METHOD FOR TREATING BOTTOM-HOLE ZONE OF WELL Russian patent published in 1999 - IPC

FIELD: oil production industry. SUBSTANCE: method can be used in perforation, reperforation, and other operations relating to treatment of bottom-hole zone of well. According to method, in treating bottom-hole zone of well undertaken are following activities: perforation of well, implosive action, and completion of well. In perforation activity, number of openings made by perforation is preset to be not larger than 5 per one meter of interval being treated. Depth of each opening produced by perforation operation is not less than 500 mm. In implosive action, volume of implosive chamber is preset to be not less than 0.02 cub.m. Application of aforesaid method prevents destruction of casing string and of cement stone in hole clearance. EFFECT: higher efficiency.