Mechanical set anchor with slips pocket

Details Mechanical set anchor with slips pocket Mechanical set anchor with slips pocket

1996-01-31

1998-11-03

Dang, Hoang C.

Wells

Processes

Placing or shifting well part

1661176, 166215, 175 81, E21B 2301, E21B 708

Patent

active

058295313

ABSTRACT:
A mechanical set anchor wherein a plunger extending from a base end of an anchor body activates a pin type trigger which releases a spring utilized to set multiple slips extending from the body of the anchor. Continued downward compressive forces fully sets the slips into the borehole pipe casing. The slips are maintained in their fully set position by a locking nut. The anchor is mechanically released by an upward pull under tension of sufficient strength to shear release pins that release the compressed spring fully retracting the slips within the anchor body so that the anchor may be tripped from the borehole without interference from the previously engaged slips.

REFERENCES:
patent: 1619268 (1927-03-01), Rasmussen
patent: 1774911 (1930-09-01), Abercrombie
patent: 1900371 (1933-03-01), Smith
patent: 2145422 (1939-01-01), Kinzbach
patent: 2170284 (1939-08-01), Eastman
patent: 2906346 (1959-09-01), Johnston
patent: 3746093 (1973-07-01), Mullins
patent: 4156460 (1979-05-01), Crowe
patent: 4429741 (1984-02-01), Hyland
patent: 4811785 (1989-03-01), Weber
patent: 4898245 (1990-02-01), Braddick
patent: 5467819 (1995-11-01), Braddick
patent: 5467820 (1995-11-01), Sieber
patent: 5488989 (1996-02-01), Leising et al.
patent: 5584350 (1996-12-01), Schnitker et al.
patent: 5636690 (1997-06-01), Garay

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