首页|Research and Application of Joint Interpretation Using P-Wave and PS-Wave in Tight Gas Exploration
Research and Application of Joint Interpretation Using P-Wave and PS-Wave in Tight Gas Exploration
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The exploration and development of tight sandstone gas reservoirs are controlled by high-quality river channel sand bodies on a large scale in Sichuan Basin.In order to improve the accu-racy of sand body prediction and characterization,Multi-component exploration technology research has been carried out in Northwest Sichuan Basin.First,based on the array acoustic logging data,a for-ward modeling has been established to analyze the seismic response characteristics of the PS-wave data and P-wave data.The result shows that the response characteristics of the P-wave and PS-wave to the sand bodies with different impedance are different.And then through the analysis of logging data,the effectiveness of the forward modeling has been proved.When the sandstone velocity is close to the sur-rounding rocks,the P-wave performs as a weak reflection,which may lead to reduce the identification range of the sand bodies.However,the PS-wave exhibits strong reflection,which can identify this type of sand bodies.Finally,by comparing and explaining the PS-wave data and P-wave data,and integrat-ing their attributes,the prediction accuracy of sand bodies is improved.Compared with the interpreta-tion of a single P-wave,the results can significantly expand the distribution range of sand bodies,lay-ing a foundation for improving the production capacity of single wells and reserve submission.
multi-component explorationtight gassand body identification
Dong Wang、Meng Zhang、Jing Wang、Dan Chen、Yao Zhao、Jing Bai
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BGPInc.,China National Petroleum Corporation,Zhuozhou 072751,China
Institute of Geophysics,Chengdu University of Technology,Chengdu 610059,China
National Engineering Research Center of Oil and Gas Exploration Computer Software,Zhuozhou 072751,China
Science and Technology Research and Development Project of CNPC
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