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Research on the method of shear wave prediction based on rock physics modeling |
LIU Lan-Feng1( ), YIN Long2, HUANG Han-Dong3( ), ZHOU Zhen-Ya3, DONG Jin-Chao3 |
1. Sinopec Petroleum Exploration and Development Research Institute,Beijing 100083,China 2. Research Institute of Petroleum Geophysical Prospecting,SINOPEC,Nanjing 211103,China 3. College of Geosciences,China University of Petroleum-Beijing,Beijing 102249,China |
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Abstract Shear wave velocity plays an important role in seismic forward modeling,fluid prediction and AVO analysis.However,due to the high cost of shear wave logging,there are no shear wave velocity logging data in some work areas.The prediction method of shear wave based on rock physics modeling is specific and accurate.In this paper,the method of calculating effective elastic modulus proposed by Sabrina is adopted,and the assumption conditions of CAO for shear wave prediction by this method are extended,rock physics modeling is performed,and the measured porosity is used to calculate the pore compliance so as to further predict the shear wave.Finally,combined with the actual data,the cross velocity data are used to conduct verification,and the results show that the effect is fairly good.
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Received: 24 September 2020
Published: 21 December 2021
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Corresponding Authors:
HUANG Han-Dong
E-mail: syky@sinopec.com;webhhd@163.com
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Numerical simulation of pore compliance parameters with porosity
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The process of S-wave prediction
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Comparison of the predicted shear-wave velocity a—the prediction results of this method;b—this method prediction error;c—the predictiction results of the empirical formula;d—empirical formula prediction error
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The estimation results of shear-wave of producing well a—production well 1;b—production well 2
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The statistic graph of P-wave velocity versus poisson's ratio
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Results of the predicted shear-wave velocity(a) and vp/vs ratio(b)
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Local details of the predicted shear-wave velocity(a) and vp/vs ratio(b)
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The profile of possion ration cross well 1
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