不动管柱分层压裂在DK22井的试验应用
Tuha Oil & Gas(2007)
Abstract
鄂北大牛地气田储层物性较差、含气层系多、单层自然产能低,必须进行压裂改造增产措施才能提高气产量。多层合压由于隔层应力不同,存在压裂改造不均的情况,影响压裂效果。为了使各单层得到均衡改造,充分发挥其生产潜力,提高单井产量,降低成本,改善区块整体开发效果,引进了一次不动管柱分层压裂工艺,并在DK22井试验成功。通过对压裂管柱、施工过程的分析,总结了施工的经验和不足。
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Key words
separate-layer fracturing,packer,experiment,gas field of the northern Ordos basin
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