METHOD FOR CREATING UNDERGROUND GAS STORAGE IN GEOLOGICAL STRUCTURES FILLED WITH GAS

摘要

FIELD: oil and gas production.;SUBSTANCE: invention refers to oil and gas industry and serves for creation of underground gas storages (UGS) on the base of non-hydrocarbon gases minefields. In geological structures filled with non-hydrocarbon gas there constructed are production wells with opening of geological structure collectors. Lithological and physical characteristics of rocks of geological structure cap are used to define maximum allowable pressure in geological structure and gas is filled in geological structure collector till this specified value with creation of buffer and active gas volume. Note that buffer gas volume is primary created from formation non-hydrocarbon gas, the gas pumping and further extraction is primary done in structure upper part. Gas extraction is done after holding layering time of mixture of pumped gas and formation non-hydrocarbon gas till the latter appears in production wells.;EFFECT: invention provides decrease of natural gas consumption for generation of gas buffer volume and creation of high process pressure in UGS.