WELL COMPLETION METHOD Russian patent published in 2014 - IPC E21B43/02 E21B43/11 

FIELD: mining.

SUBSTANCE: method comprises the lowering and cementation of a production casing, with installation of a shoe in a cap base surface, drilling out of cement column with the subsequent forming of borehole in the productive formation interval. In the thick productive formation interval several caverns separated by girts are formed. In the girts before forming of caverns a probe perforation is performed with the location of punched channels along the perimeter in the same plain. Forming of cavity of caverns is performed in a borehole from above downwards from the cap.

EFFECT: well operation with the maximum production rate, with conservation of integrity of mine walls.

3 dwg