METHOD OF BUILDING AND OPERATION OF MULTIPLE-ZONE SUBSURFACE GAS STORAGES Russian patent published in 1995 - IPC

FIELD: gas industry; subsurface gas storages. SUBSTANCE: several zones for gas storage are assigned in geological section, then input-development and monitoring-regulating wells are drilled. Then casing and flow tubing are installed in wells. When outfitting input-development wells, perforations are made in flow tubing at levels of all zones. Gas to be stored is injected and extracted, when necessary, simultaneously from all zones through flow tubing of input-development wells. Monitoring - regulating wells are drilled to each separate zone. To regulate amounts of gas injected to and extracted from each zone, gas is additionally injected to or extracted from monitoring - regulating wells. EFFECT: reduced expenses for creating and operating gas storages owing to reduction of number of wells. 1 dwg