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Global Geology 2012, 15(1) 78-84 DOI:
ISSN: 1673-9736 CN: 22-1371/P |
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High accuracy NMO correction and application for VTI media |
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ZHANG Bo1, HAN Liguo1, TAN Chenqing1, HUANG Fei1 and HAN Shoufu2 |
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1�� College of Geo-Exploration Science and Technology��Jilin University��Changchun 130026��China; 2�� 72946 Troops��People's Liberation Army��Zibo 255000��Shandong��China |
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Abstract��
It is difficult for normal moveout ( NMO) correction of shallow long offset of vertical transversely isotropic medium��as seismic event after conventional NMO correction experienced strong stretching and distortion due to interleaving of signal�� Even using higher order non-hyperbolic NMO correction��it still cannot get the right results�� This paper aims to improve the accuracy of NMO correction�� Based on the analysis of conventional NMO correction method and previous optimization move-out equation��we use longitudinal optimization method to correct seismic event�� The results of the theoretical model and the real data show that our method can completely remove NMO stretching and greatly improve correction accuracy�� |
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Keywords��
long offset
VTI
NMO stretch
longitudinal optimization
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Received Revised Online: |
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