Correction of the conditions of hydrogen sulfide waters formation in the Fergana basin according to results of geophysical study

The structure of the oil fields with faulted anticlinal structure, which form hydrogen sulfide water, was corrected according to the results of seismic and resistivity survey. The surface waters penetrate into the oil-bearing layers through the fractured zones of tectonic faults and increase sulfate-reducing processes. These hydrodynamic processes were confirmed in all the anticlinal structures of southern edge of the Fergana Basin using data of electrical resistivity investigation. The influx of stratal waters from the Paleozoic layers provides a creation of water exchange conditions in the oil-bearing Paleogene formation, and, as a result, supports a microbial redox reaction.