and fault are the main controlling factors of the formation of the reservoir.
套保油藏原油具有稠油特征，构造、岩性、断层是油藏形成的主要控制因素。
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