Drilling rigs

Details Drilling rigs Drilling rigs

1976-06-28

1977-09-27

Werner, Frank E.

Boring or penetrating the earth

Below-ground impact members

With releasable means to detachably retain telescoping...

175 9, 175 85, 211 60S, 214 1P, E21B 1900

Patent

active

040505901

ABSTRACT:
A drilling rig assembly mounted on a pile, the store for drill strings to be used in drilling being in the form of a carousel mounted concentric with the pile.

REFERENCES:
patent: 2781185 (1957-02-01), Robbins
patent: 3336991 (1967-08-01), Klem et al.
patent: 3937334 (1976-02-01), Bleyl et al.
patent: 3961673 (1976-06-01), Wolters et al.

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