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由于八区乌尔禾组裸眼井段较长,同一裸眼井段存多套以上的压力系统,八道湾组参考压力系数为0.66~1.69,克下组参考压力系数为1.27乌尔禾原始地层压力系数为1.35,八道湾组易放生溢流及井喷等复杂事故,而乌尔禾组地层压力较八道湾组偏低易发生井漏复杂,进入目的层后极易发生井漏复杂,如果复杂不及时处理,很容易发生“漏转喷”的井下事故,乌尔禾油藏复杂防制技术为该井区定向钻井施工安全提速、节约成本,为保障油田增储上产具有很强的指导意义。
Because the Wuerhe Formation in the eight districts has a long open hole section and more than one set of pressure systems in the same open hole section, the reference pressure coefficient of the Badaowan Formation is 0.66-1.69 and the reference pressure coefficient of the Xia Group is 1.27. The coefficient is 1.35, and the Badaowan Formation is prone to over discharge and blowout accidents. However, the formation pressure in the Wuerhe Formation is lower than that in the Badaowan Formation, which is prone to complicated well leakage. Timely treatment, it is prone to “leakage turn spray” underground accident, Wu Erhe reservoir complex control technology for the well directional drilling construction safety and speed, cost savings, in order to protect the oil reserves increased production has a strong Guiding significance.