大厚层致密砂砾岩油藏直井多段压裂开发

Science Technology and Engineering(2017)

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Abstract
针对纵向厚度比较大的低渗砂砾岩油藏,需选用直井压裂多段纵向裂缝的开发方式,采用数值模拟的方法展开研究.首先对比了分别采用分支水平井和多段压裂直井两种开发方式在厚层低渗油藏里的效果;然后分析了裂缝导流能力、供油面积、地层渗透率等产能影响因素,作出裂缝长度、Cf/Km(裂缝导流能力与地层渗透率之比)与累产的图版以用于压裂设计优化,同时研究了韵律与极差对开发的影响;最后研究了裂缝长度、高度、间距分布等布缝原则,以指导实际压裂方案.
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Key words
dense reservoir,multiple-fracturing,vertical well,numerical simulation,thick-layer
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