Helicopter transportable drilling rig

Details Helicopter transportable drilling rig Helicopter transportable drilling rig

1974-10-02

1976-09-21

Wood, Jr., M. H.

Implements or apparatus for applying pushing or pulling force

Step-by-step traveling bar

Pawl actuated

60718, 74661, B66D 114

Patent

active

039814858

ABSTRACT:
A portable drilling rig which may be disassembled into subcomponent packages small enough to be transported to the site by helicopter and quickly reassembled utilizes unique chain drive units, compound arrangement and drawworks assembly.

REFERENCES:
patent: 2405546 (1946-08-01), Archer
patent: 2613059 (1952-10-01), Maier
patent: 2650065 (1953-08-01), Young
patent: 2651947 (1953-09-01), Wilson
patent: 2784557 (1957-03-01), Wilson
patent: 2936654 (1960-05-01), Wilson
patent: 3079811 (1963-03-01), Isenberg
patent: 3767329 (1973-10-01), Houck

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