利用地层测试压力资料估算油层动用程度和剩余油饱和度

Shiyou Xuebao/Acta Petrolei Sinica(2011)

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Abstract
利用电缆地层测试器(FMT)资料估算油藏无水采油期剩余油饱和度,是其在油田开发阶段的重要应用之一.在引入油层动用程度和油层采出程度的概念之后,笔者提出一种确定无水采油期当前油层剩余油饱和度的新方法,即利用油层压力资料来估算剩余油饱和度.当油层处于无水采油期时,油层不含水,此时油层电阻率与原始油层电阻率变化不大,由常规电阻率计算的剩余油饱和度与原始含油饱和度差别不大,易得出油层"没有被动用"的假象.因此,应当利用FMT资料来估算剩余油饱和度.对于开发生产井,常规电阻率测井资料和FMT资料综合估计剩余油饱和度的方法是互为补充,缺一不可的.
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Key words
Formation pressure measurement,Oil-gas producing degree,Pressure coefficient,Remaining oil saturation,Reservoir recovery degree,Water-free oil production period
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