METHOD FOR AIR-PULSE TREATMENT OF DEEP OIL AND GEOTECHNICAL WELLS Russian patent published in 1994 - IPC

FIELD: well drilling. SUBSTANCE: lowered on load logging cable to zone of producing formation is pneumatic tool charged with high-pressure gas at the surface by compressor or high-pressure cylinders. Produced in zone of producing formation by pneumatic tool are expulsions with pulse energy of 10-200 kJ, whose pulse frequency, pulse period-to-pulse duration ratio, and pulse duration are controlled from surface. High-pressure gas expulsions into well are accomplished with pulse frequency, pulse period-to-pulse duration ratio and pulse duration close to resonance characteristics of bottom hole producing formation zone. Method provides for motion of pneumatic tool up and down along perforated section (filter). EFFECT: higher efficiency of air-pulse treatment and increased production rate in completion of well by 2 to 5 times, and in well recovery by 1.5-3 times at practically unlimited depth of well. 3 cl, 1 dwg