METHOD FOR SELECTIVE OPENING PRODUCTIVE STRATUM Russian patent published in 1996 - IPC

FIELD: secondary opening productive strata. SUBSTANCE: method includes origination of perforated openings on lateral side of filter. The openings are overlapped with plugs that are chemically destructible. Filter case together with casing string are descended to the well. Filter case is made in the form of units with conducting cylindrical rings electrically insulated from case body. The units are extended inward. The rings are made in the form of contacts for geophysical probe. The rings are installed in perforated openings. Lowered string is cemented. String plugs are destructed. Then productive stratum is operated. Current stratum saturation is under control in the process of well operation. This is done by filling the well with electrically conducting fluid and taking electrometry through filter case. EFFECT: electrometry conductance. 2 dwg