Study on the identification of turbidite high-quality reservoirs under gray background:a case study in dongji sag of Dongying depression
ZHOU You1, 2, GAO Gang1, 2, GUI Zhi-Xian1, 2, ZHOU Qian1, 2, CAI Wei-Xiang3, GONG Yi1, 2, YANG Ya-Hua1, 2
1.Ministy of Education Key Laboratory of Exploration Technologies for Oil and Gas Resources,Yangtze University,Wuhan 430100,China;
2.School of Geophysics & Oil Resources,Yangtze University,Wuhan 430100,China;
3.Sinopec Chongqing Fuling Shale Gas Exploration and Production Corporation,Chongqing 408014,China
In recent years,the success rate of turbidite reservoirs in Dongying depression is reduced,and the existence of gray matter is the main factor affecting the prediction accuracy of turbidite reservoir.In order to accurately identify the turbidite reservoirs in the gray matter development area,the petrophysical parameters such as the velocity,density and Lame parameters of sand,gray and mudstone are analyzed and using the histogram technique to select the effective lithological recognition factor F in the region.The AVO equation is deduced based on the sensitive reservoir recognition factor and F according to the Aki-Richards approximation equation.The prestack elastic impedance equation based on lithology recognition factor F is obtained by using Connolly pre-stack inversion method.The equation is used to analyze the model and the actual data and the results show that the method can effectively identify the turbidite reservoir in the gray matter development area.
周游, 高刚, 桂志先, 周倩, 蔡伟祥, 龚屹, 杨亚华. 灰质发育背景下识别浊积岩优质储层的技术研究——以东营凹陷董集洼陷为例[J]. 物探与化探, 2017, 41(5): 899-906.
ZHOU You, GAO Gang, GUI Zhi-Xian, ZHOU Qian, CAI Wei-Xiang, GONG Yi, YANG Ya-Hua. Study on the identification of turbidite high-quality reservoirs under gray background:a case study in dongji sag of Dongying depression. Geophysical and Geochemical Exploration, 2017, 41(5): 899-906.
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