METHOD FOR CREATING UNDERGROUND GAS STORAGE IN AQUIFER

摘要

FIELD: mining.;SUBSTANCE: method involves the creation of an underground gas storage in a layered nonuniform terrigenous aquifer. According to the method, vertical and/or horizontal gas wells are drilled, which are operated as injection ones in the gas injection cycle, and as production ones in the gas extraction cycle. Drilling water abstraction and water injection wells is carried out as well. The water abstraction and water injection wells are placed around the gas wells placement area. With respect to the variability of the reservoir porosity and permeability, the water injection wells are drilled with descending pseudo-horizontal wellbores and with the possibility to provide a pressure barrier across the entire aquifer section. The water abstraction wells are drilled with ascending pseudo-horizontal wellbores and with the possibility of minimizing the negative manifestation of the gas contamination process in the water extracted.;EFFECT: improving the method for creating UGS in the aquifer, using water abtraction and water injection wells due to increasing the efficiency of active influence on the filtration processes in the aquifer.;1 dwg