DRILLABLE PACKER Russian patent published in 2006 - IPC E21B33/12 

FIELD: oil production industry, particularly means to isolate productive formation in well having low formation pressure.

SUBSTANCE: packer comprises shaft with outer thread, sealing member installed on the shaft, upper and lower cones and grippers cooperating with each other, as well as fixer having inner and outer threads. Inner thread of the fixer is identical with that of shaft. The packer is provided with bush installed in lower shaft part and connected with adapting bush secured to body by insert. The body has thrust bush and seating bush with check valve. The fixer is arranged in upper shaft part.

EFFECT: increased operational reliability, reduced bottomhole formation zone contamination, simplified technological operations, including operation of drillable packer installation in well, increased well bore air-tightness during well repair and possibility to use flexible pipe (coiled tubing) during well repair.

4 cl, 2 dwg