Study on the uncertainty of geological drilling parameters by the uncertainty theory by Yanan Sheng, Zhichuan Guan

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Development and Application of the Downhole Drilling String Shock-Absorption and Hydraulic Supercharging Device by Yongwang Liu, Zhichuan Guan, Hongning Zhang, Bo Zhang

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A new quantitative evaluation method for drilling risk based on uncertainty analysis by Zhichuan Guan, Ya-Nan Sheng, Ming Luo, Yuqiang Xu, Bo Zhang, Qing Wang

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