Process and apparatus for vertical racking of drilling shafts on

Details Process and apparatus for vertical racking of drilling shafts on Process and apparatus for vertical racking of drilling shafts on

1986-07-15

1988-04-19

Novosad, Stephen J.

Boring or penetrating the earth

With orienting or racking means for unconnected tools or...

414 22, E21B 1914

Patent

active

047383216

ABSTRACT:
The invention concerns a process and an installation for vertical racking of drill shafts on a drilling tower. The installation comprises mechanisms (34, 36, 38, 40) to grasp an upper intermediate portion of an assembly (26) of shaft sections removed from the well bore, and to incline this shaft assembly with respect to vertical below lifting mechanisms (16, 18). The installation further includes mechanisms (42, 44, 46, 48, 50) to receive and support the lower end of the shaft assembly and then displace the assembly in synchronization with the first mentioned mechanisms to transport the assembly to racks for vertical storage.

REFERENCES:
patent: 3633767 (1972-01-01), Mitchell et al.
patent: 3987910 (1976-10-01), Brunato
patent: 4044895 (1977-08-01), Adair
patent: 4117941 (1978-10-01), McCleskey, Jr. et al.
patent: 4269554 (1981-05-01), Jackson
patent: 4274777 (1981-06-01), Seaggs
patent: 4274778 (1981-06-01), Putnam et al.
patent: 4531875 (1985-07-01), Krueger

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