Measuring drillstem loading and behavior

Details Measuring drillstem loading and behavior Measuring drillstem loading and behavior

G - Physics

01

P

73/42

G01P 15/00 (2006.01) E21B 47/00 (2006.01)

Patent

CA 1302117

ABSTRACT OF THE DISCLOSURE A drillstem loading and behavior measurement method and system includes spaced apart subs disposed at the upper end of the drillstem and connected to each other and to a power or conventional swivel and having strain gages and accelerometers mounted thereon in such a way as to measure axial loading, axial vibration, torsional loading, torsional vibration and bending modes of the drillstem during operation. Accelerometers are mounted on respective ones of the subs at a distance from each other sufficient to determine vibration waveforms in axial, torsional and bending modes.

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