SIMULTANEOUS RESOLUTION ENHANCEMENT AND DIP CORRECTION OF RESISTIVITY LOGS THROUGH NONLINEAR ITERATIVE DECONVOLUTION

摘要

A nonlinear iterative deconvolution method and system. In one embodiment, thesystem comprises a data acquisition module, a storage module, and a processingmodule. The data acquisition module obtains logging data from measurementsmade by a sensor tool moving through a borehole, and stores the logging datain the storage module. The processing module processes the logging data todetermine a formation model by iteratively updating a set of formation modelvalues which correspond to a set of positions along the borehole. Theiterative updating includes (i) calculating an error value; and (ii) applyinga linearizing factor to the error value. The iterative updating may beexpressible as a weighted sum of a current formation model value with aproduct of the error value and the linearizing factor. The iterative updatingmay continue until an adequate match between the logging data and a calculatedtool response is achieved.