Chemical injection tubing anchor-catcher

Details Chemical injection tubing anchor-catcher Chemical injection tubing anchor-catcher

1984-05-11

1986-08-12

Leppink, James A.

Wells

Expansible anchor or casing

With wedge or cam and friction drag

166313, E21B 2300

Patent

active

046050639

ABSTRACT:
An anchoring apparatus for securing a production tubing string against axial movement in a subterranean well is disclosed. The anchoring apparatus can be employed with a conventional sucker rod pumping apparatus transporting fluids through the production tubing. A separate injection line is attached to the exterior of the production tubing and treating fluids are injected therethrough. A conduit which can be connected to the separate injection line extends along the exterior of the inner body of the anchoring apparatus in an axially extending groove and extends through encircling anchoring slips which are expanded by rotational movement of the production tubing and of the body of the anchoring apparatus.

REFERENCES:
patent: 2658459 (1953-11-01), Page
patent: 2803259 (1955-04-01), Pesnell
patent: 3035642 (1957-05-01), Page
patent: 3077933 (1961-09-01), Bigelow
patent: 3844345 (1974-10-01), Evans et al.
patent: 4306624 (1981-12-01), Bernard et al.
patent: 4371038 (1983-02-01), Abernathy et al.
patent: 4387767 (1983-06-01), Read

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