Boring or penetrating the earth – Means traveling with tool to constrain tool to bore along... – Axially spaced opposed bore wall engaging guides
Patent
1993-01-28
1996-05-07
Tsay, Frank S.
Boring or penetrating the earth
Means traveling with tool to constrain tool to bore along...
Axially spaced opposed bore wall engaging guides
1753252, F21B 708
Patent
active
055137148
ABSTRACT:
A stabilization device for a down-hole motor for use in drilling operations for example in oil-fields to control any tendency for spiralling of the tool bit during the drilling action and to permit steering by a "orientate and rotate" technique. In an example of the device, an end portion of a motor shaft (26) projects from a motor body (20), the projecting portion being comprised of an attachment apparatus or bit box (28) by which a tool bit (38) is connected for rotation. The bit box (28) may be separable from the shaft (26) or may be integrally formed therewith, but, is provided with a stabiliser means (32) in the form of part-helical vanes surrounding the bit box (28). The bit (38), when secured in the box (28), is located immediately adjacent the stabilising vanes (32) for maximum control; additionally, stabiliser vanes (22,24) may be provided on the motor body portion (20) and, if required, on the selected tool bit.
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Downie Andrew M.
Powell Roy
Neyrofor-Weir Limited
Tsay Frank S.
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