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DRILLING WITH INFORMATION CHARACTERIZING LATERAL HETEROGENEITIES BASED ON DEEP DIRECTIONAL RESISTIVITY MEASUREMENTS
DRILLING WITH INFORMATION CHARACTERIZING LATERAL HETEROGENEITIES BASED ON DEEP DIRECTIONAL RESISTIVITY MEASUREMENTS
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机译:基于深方向电阻率测量的信息表征横向非均质性
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摘要
A method and system is provided for drilling a wellbore that traverses a geological formation using a drilling tool. The method and system derives a plurality of formation models that characterize the geological formation. The number of formation models represent layer structures with a heterogeneity (such a fault) offset laterally at variable distance relative to position of the drilling tool. Simulated directional resistivity data of the drilling tool is derived from the plurality of formation models. Certain simulated directional resistivity data are combined or selected for processing as multi-dimensional cross-plot data. Measured directional resistivity data obtained by the drilling tool is used to evaluate the multi-dimensional cross-plot data to determine distance of the heterogeneity relative to position of the drilling tool. The determined distance of the heterogeneity relative to position of the drilling tool can used for controlling drilling direction and can be stored in computer memory and used in other reservoir analysis.
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