MECHANICAL PACKER Russian patent published in 1999 - IPC

FIELD: oil and gas production industry. SUBSTANCE: packer can be used in completion and operation of oil and gas wells. Device has barrel with shaped slot in external surface with uniformly located alternating short and long sections. Rigidly connected with barrel is support. Located under support are pressure-type sealing member and taper. Taper is adapted for axial displacement relative to barrel. Holder is installed on barrel ready for axial displacement. Slip sockets are located on holder uniformly over its circumference. Slip sockets are spring-biased in radial direction relative to holder and are made in the form of double-arm levers. Installed in lower part of holder is ring which is made so as to be adapted for radial rotation relative to holder but it is rigidly connected with it in axial direction. Made in internal surface of ring is groove of rectangular profile. Made in external surface of holder in the form of separate sectors are shoulders of rectangular profile. Two diametrically opposite guide pins are installed with interference fit in internal part of ring along one axis which is perpendicular to packer axis. Frontal angle of shoulder is equal to 10 deg. Aforesaid embodiment of packer is distinguished by its reliable functioning. EFFECT: higher efficiency. 4 dwg