Pre-stack elastic parameter inversion of ray parameters applied to reservoir prediction

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  • 1.School of Energy Resource,China University of Geosciences,Beijing 100083,China;
    2.Petroleum Exploration and Production Research Institute,Sinopec,Beijing 100083,China;
    3.Rockstar Petroleum Science and Technology Limited Company,Beijing 100192,China;
    4.Geology Institute of Fourth Oil Field,Dagang Oilfield Company,Tianjin 300280,China

Received date: 2015-11-24

  Revised date: 2016-01-21

  Online published: 2019-09-19

Abstract

The seismic wave of P gather is ray path.Compared with angle gather,it is more close to the actual path of seismic wave and can express the subsurface reflection characteristics better.Moreover,ray parameter can be obtained directly from seismic data and does not depend on the speed of overlying strata,which avoid the inversion error caused by inaccurate velocity model.After the introduction of basic concepts and elastic parameters inversion of ray parameters,ray elastic impedance inversion of different ray parameters have been done with the method of Bayesian sparse pulse inversion on the basis of P stack data.And elastic parameters have been obtained with constrained searching method.Compared with the pre-stack elastic parameter inversion based on angle,the inversion results of the new method have high resolution and high accuracy.The method has been used to predict the reservoirs of Xinma and Yuanba areas in Sichuan Basin.Exploration results confirmed that the method is reliable and accurate,and the inversion results have significant meanings for the late exploration.

Cite this article

Liu Ling, Tang Da-zhen, Wang Feng, Liu Li-hui, Zhang Ling-ling, Liu Yi . Pre-stack elastic parameter inversion of ray parameters applied to reservoir prediction[J]. Natural Gas Geoscience, 2016 , 27(8) : 1541 -1548 . DOI: 10.11764/j.issn.1672-1926.2016.08.1541

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