Remotely operated packer and anchor apparatus for changing a geo

Details Remotely operated packer and anchor apparatus for changing a geo Remotely operated packer and anchor apparatus for changing a geo

1981-06-24

1984-06-05

Purser, Ernest R.

Wells

With below and above ground modification

Head for tool, piston or cleaner

166120, 166133, E21B 3303

Patent

active

044523041

ABSTRACT:
An improved method of setting a packer in a geothermal well bore under pressure to allow isolation of the wellhead valve including the steps of connecting a lubricator to the wellhead above the valve with the improved packer of the present invention in the lubricator and with a string extending into the lubricator to connect to the packer, running the packer into the well bore below the valve, releasing the packer to allow well pressure to move the packer to set position, disconnecting and recovering the running string, removing the lubricator, repairing or replacing the valve attaching the lubricator, running and connecting the string to the set packer, equalizing pressure across the packer, unsetting the slips and recovering the packer from the well bore. The improved packer includes a piston responsive to fluid pressure in the running string to exert a force on the slip cone in a direction opposite setting movement of the slip cone and a normally closed passage between opposite sides of the packing and a second piston responsive to fluid pressure in the running string to open such passage and equalize pressure between opposite sides of the packing.

REFERENCES:
patent: Re22180 (1942-09-01), Otis
patent: 1842116 (1932-01-01), Rasmussen
patent: 2117535 (1938-05-01), Baker et al.
patent: 4273372 (1981-06-01), Sheshtawy

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