METHOD OF OPERATION OF PUMP-EJECTOR IMPULSE WELL PLANT

摘要

FIELD: oil producing industry. SUBSTANCE: invention is designed for testing and completion of wells. According to proposed method, linear hydraulic impulse device, packer and jet pump with stepped through channel mounted in tandem from bottom to top are lowered on tubing string into well, then liquid medium is delivered into hydraulic impulse device and bottom hole zone of productive stratum is treated with said medium by hydraulic impulse cavitation with subsequent pumping out said medium by means of jet pump from under- packer space of well together with colmatating particles and lifting the medium to surface. Hydraulic impulse device is made sectional, consisting of stationary part installed on tubing string lower than packer and in which stepped through channel is made along axis of tubing string, and lowering down part made in form of insert. Before treatment of bottom hole zone of productive stratum, field- geophysical researches of productive stratum are carried out in operating well by lowering radiator and receiver-converter of physical fields through stepped channel of jet pump and stepped through channel of stationary part of hydraulic impulse device, and after treatment of bottom hole zone of productive stratum and before pumping out liquid medium with colmatating particles, productive stratum is subjected to treatment with chemical reagents by pumping the reagents into well along tubing string through jet pump and stationary part of hydraulic impulse device, with interlocking inserts with central longitudinal through channel being installed in stepped through channels. After chemical treatment of productive stratum, field-geophysical researches are carried out again in working well and curves of pressure built-up by means of functional insert installed in stepped through channel of stationary part of hydraulic impulse device or in stepped through channel of jet pump are recorded. EFFECT: enlarged functional capabilities of plant, improved efficiency of studies and treatment of bottom hole zone of productive stratum. 4 dwg