METHOD OF DEVELOPING OIL POOL Russian patent published in 1996 - IPC

FIELD: oil and gas production. SUBSTANCE: invention relates to the late-stage development of oil pool and consists in the following. Oil formation is initiated and air (working medium) is pumped in into injection wells. After 75- 80% of extractable resources are taken, injection wells are pumped in with associated Devonian water with density 1.06-1.09 g/cu.cm, its volume corresponding to that of average annual production of productive wells when maintaining hole bottom pressures in productive wells no less than 0.6 that of initial formation pressure. Pumping in of Devonian water is carried out in cyclic mode: 5-7 months pumping, 5-7 months stand, wherein pumping is also a cycling operation: 10-20 days properly pumping and 10-20 days stand. EFFECT: increased oil production. 2 cl