PROCESS OF EXPLOITATION OF MULTIPOOL OIL DEPOSIT Russian patent published in 2001 - IPC

FIELD: oil production. SUBSTANCE: process involves division of pools into two groups. First group includes pools with highest penetrability and second group includes less penetrable pools. Oil is extracted from pools through production wells. Working fluid is pumped under cyclic conditions through injection wells. If penetrability of pools differs by factor of 10 and more, that is, when superpenetrable pool called supercollector exists, injection wells drilled into pools of second group are put out of service. Injection wells are sunk directly into supercollector and/or injection wells sunk into supercollector are used. Hydrodynamic linking of production wells directly to supercollector is liquidated. Additional production wells are sunk above supercollector. Seam pressure in supercollector is increased and decreased thanks to cyclic pumping of working fluid through injection wells for ingress oil into it and to additional production wells. Oil is extracted through production wells arranged above supercollector. EFFECT: increased oil output from deposit. 1 cl