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Drillstring Vibration Part 2a: Stick Slip Mechanism
Автор: Oil Drilling Channel
Загружено: 2019-08-17
Просмотров: 4295
Описание:
The Slip-stick mechanism describes the non-uniform rotation of the drillstring that generates low frequency torsional vibrations in the drillstring as the bit repeatedly sticks and slips. These vibrations once initiated become self-sustaining through the response of the rotary drive to the RPM and Torque fluctuations. Slip-stick is initiated when the rotary torque applied to the drillstring is insufficient for smooth
rotation. This increase in torque or resistance to rotation can be generated in a number of different ways. This is as well as possible mitigation attempts will be the subject of this video.
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