Apparatus for well completion operations

Details Apparatus for well completion operations Apparatus for well completion operations

1986-10-20

1988-01-05

Novosad, Stephen J.

Wells

Packers or plugs

With expanding anchor

166144, 166182, E21B 2306

Patent

active

047169630

ABSTRACT:
Methods and apparatus are provided for setting a packer and for placing a seal assembly into the packer bore on a single trip into the borehole. Such apparatus includes a releasable mechanism coupling the seal assembly in fixed relation to the packer until such time as the packer is at least partially set. Methods and apparatus of the present invention also include a mechanism for hydraulically setting a packer without any manipulation of the tubing string. A pair of hydraulic pistons are utilized to move in opposite directions and exert forces on both a packer actuating sleeve and the packer body to set the packer. Methods and apparatus are provided for actuating well tools in response to the hydrostatic pressure in the well. Through use of such apparatus, a chamber at atmospheric pressure is placed in communication with one side of a hydraulically movable member, the other side of which is exposed to hydrostatic pressure. The low pressure of the atmospheric chamber causes movement of the member to operate the well tool.

REFERENCES:
patent: 4436150 (1984-03-01), Barker
patent: 4516634 (1985-05-01), Pitts
patent: 4526229 (1985-07-01), Dickerson
patent: 4545431 (1985-10-01), Fore
patent: 4572290 (1986-02-01), Clifton

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