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Gas logging interpretation method of oil-gas potential reservoirs based on grey correlation analysis
LIAN Cheng-bo1,LI Han-lin1,ZHONG Jian-hua1,CAI Fu-long2,ZHANG Jun-tao3
(1. Faculty of Geo-Resource and Information in China University of Petroleum, Dongying 257061,Shandong Province, China;2. Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China;3. Department of Earth Sciences, Nanjing University,Nanjing 210093 , China)
Abstract:
In order to study the effective method of interpreting oil-bearing reservoirs, grey correlation analysis was used to interpret oil-bearing reservoirs based on gas logging data. There is a noticeable correlation between gas logging data and oil-bearing reservoirs. The effective parameters were determined based on correlation analysis. The oil-gas potential of reservoirs was considered as reference series and gas logging parameters were taken as comparison series. Correlation degree between gas logging parameters and oii-gas potential was obtained based on average weight grey correlation analysis. The weights of gas logging parameters in the weighted grey correlation analysis of tested reservoirs and unknown reservoirs were ascertained.
Key words:  gas logging  grey correlation analysis  oil-gas potential  interpretation method