METHOD FOR IDENTIFICATION OF OIL REPLENISHMENT ZONE IN OIL BED AND METHOD FOR ABOVE PROCESS INTENSIFICATION Russian patent published in 2005 - IPC

FIELD: oil production industry, particularly enhanced recovery methods for hydrocarbons obtaining.

SUBSTANCE: method of oil bed development in mode of depletion drive by productive well drilling and operation or in mode of bed pressure maintaining on the base of productive and injection wells drilling and operation involves performing three-dimensional seismic investigations to detect three-dimensional natural microcrack system tracing; plotting field development map indicating well outputs and volumes of accumulated oil; analyzing carbon (¹⁴C) and tritium (³H) isotope concentration in oil samples extracted from production wells; plotting lines characterized by constant concentration thereof; performing complex analysis of the obtained information to identify possible oil inflow area; subsequently developing the fields with deactivation of injection wells in above area and near it; producing oil from production wells along with possible pressure reduction in oil inflow area, wherein above pressure reduction is conditioned by process reasons and technological limits.

EFFECT: oil inflow intensification.

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