鄂尔多斯盆地延长组页岩气藏裂隙连通条件研究Research of Fissure Communicating Conditions of Shale Gas Reservoir in the Yanchang Formation of the Ordos Basin
孔庆虎
摘要(Abstract):
页岩气储层具有低孔隙度、低渗透率的特性,储层基质向裂隙供气的能力较差。裂隙的有效性(即裂隙是否张开)在页岩气井压裂改造以及井位优选方面具有重大意义。在研究鄂尔多斯盆地中生界储层天然裂隙特征、地应力和岩石物理力学性质的基础上,建立了地应力控制裂隙有效性力学模型与判识天然裂隙滑移、错断的力学条件,并研究不同天然裂隙分布模式下的天然裂隙张开及连通的条件。充分利用天然裂隙,形成人工裂隙与天然裂隙交错的网络裂隙系统,从而达到提高单井产量的目的。
关键词(KeyWords): 页岩气;裂隙开启;裂隙有效性;地应力;三维莫尔应力圆;岩石力学
基金项目(Foundation):
作者(Author): 孔庆虎
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