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METHOD FOR ANALYSING PORE PRESSURE IN SHALE FORMATIONS
METHOD FOR ANALYSING PORE PRESSURE IN SHALE FORMATIONS
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机译:页岩地层孔隙压力分析方法
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摘要
The invention relates to a method for estimating pore pressure in subterranean shale formations such as gas- or organic-rich shale where pore pressure predictions based on either a resistivity log or a porosity-indicative log such as sonic tend to be inaccurate. The method involves combining the resistivity log with the porosity-indicative log using a Eaton formula to give an estimate of pore pressure which is accurate both for conventional water wet shale and for organic-rich shale.
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