Document Type and Number:
Japanese Patent JPH0478406
Kind Code:
B2
Abstract:
A pipe cutting tool (10) especially adapted to cut the interior of the in-the-hole (I-T-H) drill pipe (12, 16) to allow subsequent removal of the pipe above the cut. Due to blasting damages, long sections of I-T-H pipe, otherwise in good condition, cannot be removed because the damaged section prevents the removal of the entire drill string. The tool is adapted to receive power from an external source and includes a frame (30), a motor (24) pivotally mounted on the frame, a cutter (26) that is rotated by the motor (24), and an actuator (50 to 56) for pivoting the motor (24) to urge the cutter against the pipe (12) to cut it. The tool (10) can be twisted about the axis (64) of the pipe by rotating a rigid connector (42) to cut the whole circumference (66) of the pipe.
Inventors:
ROORANDO FUOOTEIN
Application Number:
JP10002088A
Publication Date:
December 11, 1992
Filing Date:
April 22, 1988
Export Citation:
Assignee:
INCO LTD
International Classes:
B23D21/14; B23D45/12; E21B29/00
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