Abstract
Based on the results of numerical modeling, the effect of vertical drilling-induced fractures on the data of galvanic electrical logging methods is considered. Geoelectric models represent a space with different resistivity values, a well and axisymmetric fractures filled with drilling fluid. The effect of fractures limited in radial depth on galvanic logging data leads to a change in signals similar to the change opposite the formation with a penetration zone located within the fracture interval. Based on the on gradient probes and focused logging data, a model of both a formation with an invaded zone and an impermeable formation with a vertical resistivity less than the horizontal one is selected. Thin vertical fractures do not affect the signals of induction probes, which may be a sign of their presence.
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