D-OSKIL: a New Mechanism for Suppressing Stick-Slip in Oil Well Drillstrings

Abstract

Limit cycles occurring in oil well drillstrings result from the interaction between the drill bit and the rock during drilling operations. In this paper we propose to use the weight on the bit (WoB) force as an additional control variable to extinguish limit cycles if they occur. In particular we adapt the oscillation killer (OSKIL) mechanism studied in… (More)

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