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

FIELD: oil industry. SUBSTANCE: according to process pools are divided into two groups. Mean values of filtration-capacitive properties are estimated per each group. Pools of higher penetrability and advanced working of stock are included in first group. Second group includes less penetrable pools with slow working of stock. Oil is extracted from pools through production wells. Working agent is pumped under cyclic condition through injection wells and agent increasing hydrodynamic resistance of pool is pumped through one injection well and/or one production well as minimum during second half of period of reduced seam pressure. Duration of cycle of pumping of working agent is chosen from condition providing for least difference in averaged rates of transfer of forcing fronts in pools of productive section of first and second groups. If penetrability of pools differs by factor of 10 and more half-cycle of shut- down of injection wells in case of cyclic pumping of working agent is so assigned that seam pressure drops sufficiently to ensure transfer of stratal fluids from pools of second group to pools of first group inside shut-down wells. Intensification operations to raise oil output in pools of second group are periodically conducted in shut-down wells. EFFECT: increased output of oil deposit.