Validation of horizontal auger drilling string assembly design based on dry bearings
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DOI: 10.1134/s1062739117022116
Abstract: The authors identify some factors that govern energy input of borings removal from hole bottom to an unloading point using auger drilling string assembly. Of specific significance appears to be the factor of insufficient reliability… read more here.
Keywords: drilling string; horizontal auger; auger drilling; validation horizontal ... See more keywords
Study of Lateral Vibration of Drilling String with Mass Imbalance Using Finite Element
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DOI: 10.18517/ijaseit.9.3.4478
Abstract: The objectives of this study were to analyze the first three critical frequency, critical speeds and mode shapes of the drilling string due to lateral vibration. Drilling string vibrations pose a major challenge to the… read more here.
Keywords: drilling string; imbalance; lateral vibration; mass imbalance ... See more keywords