In the paper, the study of deep fluids migration mechanism through tectonic faults to the overlying sediments for the purposes of both optimizing hydrocarbon production at depleted gas condensate fields and environmentally safe use of drinking groundwater in the zone of active water exchange has received further development. It is very relevant at the moment, especially from the perspective of detecting fluid-conducting tectonic faults at gas condensate fields of the Dnipro-Donetsk depression at the late stage of exploitation. The authors consider this topic from two diametrically different perspectives. First, the migration of hydrocarbon gases along tectonic faults to the overlying oil and gas deposits that are being developed. A number of researchers substantiate the possibility of restoring reserves at old depleted gas condensate fields due to gas flows from deep horizons. Second, the migration of deep waters unsuitable for drinking purposes through tectonic faults to the zone of active water exchange within large water intakes. The authors and a number of other scientists established the facts of the significant transformation of drinking groundwater chemical composition in the areas of these waters vulnerability to contamination by deep, highly mineralized waters. The hydrogeochemical approach proposed in the article is one of the tools for solving these issues due to the localization of deep fluids migration zones to the overlying aquifers. In the paper, the approbation of this approach has been carried out on the example of the water intake network of Poltava urban agglomeration, which is strategically important for Eastern Ukraine. The authors have proposed to conduct special ecological and hydrogeological studies according to the methodical approach presented in the article at Shebelynske gas condensate field since scientific discussions have been going on for many years around the issue of restoring its reserves. This will help to ensure the efficient placement of new wells in deep gas flow zones in the future
Received 16.02.2022
Revised 12.05.2022
Accepted 31.08.2022
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