Dynamic Toolface Estimation for Rotary Steerable Drilling System
AbstractIn drilling engineering, Toolface is an angle used to describe bit direction. It is a challenging task to accurately estimate Toolface while drilling because of the downhole harsh conditions, but it is a primary step for the dynamic point-the-bit rotary steerable system (DPRSS). A new dynamic Toolface estimator is present, which fuses measurements from two accelerometers and one gyro. A dual-accelerometer Toolface measuring method is designed to compensate the circumferential acceleration of DPRSS. A nonlinear Complementary Filter (CF) is used to suppress the effect of vibration and axial acceleration. The frequency-domain characteristics of nonlinear CF are analyzed and its natural frequency is determined adaptively based on real time drilling conditions. This new estimator is validated on a DPRSS prototype under typical drilling modes; it is demonstrated with high robustness and follows the references satisfactorily. View Full-Text
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Wang, W.; Geng, Y.; Wang, K.; Si, J.; Fiaux, J.O. Dynamic Toolface Estimation for Rotary Steerable Drilling System. Sensors 2018, 18, 2944.
Wang W, Geng Y, Wang K, Si J, Fiaux JO. Dynamic Toolface Estimation for Rotary Steerable Drilling System. Sensors. 2018; 18(9):2944.Chicago/Turabian Style
Wang, Weiliang; Geng, Yanfeng; Wang, Kai; Si, Jieru; Fiaux, Joice O. 2018. "Dynamic Toolface Estimation for Rotary Steerable Drilling System." Sensors 18, no. 9: 2944.
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