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METHOD FOR CHARACTERIZING SUBSURFACE FORMATIONS USING FLUID PRESSURE RESPONSE DURING DRILLING OPERATIONS
METHOD FOR CHARACTERIZING SUBSURFACE FORMATIONS USING FLUID PRESSURE RESPONSE DURING DRILLING OPERATIONS
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机译:钻井作业过程中流体压力响应表征地下岩层的方法
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摘要
A method for characterizing a subsurface formation using a fluid pressure response during wellbore drilling operations includes the steps of determining a change in wellbore pressure proximate the surface, calculating a change in volumetric flow rate out of the wellbore as a function of the change in wellbore pressure proximate the surface, determining a downhole fluid pressure in the wellbore corresponding to the change in wellbore pressure proximate the surface and determining a productivity index value as a function of the change in volumetric flow rate, the downhole fluid pressure and a reservoir pressure.
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