煤岩填砂裂缝导流能力实验研究  

The Experimental Study about the Conductivity of the Sand-pack Fracture in the Coal

作　　者：王长浩[1] 卢渊[1] 伊向艺[1,2] 邱小龙 戴磊[4] 都荣彬 董立超 

机构地区：[1]成都理工大学能源学院,成都610059 [2]油气藏地质及开发工程国家重点实验室,成都610059 [3]贵州省地矿局113地质大队,六盘水553000 [4]中国地质大学海洋学院,北京100083 [5]中石油长城钻探有限责任公司,北京100101 [6]中国石油长庆油田分公司第八采油厂工艺研究所,西安710000

出　　处：《科学技术与工程》2013年第35期10604-10607,10612,共5页Science Technology and Engineering

摘　　要：在煤岩填砂裂缝导流能力的实验研究中,分析研究煤粉粒径以及支撑剂铺砂浓度这两个方面对煤岩填砂裂缝导流能力的影响。从实验结果来看,裂缝导流能力随着围压的增加而降低。煤粉的粒径越小对裂缝的导流能力造成的损失越大。铺砂浓度越大,煤岩裂缝之间所产生的导流裂缝的缝宽越大,导流能力越好。铺砂浓度为0.5 kg/m2的裂缝导流能力随围压的变化非常明显,趋近于线性变化,对压力较为敏感。The impact of the coal particle size and the proppant sanding concentration on the conductivity is mainly studied in the experimental study about the conductivity of the sand-pack fracture in the coal. The fracture conductivity decreases with the increase of the confining pressure in the results. The smaller the coal particle size is, the loss of the fracture conductivity is larger. If the sanding concentration is bigger, the fracture conductivity in the coal will become larger leading to better conductivity. The conductivity at the sanding concentration of 0. 5 kg/m2 varies distinctly with the confining pressure which it tends to the linear change. On this occasion, the conductivity is very sensitive to the confining pressure.

关 键 词：填砂裂缝 导流能力 铺砂浓度 煤粉粒径 

分 类 号：TD823.71[矿业工程—煤矿开采] P611.18[矿业工程—矿山开采]