Pipe gripping apparatus

Details Pipe gripping apparatus Pipe gripping apparatus

1996-11-13

1998-12-15

Dang, Hoang C.

Wells

Processes

Assembling well part

166 7514, 166 7752, 166382, 175423, 188 67, E21B 1906, E21B 1910

Patent

active

058486470

ABSTRACT:
A pipe gripping apparatus for angularly adapting to misaligned pipe on one or more pipe strings, said apparatus comprising: a housing having internal, opposing, downwardly curved surfaces therein and forming a longitudinal opening for passing a portion of at least one tubing string therethrough; a plurality of slip carriers each having an exterior surface contoured to match said downwardly curved surface and having a downwardly inclined interior surface, each said slip carrier being in movable connection with one of said curved surfaces of said housing; a plurality of slips having downwardly inclined exterior surfaces and longitudinal channels formed on an internal surface for holding gripping elements for gripping a portion of the pipe, each said slip being in sliding engagement with one of said slip carriers; and a lifting mechanism having a securing arm in connection between each pair of said opposing slips.

REFERENCES:
patent: 1541669 (1925-06-01), Summers
patent: 2063361 (1936-12-01), Baash
patent: 3748702 (1973-07-01), Brown
patent: 4354706 (1982-10-01), Coyle, Sr.
patent: 4381584 (1983-05-01), Coyle, Sr.
patent: 4715456 (1987-12-01), Poe, Jr. et al.
patent: 5335756 (1994-08-01), Penisson
patent: 5484040 (1996-01-01), Penisson
patent: 5609226 (1997-03-01), Penisson
Bilco Tools, Inc. brochure on Precision Slips & Elevators, Word Oil, Jan. 1996.

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