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Vibration Analysis Of Simultaneous Drilling And Reaming Bha, Mohammed F. Al Dushaishi, Daniel S. Stutts

Mechanical and Aerospace Engineering Faculty Research & Creative Works

The drillstring used in the oil and gas exploration is a complex structure due to the different forces acting on it. One of the primary sources of drillstring vibrations is the cutting forces caused by the drill bit contact with the rock formation. In some drilling applications, such as hole enlargement and underreaming, the source of the cutting action originates from the drill bit as well as the reamer which increases the dynamic complexity of the drillstring. This paper’s objective is to investigate the torsional vibration behaviors of the bottom hole assembly (BHA) under simultaneous drilling and reaming. More specifically, …