Mechanical tubing anchor

Details Mechanical tubing anchor Mechanical tubing anchor

1980-11-17

1982-06-29

Leppink, James A.

Wells

Expansible anchor or casing

With wedge or cam and friction drag

166139, 166217, E21B 33128, E21B 33129

Patent

active

043368417

ABSTRACT:
A tubing anchor for anchoring a well tubing in an outer conduit which includes slips and upper and lower cones. A threaded connection is connected to at least one of the cones for moving the cones towards and away from each other for setting and releasing the slips. First and second clutches are selectively actuated by longitudinal movement of a mandrel for either setting or releasing the slips. The anchor may also be released by an emergency straight pull on the mandrel.

REFERENCES:
patent: 2851108 (1958-09-01), Reed
patent: 3412801 (1968-11-01), Young
patent: 3420306 (1969-01-01), Brown
patent: 4274489 (1981-06-01), Harris
patent: 4296806 (1981-10-01), Taylor et al.

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