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Torsional vibrations of auger drill bits involving the rheological properties of the drilling fines

โœ Scribed by B. A. Katanov; G. I. Perminov; V. P. Vysotskii


Book ID
105598470
Publisher
Springer
Year
1978
Tongue
English
Weight
648 KB
Volume
14
Category
Article
ISSN
1573-8736

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This paper analyses a control mechanism designed to signiยฎcantly ameliorate the sustained excitation of torsional relaxation oscillations (slipยฑstick) due to frictional torques generated by an active bit during drilling operations with an extended drill-string. The proposed mechanism of torsional re