1. Drilling-Induced Riser Vibration.
- Author
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Blevins, Robert D., Coughran, Charles S., Utt, Michael E., and Raghavan, Kamaldev
- Abstract
Significant riser oscillations were observed during deep water drilling operations. The riser frequency was above and below the rotation speed of the drill pipe. Laboratory tests and of a riser section has been conducted for these riser drilling-induced vibrations. The first test consists of first measuring the fluid forces between a rotating drill pipe and a riser. In the second test, an elastically supported riser self excites about a rotating drill pipe. An analytical model is developed for predicting these drilling induced riser oscillations. The results show that fluid coupled riser vibrations can result from the fluid forces generated in the annular fluid between the rotating drill pipe and the riser. [ABSTRACT FROM AUTHOR]
- Published
- 2016