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花121平1井是福山油田第一口水平井,主要钻探目的是按300m井距,采用水平井与直井相结合的七点井网法,水平井沿河道方向钻进;以加快评价花121断块,进一步认识流一段油气层分布规律及落实该块油气水关系,提高油层动用程度,提高单井产量,提高油藏采收率。针对井下情况复杂、易漏、垮塌严重,磨阻大,地层可钻性差等技术难点,通过优选钻头、钻具结构及钻进参数,优化泥浆性能,采用复合钻进技术、无线随钻技术,圆满完成钻探任务,为今后该区块的勘探提供了借鉴。
The first horizontal well Huashan Ping 1 is the first horizontal well Fukuyama Oilfield, the main purpose of drilling is 300m well spacing, the use of horizontal wells and vertical well combination of seven well pattern, horizontal well drilling along the direction of the river to speed up the evaluation of flowers 121 block, further understanding of the distribution of a flow of oil and gas layers and the implementation of the block relationship between oil and gas, improve reservoir utilization, improve single-well production, increase oil recovery. Aiming at the technical difficulties such as complicated underground conditions, easy leakage, serious collapse, large grinding resistance and poor drillability of the formation, the drilling performance is optimized by optimizing the drill bit, drilling structure and drilling parameters, adopting composite drilling technology, wireless drilling while drilling technology, Successful completion of the drilling mission for the future exploration of the block provided a reference.