CALCULATION FEATURES OF UNDERGROUND DRINKABLE WATER RESERVES IN OIL AND GAS INDUSTRY (ON THE EXAMPLE OF TIMOFIIVSKA, MASHIVSKA AND YABLUNIVSKA FIELDS)

Abstract

In this article, authors provide a technique of geological and economic assessment of groundwater reserves in the oil and gas facilities on the example of Timofiivska, Mashivska and Yablunivska fields. We give a brief description of aquifers operation and their filtration properties, the qualitative composition of water. Some conclusions have been made about the complexity of the geological and hydrogeological conditions of deposit. The chosen method of reserves’ calculation and staging of the work has been substantiated. Authors show the results of geophysical researches, outlook modes, experimental-filtration works and experimental-industrial development, which are calculated on the basis of hydrogeological parameters and performed categorization of operational stocks. A perennial positive forecast of chemical composition for a 25 years period has been given. The parameters of the permissible lowering of water for wells in comparison with the decrease achieved in steps by pumping tests and routine observations have been analyzed. The authors substantiate the hydrodynamic method of calculating the reserves of groundwater. The extent of the hydrogeological protection of aquifers and the possibility of a negative impact of oil and gas industry on the quality of drinkable water has been described. It is proposed to use this technique as the best for the geological and economic evaluation of groundwater resources in the targeted industrial facilities.