页岩储层支撑裂缝导流能力实验研究

发布时间：2018-12-17 02:14

【摘要】：为深入了解页岩储层支撑裂缝导流能力的大小及裂缝有效性,开展了支撑剂粒径、类型、铺置方式对导流能力影响的实验研究,并进行了循环应力加载模拟开、关井过程引起的地层应力波动对页岩储层导流能力影响的实验研究。结果表明:低闭合压力下,粒径越大,导流能力越高,随着闭合压力的增大,大粒径支撑剂导流能力下降迅速;支撑剂均匀铺置与完全混合铺置相比,前者导流能力较好;开、关井过程引起的地层应力波动对页岩导流能力的影响较大。以上因素的研究对压裂方案设计优化和现场施工具有一定的理论指导意义。
[Abstract]:In order to deeply understand the size and validity of fracture conductivity in shale reservoir, the influence of particle size, type and placement mode of proppant on conductivity is studied experimentally, and the cyclic stress loading simulation is carried out. Experimental study on the influence of formation stress fluctuation caused by shut-in on the flow conductivity of shale reservoir. The results show that under low closure pressure, the larger the particle size, the higher the conductivity. With the increase of closing pressure, the flow conductivity of large particle size proppant decreases rapidly, and the flow conductivity of the former is better than that of complete mixing. The fluctuation of formation stress caused by opening and closing has a great influence on shale conductivity. The study of the above factors has certain theoretical significance for fracturing scheme design optimization and field operation.
【作者单位】：中国石油大学(华东)石油工程学院;中国石油勘探开发研究院廊坊分院;中国石油天然气集团公司油气藏改造重点实验室;
【基金】：国家科技重大专项“大型油气田及煤层气开发”课题“页岩气储层增产改造技术”(2012ZX05018-004)
【分类号】：TE357.12

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