PROCEDURE FOR CONSTRUCTION AND OPERATION OF UNDERGROUND STORAGE FACILITY IN OIL AND GAS-OIL CONDENSATE DEPOSITS Russian patent published in 2011 - IPC B65G5/00 E21B43/16 

FIELD: gas and oil production.

SUBSTANCE: gas pressurising horizontal wells in near-roof section of deposit and horizontal producers in lower section of deposit are drilled above level of water-oil contact of matrix section of collector considering arrangement of "old" producers and maximal possible area for stock draining. Also, gas-pressurising wells and producers should be uniformly distributed along total deposit volume above the level of water-oil contact of porous section of the collector. Pumping and withdrawal of gas through gas-pressurising wells and producers are performed synchronous and under sign-changing mode. Also, under a mode of gas withdrawal, simultaneously, oil recovery wells withdraw water-oil product and gas from reservoirs-collectors of lower and upper sections of the deposit, and gas pressurising wells withdraw oil from matrix constituent of the deposit and water - from watered and fractured zones of the collector. Gas is pumped into gas-pressurising wells with constant yield, while withdrawal - with gradual increase of yield. Into producers gas is pumped with gradual increase of yield.

EFFECT: raised recovery of oil in depleted oil and gas-oil condensate fields of fracture-porous type.

3 cl, 6 dwg, 1 tbl