Well logging evaluation and characterization of geological information for deep and ultra-deep drilling wells
SU Yang1,2, LAI Jin1,2, BIE Kang3, LI Dong2, ZHAO Fei2, CHEN Kangjun4, LI Hongbin2, WANG Guiwen1,2
1 National Key Laboratory of Petroleum Resources and Engineering,China University of Petroleum(Beijing),Beijing 102249,China; 2 College of Geosciences,China University of Petroleum(Beijing),Beijing 102249,China; 3 Research Institute of Petroleum Exploration and Development,Tarim Oilfield Company,CNPC,Xinjiang Korla 841000,China; 4 Development Division of Southwest Oil and Gas Field Company,PetroChina, Chengdu 610017,China
Abstract:In accordance with the strategic deployment of deep-sea,deep-earth,deep-space and deep-blue initiatives,land drilling is continuously entering towards deep and ultra-deep reservoirs. However, the collection of advanced well log series are limited for the deep and ultra-deep strata, and will result in interpretation ambiguity of well log data. Therefore,it is urgent to use the limited geophysical logging information to fully interpret on the geological information contained in deep and ultra-deep drilling. This paper firstly discusses the focus of logging evaluation in deep and ultra-deep reservoirs based on extensive literature retrieval. Through the analysis of typical research cases,it systematically reviews the application of logging geology in deep and ultra-deep fields,including using logging data to interpret structural geological phenomena,pick up sedimentary information,evaluate and predict reservoir characteristics,and evaluate in-situ stress using logging data. Finally,the development trend of deep and ultra-deep fields is discussed: paying attention to the integration of multi-data source(such as core,experimental data,and seismic data),and developing advanced rock physical models that adapt to the environmental factors of deep and ultra-deep environments based on their differences. At the same time,in the context of the development of big data and artificial intelligence,the advantages of new technology logging are utilized to promote breakthroughs in the field of logging geology in deep and ultra-deep fields,thus breaking through technical bottlenecks.
SU Yang,LAI Jin,BIE Kang et al. Well logging evaluation and characterization of geological information for deep and ultra-deep drilling wells[J]. JOPC, 2025, 27(1): 225-239.
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