Drilling rig

Details Drilling rig Drilling rig

1992-03-31

1993-10-12

Dang, Hoang C.

Boring or penetrating the earth

With above-ground guide for relatively advancing tool

175 85, 175162, E21B 1500, E21B 302

Patent

active

052517098

ABSTRACT:
The present invention discloses structures which enable the construction or conversion of drilling rigs in which the rotary table and kelly are replaced by a top drive rotating mechanism. Furthermore, torque guide is provided to control lateral movement of the top drive and resist reactionary rotational forces induced by the top drive, without applying additional forces to the mast of the rig.

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patent: 2998084 (1961-08-01), Johnson et al.
patent: 3857450 (1974-12-01), Guier
patent: 3915244 (1975-10-01), Brown
patent: 4126193 (1978-11-01), Brown et al.
patent: 4421179 (1983-12-01), Boyadjieff
patent: 4610315 (1986-09-01), Koga et al.
patent: 4625796 (1986-12-01), Boyadjieff
patent: 4815546 (1989-03-01), Haney et al.
patent: 4865135 (1989-09-01), Moses

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