“三低”油藏重复压裂技术研究与应用

Tuha Oil & Gas(2012)

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Abstract
牛圈湖西山窑组油藏属于特低渗、低压、低流度的典型"三低"砂岩油藏,所有油井需要压裂投产,但一段时间后,许多油井产液量大幅降低,表现为供液不足。通过研究重复压裂机理,分析原有裂缝失效的原因,提出了重复压裂的系统评估方法,在分析前期压裂效果的基础上提出了重复压裂的选井选层的原则,并制定了高砂比、加大陶粒用量等工艺技术。重复压裂技术现场实施,取得了较好的增产效果。
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Key words
technology design,"three low" reservoir,selecting well and selecting layer principle,mechanism,multiple fracturing,field application
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