MECHANICAL ISOLATION PACKER Russian patent published in 2015 - IPC E21B33/12 

FIELD: oil and gas industry.

SUBSTANCE: mechanical isolation packer includes composite rod with ends for thread, isolation unit installed at the rod, which includes a fixed cylindrical stop with outer cone area, guide sleeve with inner cone area having sizes matched to sizes of outer cone area of cylindrical stop and sealant placed in-between as well as sleeve with pin placed in the rod cam slot, the sleeve is fixed from longitudinal movement in regard to the rod and installed so that it may be rotated axially, and braking section. At that sealant is placed at the rod inside housing fixed in guide sleeve by four pins and due to this housing may be moved longitudinally in grooves of guide sleeve.

EFFECT: improved convenience in packer maintaining as additional ground equipment is not required anymore for this purpose.

7 cl, 2 dwg