WATER AND GAS INFLUX LIMITING METHOD WITH WELL PRODUCTIVITY RECOVERY

摘要

FIELD: oil and gas industry.SUBSTANCE: water and gas influx limiting method with well productivity recovery includes running in of a perforator at the flow string, perforation of the production casing, isolation of water and gas influx and elimination of leak-tightness failures in the production casing by injection of isolating compound through new openings thus forming a water-shutoff screen. At that perforation of the production casing and injection of the isolating compound are carried out during one trip of the perforator. A hydromechanical perforator designed to make openings in the production casing and further injection of the isolating compound is used as a perforator. At that perforation of the production casing is made within the interval of water and gas inflows.EFFECT: providing reliable recovery of productivity and injection capacity of wells, improving efficiency of stratal water isolation, reducing quantity of round-trip operations.3 cl