Wells – Valves – closures or changeable restrictors
Patent
1979-04-09
1981-10-20
Leppink, James A.
Wells
Valves, closures or changeable restrictors
24240, 166 775, 175 85, 269 43, 33180R, B25B 120, E21B 1916
Patent
active
042955270
ABSTRACT:
A casing clamp and guide arrangement to permit ease of centering and securing of the next section of pipe casing to a downhole string comprising an elongated stable member having clamp means at either end with one clamp adapted to engage the top of the uppermost downhole pipe casing and the other clamp adapted to clamp and stabilize the next pipe casing section into coaxial alignment for threadable connection therewith.
REFERENCES:
patent: 1187665 (1916-06-01), Simms
patent: 2450934 (1948-10-01), Calhoun
patent: 2540451 (1951-02-01), Kelley
patent: 3576062 (1971-04-01), Matherne
patent: 3633771 (1972-01-01), Woolslayer et al.
patent: 3668766 (1972-06-01), Carter et al.
patent: 4047897 (1978-02-01), Behn
patent: 4051587 (1977-10-01), Boyadijieff
Leppink James A.
Wymore Max L.
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