川西地区小井眼水平井多级压裂技术研究及应用

Petroleum Geology and Engineering(2014)

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Abstract
水平井多级压裂技术是提高致密砂岩气藏单井产能和气藏整体采出程度的有效手段.川西致密砂岩气藏水 平井具有井眼小、位垂比大等特点,压裂管柱下入难度大,压裂改造级数受限,实施套管水平井大规模多级数压裂的难度极大.通过改进套管封隔器结构、优化压裂施工管柱,管柱下入并筒顺利,并优化了射孔方式和多级多缝压裂施工参数.该水平井多级压裂技术的应用增加了川西小井眼水平井的压裂改造级数,保证了套管水平井大规模多级压裂的顺利实施.
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