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Acknowledgements
This work was financially supported by the Open Research Fund of the State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences (No. Z016013), and the Foundation of National Natural Science Foundation of China (Nos. 51504208 and 51774248). The sixth author acknowledges the support of the Open Fund (PLN201703) of the State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation (Southwest Petroleum University).
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Mao, S., Shi, X., Meng, Y. et al. Experimental Investigation of Rock Drillability for Three Rock Types Under Varying Wellbore Pressure Conditions. Rock Mech Rock Eng 51, 2439–2445 (2018). https://doi.org/10.1007/s00603-018-1472-7
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DOI: https://doi.org/10.1007/s00603-018-1472-7