邹雨时,张士诚,马新仿

• 1:中国石油大学(北京)石油工程教育部重点实验室

摘要(Abstract)：

利用页岩体内部天然裂缝劈裂形成粗糙导流岩板,测试了页岩气藏清水压裂网络裂缝的导流能力,重点研究了裂缝剪切错位对页岩裂缝导流能力的影响.实验结果表明,不同支撑形式裂缝的导流能力差异显著,裂缝中缺少支撑剂时,需要形成剪切错位才能提供足够的导流能力,否则非支撑裂缝导流能力不足以利用复杂裂缝网络.非支撑裂缝导流能力至少在2个数量级内变化,主要受错位程度、粗糙度、岩石力学性质等影响.粗糙度较大的剪切裂缝更易形成高导流能力,但导流能力与粗糙度并没有绝对相关性,粗糙度对裂缝导流能力仅在低闭合应力条件下影响显著.低硬度页岩的剪切裂缝导流能力可比高硬度页岩低一个数量级以上.

关键词(KeyWords)： 页岩气藏;剪切裂缝;导流能力;裂缝网络;粗糙度

Abstract:

Keywords:

基金项目(Foundation): 国家重大科技专项“3000型成套压裂装备研制及应用示范工程”(编号:2011ZX05048)

作者(Author): 邹雨时,张士诚,马新仿

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