Prediction of petroleum exploration risk and subterranean spatial distribution of hydrocarbon accumulations

作     者：Xie Hongbing Guo Qiulin Li Feng Li Jianzhong Wu Na Hu Suyun Liang Kun Xie Hongbing~(1,2),Guo Qiulin~2,Li Feng~3,Li Jianzhong~2,Wu Na~2,Hu Suyun~2 and Liang Kun~2 1 School of Energy Resources,China University of Geosciences,Beijing 100083,China 2 Research Institute of Petroleum Exploration & Development,PetroChina,Beijing 100083,China 3 Science & Technology Management Department,China National Petroleum Corporation,Beijing 100007,China

作者机构：School of Energy ResourcesChina University of GeosciencesBeijing 100083China Research Institute of Petroleum Exploration ＆ DevelopmentPetroChinaBeijing 100083China Science ＆ Technology Management DepartmentChina National Petroleum CorporationBeijing 100007China 

出 版 物：《Petroleum Science》 (石油科学（英文版）)

年 卷 期：2011年第8卷第1期

页      面：17-23页

核心收录：

学科分类：081803[工学-地质工程] 07[理学] 08[工学] 0818[工学-地质资源与地质工程] 0713[理学-生态学] 

主　　题：Hydrocarbon resources abundance risk forecast Nanpu sag frequency spectrum simulation fractal theory 

摘      要：Investigation of spatial distribution of oil and gas resource and accurate prediction of the geographic location of its undiscovered resource is significant for reducing exploration risk and improving exploration benefit.A new method for predicting spatial distribution of oil resource is discussed in this *** consists of prediction of risk probability in petroleum exploration and simulation of hydrocarbon abundance. Exploration risk probability is predicted by multivariate statistics,fuzzy mathematics and information processing techniques.A spatial attribute database for sample wells was set up and the Mahalanobis distance and Fuzzy value of given samples were ***,the Bayesian formula was used to calculate the hydrocarbon-bearing probability at the area of exploration ***,a hydrocarbon probability template is formed and used to forecast the probability of the unknown area. The hydrocarbon abundance is simulated based on Fourier integrals,frequency spectrum synthesis and fractal ***,the fast Fourier transformation（FFT） is used to transform the known hydrocarbon abundance from the spatial domain to the frequency domain,then,frequency spectrum synthesis is used to produce the fractal frequency spectrum,and FFT is applied to get the phase information of hydrocarbon-bearing ***,the frequency spectrum simulation is used to calculate the renewed hydrocarbon abundance in the play. This method is used to predict the abundance and possible locations of the undiscovered petroleum accumulations in the Nanpu Sag of the Bohai Bay Basin,*** prediction results for the well-explored onshore area of the northern Nanpu Sag agree well with the actual *** the less-explored offshore areas in the southern Nanpu Sag,the prediction results suggest high hydrocarbon abundance in Nanpu-1 and Nanpu-2,providing a useful guiding for future exploration.