METHOD AND DEVICE FOR SUBJECTING DEPOSIT TO SHOCK WAVE Russian patent published in 1997 - IPC

FIELD: oil production industry. SUBSTANCE: device has rocket-pump, pump-compressor tube string lowered into operating string of well and suspended from well-mouth equipment which accommodates tube gate, lift gate, bypass gate and gland. Mounted on end of pump-compressor tubes is cylinder. Installed in this cylinder is plunger with possibility for axial movement and protrusion from cylinder in extreme upper position of rocker-pump. Plunger is connected with rocker-pump by means of hose and polished rod. Installed between cylinder and pump-compressor tube string is centrator. Installed on well-mouth equipment is charging apparatus connected with a vessel. Determined is influence zone of single well included in total number of wave-influenced range of wells and according to value obtained, calculated is total number of wells. Used for this purpose are wells transferred from lower operating level to upper one, also wells removed from drilling and exhausted wells. Installed in wells of first two types is cement bridge, and wells of last type are left non-perforated. Device is installed and well is filled with liquid. Rocket pump is started. At upward stroke of plunger, liquid is compressed in pump-compressor tubes. At extreme upper position of rocker-pump, compressed liquid is discharged from pump-compressor tubes into operating tube string. At moment of liquid discharge, a shock wave is created in pump-compressor tube string which reaches bottom face of well and hits it with a blow. This increases oil yield of wells and reduces operating cost. EFFECT: higher efficiency. 11 cl, 5 dwg