付海峰;崔明月;邹憬;彭翼;刘云志;

• 1:中国石油勘探开发研究院廊坊分院

摘要(Abstract)：

针对在全三维水力压裂物理模拟实验中,水力裂缝实时扩展形态无法准确描述的问题,利用被动声波监测技术,研究水力裂缝在超大型(762cm×762cm×914cm)天然砂岩岩样中的扩展机理.结果表明:水力压裂裂缝呈经典的径向形态扩展,与实际裂缝形态一致;实验条件下,径向裂缝延伸净压力受断裂韧性的控制,与通常现场裂缝延伸净压力受流体黏性控制有很大区别.为与现场裂缝扩展进行相似对比,建议物模实验参数设计应适当提高液体黏度及排量,同时降低岩样断裂韧性.声波监测技术在超大尺寸水力压裂实验中的应用,可为现场水力压裂裂缝微地震监测技术应用提供指导.

关键词(KeyWords)：大型物理模拟;水力压裂;径向裂缝;断裂韧性;声波监测;长庆砂岩

Abstract:

Keywords:

基金项目(Foundation):国家科技重大专项(2011ZX05013-003)

作者(Author):付海峰;崔明月;邹憬;彭翼;刘云志;

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