Spatial Distribution Prediction of Oil and Gas Based on Bayesian Network with Case Study

Author:

Ren Hongjia12ORCID,Wang Xianchang123,Ren Hongbo4,Guo Qiulin5

Affiliation:

1. College of Computer Science and Technology, Jilin University, Changchun 130012, China

2. Key Laboratory of Symbolic Computation and Knowledge Engineering of Ministry of Education, Jilin University, Changchun 130012, China

3. Chengdu Kestrel Artificial Intelligence Institute, Chengdu 610000, China

4. Beijing Jingdong Century Trading Co., Ltd., Beijing 100083, China

5. Research Institute of Petroleum Exploration & Development, PetroChina, Beijing 100083, China

Abstract

Effectively predicting the spatial distribution of oil and gas contributes to delineating promising target areas for further exploration. Determining the location of hydrocarbon is a complex and uncertain decision problem. This paper proposes a method for predicting the spatial distribution of oil and gas resource based on Bayesian network. In this method, qualitative dependency relationship between the hydrocarbon occurrence and key geologic factors is obtained using Bayesian network structure learning by integrating the available geoscience information and the current exploration results and then using Bayesian network topology structure to predict the probability of hydrocarbon occurrence in the undiscovered area; finally, the probability map of hydrocarbon-bearing is formed by interpolation method. The proposed method and workflow are further illustrated using an example from the Carboniferous Huanglong Formation (C2hl) in the eastern part of the Sichuan Basin in China. The prediction results show that the coincidence rate between the results of 248 known exploration wells and the predicted results reaches 89.5%, and it has been found that the gas fields are basically located in the high value area of the hydrocarbon-bearing probability map. The application results show that the Bayesian network method can effectively predict the spatial distribution of oil and gas resources, thereby reducing exploration risks, optimizing exploration targets, and improving exploration benefits.

Funder

China National Petroleum Corporation

Publisher

Hindawi Limited

Subject

General Engineering,General Mathematics

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