岩浆岩地震波阻抗反演与厚度预测

doi:10.11720/wtyht.2020.1457

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Abstract

The erosion of magmatic rock has a great destructive effect on coal seam and seriously affects the safety of coal mining.High-density three-dimensional seismic data have the advantages of wide band,wide azimuth and high-density sampling,and contains abundant structural and lithological information,which lays a foundation for the identification and prediction of magmatic rocks.A comprehensive comparison of logging curves shows that conventional logging curves has many shortcomings,for example,acoustic wave and density are less sensitive to magmatic rocks,and it is impossible for them to identify and accurately classify magmatic rocks.Logs such as resistivity and natural gamma are sensitive to magmatic rocks,and can be used to classify magmatic strata.The acoustic wave and density curves are reconstructed based on the horizon division results of the sensitive curve,and then curves sensitive to magmatic rocks are obtained.Based on the seismic impedance inversion,the seismic information is transformed into lithological information,so the existing of magmatic rocks is clear and the erosion range and thickness can be predicted.

Key words： magmatic rocks coalfield seismic prospecting logging seismic inversion

Received: 23 July 2019 Published: 26 October 2020

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	Jiang LI
	Min ZHI
	Shu-Jie ZHU

Cite this article:

Jiang LI,Min ZHI,Shu-Jie ZHU. The fictitious P-impedance inversion and thickness prediction of magmatic rock[J]. Geophysical and Geochemical Exploration, 2020, 44(5): 1233-1238.

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https://www.wutanyuhuatan.com/EN/10.11720/wtyht.2020.1457 OR https://www.wutanyuhuatan.com/EN/Y2020/V44/I5/1233

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