METHOD FOR EXPLOITING MULTI-STRATA OIL (GAS) DEPOSIT Russian patent published in 1995 - IPC

FIELD: oil/gas production. SUBSTANCE: boreholes drilled around wells in stable rocks are used to sample from exploiting strata in multi-strata (where the number of exploiting strata exceeds one) oil (gas, gas/oil) deposit. Water of at least one well separated in a borehole from the product of overlaying productive stratum is directed to underlaying productive stratum without lifting it to the ground surface. At the same time, water of at least one well separated in a borehole from the product of underlaying productive stratum is directed to overlaying productive stratum without lifting it to ground surface. Borehole pressure is maintained within limits providing product separation from one stratum, and bypass of water separated from hydrocarbons to other stratum being exploited. Monitoring for product sampling and water bypass is carried out using flowmeters and pressure gages. EFFECT: highly effective exploiting. 3 dwg