PACKER EXTRACTING TOOL Russian patent published in 1998 - IPC

FIELD: oil and gas production industry. SUBSTANCE: packer extracting tool has pipe union which carries collet and releasing unit. Arranged in lower part of device is extension piece with centralizer-limiter. Pipe union is provided with shoulder on outer surface. Releasing unit is connected with pipe union by left-hand thread. Unit is made in the form of component which ensures fixing of collet in packer during its extraction. Shoulder on pipe union is adapted for limiting length of collet travel and preventing its interference with releasing unit at disconnection of tool from packer. EFFECT: higher efficiency. 5 dwg