METHOD OF OIL POOL DEVELOPMENT Russian patent published in 2002 - IPC

FIELD: oil-producing industry. SUBSTANCE: method includes injection of working agent through injection wells and periodic withdrawal of product through producing wells. Periodic withdrawal of product through producing wells is carried out from at least every producing well. For selection of well, it is shut-in and annulus pressure is measured. With rise of annulus pressure for 1-2 MPa, periodic withdrawal of product is carried out under cyclic conditions: operation - shut-in. Well is shut in when annulus pressure drops by a factor of 1.5-2.0 and it is started to operate with annulus pressure rise by a factor of 1.5-2.0. Proposed method is used in development of water-flooded oil pool. EFFECT: higher rate of oil recovery.