Apparatus and method for positioning drill pipe in a mousehole

Material or article handling – Cylindrical bar handling device – Vertical cylindrical bar

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166 7751, 254 93HP, 414 2263, E21B 1900

Patent

active

054681219

ABSTRACT:
An apparatus and method for positioning drill pipe within a mousehole are disclosed. The apparatus includes a lifting member positioned by an elevator disposed at a bottom end of a mousehole wherein the member abuts the pipe from beneath. The elevator can comprise an expandable bladder or a carriage lifted by a cable. By engaging the elevator, the position of the upper end of the pipe can be raised a sufficient degree above the top end of the mousehole to apply a pipe tool around the pipe upper end. In such a manner, the mousehole joint can be removed using a conventional pipe hoist rather than by connection to the kelly joint which might necessitate otherwise a cessation of drilling.

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patent: 4843945 (1989-07-01), Dinsdale

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