首页|Stratigraphic identification using real-time drilling data

Stratigraphic identification using real-time drilling data

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Identification of stratigraphic interfaces and lithology is a key aspect in geological and geotechnical in-vestigations.In this study,a monitoring while-drilling system was developed,along with a corre-sponding data pre-processing method.The method can handle invalid drilling data generated during manual operations.The correlation between various drilling parameters was analyzed,and a database of stratigraphic interfaces and key lithology identification based on the monitoring parameters was established.The average drilling speed was found to be the most suitable parameter for stratigraphic and lithology identification,and when the average drilling speed varied over a wide range,it corresponded to a stratigraphic interface.The average drilling speeds in sandy mudstone and sandstone strata were in the ranges of 0.1-0.2 m/min and 0.2-0.29 m/min,respectively.The results obtained using the present method were consistent with geotechnical survey results.The proposed method can be used for real-time lithology identification and represents a novel approach for intelligent geotechnical surveying.

Monitoring while-drillingDrilling parametersGeotechnical stratigraphyLithology identification

Minglong You、Zhikai Hong、Fei Tan、Hao Wen、Zhanrong Zhang、Jiahe Lv

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Faculty of Engineering,China University of Geosciences,Wuhan,430074,China

China Railway Siyuan Survey and Design Group Co.,Wuhan,430063,China

National Natural Science Foundation of ChinaHubei Natural science FoundationFundamental Research Funds for the Central Universities,China University of Geosciences(Wuhan)

422771652023AFD217CUGCJ1821

2024

10.1016/j.jrmge.2024.02.012

岩石力学与岩土工程学报(英文版)
中国科学院武汉岩土力学所中国岩石力学与工程学会武汉大学

岩石力学与岩土工程学报(英文版)

CSTPCD
影响因子：0.404
ISSN：1674-7755
年,卷(期)：2024.16(9)