Vibration Control Of A Coupled Cylinder Under Rotational Motion

Tainsing, Josua (2015) Vibration Control Of A Coupled Cylinder Under Rotational Motion. Project Report. UTeM, Melaka, Malaysia. (Submitted)

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Abstract

In oil drilling process, one the most destructive element is vibration. The phenomenon of vibration causes a lot of problem including drilling efficiency and even safety of the operators. Vibration suppression in drilling has been an ongoing study since years ago up until this century. Accurate prediction and controlling of the vibration problem is essential to achieve a more efficient and safer drilling operation. This research will focus on suppressing the vibration problem by studying the vibration characteristic of different physical parameters of the coupled cylinder and how to control them. Theoretical and experimental study was conducted to study this vibration problem. Theoretical study involves the analysis about the equation of motion of the coupled cylinder. The experimental study includes the investigation of effect of different parameters in a coupled cylinder which include load, rotational speed, cylinder’s length, eccentricity, misalignment and different type of coupling. In this research, the line of drill pipes is characterized as coupled cylinder, the linkage as coupling, the rotary table as motor, and the drilling mud as load. The findings of this study lead to the understanding of the vibration characteristic of a coupled cylinder and hence the identifying the effective control method.

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