FIELD: development of oil pools; applicable in development of multihorizon oil pools. SUBSTANCE: method includes oil withdrawal through producing wells. Working agent is injected through injection wells and additional wells are drilled. In so doing, prior to drilling of additional wells on multihorizon oil pool, injection wells in oil-saturated formations are additionally perforated. Formation water with density exceeding that of producing formation water is injected to increase formation pressure. After drilling, drilled well is completed at high formation pressure. EFFECT: higher oil recovery of pool due to excluded clogging of oil-saturated formations in additional well drilling.
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Authors
Dates
2002-01-10—Published
2001-03-06—Filed