METHOD OF GUN PERFORATION OF WELLS AND DEVICE FOR ITS EMBODIMENT Russian patent published in 1997 - IPC

FIELD: production of gaseous and fluid media from wells, particular, well perforation with the help of shot bullets for opening of formation. SUBSTANCE: method of gun perforation of wells includes burning-through of pipes with high-temperature jet of gases prior to shooting bullets in the preset points of formation of perforation channels. The device for embodiment of the offered method has body with vertical-curved barrels. Barrels provide for directed motion of bullets. Bases of barrels with bullets are connected with powder charge. Installed in front of powder charge, coaxially with it and parallel to barrels, is gas generator with solid-fuel charge, nozzles, squib and igniter. Gas generator is connected with powder charge, nozzles, squib and igniter. Gas generator is connected with powder charge by means of fuse and serves as means for ignition of this charge. EFFECT: higher quality of perforation of producing formation due to prevention of breakage of cement stone in built shooting. 2 cl, 2 dwg