A study on side-bed correction of induction log data in highly-deviated wells

Included angles between hole - axes and bed boundaries are different in deviated wells and the measuring devices operate in eccentric positions, thus the influences of surrounding rocks on the measurements are different with that in vertical wells and the old correction charts are no longer applicable. Based on the theoretical deduction and calculation of the response function of the 1503 dual induction tool, the influences of measurement factors on response curves are analyzed, side- bed correction charts of induction log data are constructed at different relative dip angles, and continuous side- bed correction methods are studied. Side - bed correction of the induction log data in deviated wells can make the resistivity curves after correction being more close to the initial true geophysical values, so as to improve the quality of logs and the coincidence rate of logging interpretation.