METHOD OF OPERATING DOWNHOLE JET PUMPING UNIT IN WELL TESTING

摘要

FIELD: jet pumping units for well recovery from wells. SUBSTANCE: method includes setting of packer and turning of pipe string part above turning device; running into well of radiator, receiver-converter of physical fields and sealing unit with its installation onto pump landing place; background measurements of physical fields; cleaning of well zone from filtrate by supply of liquid medium to pump active nozzle with building-up several values of pressure differential and registration of bottom-hole pressure, composition and physical parameters of fluid and well production rate; recording of inflow profile and fluid composition during pump operation; withdrawal of instruments and sealing unit and turning of pipe string part; installation of insert in landing place for recording of formation pressure build-up curves with sampler and autonomous instrument; building-up of required pressure differential using pump and after formation draining, ceasing of medium supply; retrieval of insert, sampler and instrument after recording of formation pressure build-up curve; turning of pipe string part located above turning device and removing of pump together with assembly from well. EFFECT: higher reliability and efficiency of tests. 2 dwg