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本文主要针对YT油田DN组多薄层油藏测试改造中存在的问题,分析地层不出液的原因,从油藏构造、储层特征以及测井、压裂、抽汲等诸环节进行分析,针对油层测井解释结果同测试结果存在的差异性,对“薄层油层的压裂工艺技术”采取合作攻关,分别开展压裂优化设计、提高导流能力优化技术及压裂有效加砂工艺研究,认识并总结改善压裂效果的关键技术;同时在压裂返排时机、返排工艺方面也进行了研究;最后综合以上研究成果,提出测试改造具体措施方案。
In this paper, the problems existing in the testing and rebuilding of multi-thin reservoirs in DN group of YT Oilfield are analyzed. The reasons of non-liquid formation in the formation are analyzed. From the aspects of reservoir structure, reservoir characteristics, logging, fracturing and pumping, In view of the differences between interpretation results and test results of oil well logging, we conducted cooperative research on “fracturing technology of thin-layer reservoir”, carried out optimization design of fracturing, improved optimization of diversion capability, Technology research, understanding and summarizes the key technologies to improve the fracturing effect; at the same time in fracturing back to the timing, back to the process also conducted research; Finally, the above research results, put forward to test the specific measures to transform programs.