伊朗南帕斯海上气田SP11区块地层压力分布及对策研究
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摘要
伊朗南帕斯气田SP11区块的地层漏失情况严重,地层压力分布不明确。为此,总结分析了该区块钻完井中的复杂问题,研究了邻井的钻杆测试、漏失试验等数据,依此建立了地层压力分布剖面,确定了安全钻井液密度窗口,并为钻完井作业提出了相应对策。该区块的地层情况基本清楚,压力分布剖面基本清晰,对井身结构设计、钻井液密度选择等具有指导意义。
The situation of formation mud loss in drilling of SP 11 Block of South Pars gas field,Iran,is serious because of the uncertainty of formation pressure distribution.To solve the problem,the complex drilling and completion problems existent in the SP 11 block were analyzed,and the corresponding countermeasures were put forward,based on the data of DST and leak-off test of adjacent well,formation pressure profiles were established,density window of safe drilling fluid was confirmed.Application results showed that the formation pressure profiles are approximately clear in SP 11 block,which were helpful in design of well structure and choose of drilling fluid density.
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