Boring or penetrating the earth – With signaling – indicating – testing or measuring – Tool position direction or inclination measuring or...
Patent
1993-09-27
1994-10-25
Britts, Ramon S.
Boring or penetrating the earth
With signaling, indicating, testing or measuring
Tool position direction or inclination measuring or...
175 50, 175 61, E21B 4712
Patent
active
053580591
ABSTRACT:
An apparatus and method for use in determining drilling conditions in a borehole in the earth having a drill string, a drill bit connected to an end of the drill string, sensors positioned in a cross-section of the drill string axially spaced from the drill bit, and a processor interactive with the sensors so as to produce a humanly perceivable indication of a rotating and whirling motion of the drill string. The sensors serve to carry out kinematic measurements and force resultant measurements of the drill string. The sensors are a plurality of accelerometers positioned at the cross-section. The sensors can also includes a plurality of orthogonally-oriented triplets of magnetometers. A second group of sensors is positioned in spaced relationship to the first group of sensors along the drill string. The second group of sensors is interactive with the first group of sensors so as to infer a tilting of an axis of the drill string.
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Britts Ramon S.
Tsay Frank S.
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