Control of Stick-slip Oscillations in Oil Well Drill Strings Using the Back-stepping Technique
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چکیده
منابع مشابه
Control of Stick-slip Oscillations in Oil Well Drill Strings Using the Back-stepping Technique
This paper deals with the problem of suppression of stick-slip oscillations in oil well drill-strings. The backstepping technique is used to design two control schemes for the system. The first controller is a typical backstepping controller; the second controller is a sliding back-stepping controller. Moreover, a reduced order observer is proposed to estimate the unmeasurable states of the sys...
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Friction appears in all mechanical systems and has a significant impact on control. This paper presents simple but effective nonlinear friction compensation method for a drillstring system, by considering the stickslip motion of the bit on the bottom hole assembly (BHA) in oil wells. Due to nonlinear problem at nearzero velocity where the torque exerted on bit is a function of the bit speed, th...
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Numerical simulations are performed for the stick-slip motion in the BurridgeKnopoff model of one block. Calculated amplitude increases with the driving velocity. We argue that this effect can be a criterion to distinguish between the stick-slip and pure slip oscillations. PACS : 62.20.Qp, 05.45.-a, 02.60.-x
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ژورنال
عنوان ژورنال: The International Journal of Acoustics and Vibration
سال: 2011
ISSN: 2415-1408
DOI: 10.20855/ijav.2011.16.3289