渤中29-6区块探井钻井的实践与认识
China Petroleum and Chemical Standard and Quality(2018)
Abstract
渤中29-6构造位于渤海湾南部海域,与毗邻的渤中29-4油田、渤中35-2油田有着相似的构造和成藏背景,为进一步探索渤中29-4油田周边的油气活跃性,部署了BZ29-6-1预探井.本井的设计与作业参考了周边邻井技术与经验,结果在作业中遇到井眼扩大严重、井径不规则、井垮、起下钻遇阻卡等复杂情况.通过认真分析问题,研究了渤中29-6区块的地层压力剖面分布.经过及时的总结和措施改进后,在后续作业中做到了起下钻顺利,电测一次到底,套管顺利到位.本文总结了问题原因分析和采取的措施,为渤中29-6构造的评价井钻井积累了宝贵的经验.
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