Wigner-Ville higher-order time&frequency spectrum and its application in prediction of Ordovician fractured-vuggy reservoir in Tazhong Area
Zhao Ying-yue1, Gu Han-ming1,2, Li Zong-jie3, Yang Zi-chuan3, Cai Cheng-guo1
1. Institute of Geophysics and Geomatics, China University of Geosciences (Wuhan), Wuhan City, Hubei Province, 430047, china;
2. Ministry of Education Key Lab of Structure and Hydrocarbon Resources, China University of Geosciences (Wuhan), Wuhan City, Hubei Province, 430047, China
Abstract：There are some problems in exploration of Ordovician depth strata in Tazhong area,such as weak signals,low signal to noise ratio,complicated reflection characteristics,and the interference from the igneous rock,so the routine attribute analysis techniques can not effectively characterize the reservoir characteristics. It was found in the research in this paper that the Wigner-Ville higher-order time frequency spectrum can effectively reflect the spectrum characteristics and it could suppress the noise,raise resolution and bring objective and accurate result. Based on the void seismic-geological model the sensitiveness and effectiveness of the Wigner-Ville higher-order time frequency spectrum to void reservoir seismic wave were analyzed,and the technique was used to predict the Ordovician carbonate reservoir. It is proved in the paper that the reservoir spectrum anomalies acquired from the technique match the characteristics of the drilled reservoir,showing the effectiveness of the method.
赵迎月, 顾汉明, 李宗杰, 杨子川, 蔡成国. Wigner-Ville高阶时频谱及其在塔中奥陶系缝洞型储层预测中的应用[J]. 石油地球物理勘探, 2010, 45(5): 688-694.
Zhao Ying-yue, Gu Han-ming, Li Zong-jie, Yang Zi-chuan, Cai Cheng-guo. Wigner-Ville higher-order time&frequency spectrum and its application in prediction of Ordovician fractured-vuggy reservoir in Tazhong Area. OGP, 2010, 45(5): 688-694.
