Wells – Above ground apparatus – Inner member anchor or seal with lateral port
Patent
1983-10-26
1985-11-26
Novosad, Stephen J.
Wells
Above ground apparatus
Inner member anchor or seal with lateral port
285145, E21B 1910
Patent
active
045549710
ABSTRACT:
A tubing anchor assembly for seating and supporting coiled tubing in a tubing head, which includes as a first element, multiple slip segments inserted in the slip bowl of the tubing head and each provided with a vertically oriented dove tail slot, and as a second element, slip retainer screws radially threaded in the tubing head body at spaced intervals, each of the slip retainer screws provided with a frustro conical tip extending into the slip bowl of the tubing head and engaging a dove tail slot in one of the slip segments. The slip segments are maintained in open configuration inside the upper portion of the slip bowl when the slip retainer screws are in engagement with the dove tail slots and are threadably retracted in the tubing head body with the frustro conical tips adjacent the side of the slip bowl. A retainer ring located in a groove provided in each of the slip segments serves to maintain the slip segments in a desired alignment inside the slip bowl and the slip segments are permitted to drop in concert by the influence of gravity from the frustro conical tips of the slip retainer screws as the slip retainer screws are caused to threadably travel toward the tubing into the slip bowl.
REFERENCES:
patent: 1400940 (1921-12-01), Clarke
patent: 1568198 (1926-01-01), Tschappat
patent: 3090640 (1963-05-01), Otteman et al.
patent: 3287035 (1966-11-01), Greenwood
patent: 4326587 (1982-04-01), Gauthier et al.
patent: 4334342 (1982-06-01), Hall
Harrison John M.
Neuder William P.
Novosad Stephen J.
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