| 含气饱和度对纵波首波速度、振幅及主频影响的实验结果 |
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| 引用本文： | 李宁,翁文波,谭廷栋. 含气饱和度对纵波首波速度、振幅及主频影响的实验结果[J]. 地球物理学报, 1988, 31(5): 588-593 |
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| 作者姓名： | 李宁 翁文波 谭廷栋 |
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| 作者单位： | 石油工业部石油勘探开发科学研究院研究生部 北京 |
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| 摘 要： | 虽然人们早已在声波测井中观察到天然气层的时差曲线有“周波跳跃”现象,并且,利用时差在气层增大和幅度在气层衰减的特点来勘探天然气的工作也有了报道,但含气饱和度Sg和声速V,特别是和振幅A、主频F（本文中均指纵波首波）之间究竟有什么联系,却一直是有待解决的问题。 通过对人工岩芯及井下取芯的测试,我们首次发现:1.纵波首波的振幅对气层最敏
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| 收稿时间： | 1987-08-05 |
EXPERIMENTAL RESULTS ABOUT INFLUENCE OF GAS SATURATION UPON COMPRESSIONAL HEAD WAVE VELOCITY, AMPLITUDE AND DOMINANT FREQUENCY |
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| LI NING WENG WEN-BO TAN TING-DONG. EXPERIMENTAL RESULTS ABOUT INFLUENCE OF GAS SATURATION UPON COMPRESSIONAL HEAD WAVE VELOCITY, AMPLITUDE AND DOMINANT FREQUENCY[J]. Chinese Journal of Geophysics, 1988, 31(5): 588-593 |
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| Authors: | LI NING WENG WEN-BO TAN TING-DONG |
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| Affiliation: | Graduate School of Research Institute of Petroleum Exploration and Development, Beijing |
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| Abstract: | The experimental observation of the influence of gas saturation upon comprcssional head wave velocity, amplitude and dominant frequency has been made. Two significant conclusions are obtained: 1. the amplitude decay of the compressional head wave is the most sensitive to gas-bearing layer, the frequency comes the second, and the velocity the third; 2. the water saturation in the large, small and capillary voids of a 100% water-saturated rock can be determined from Sg-RA and Sg-Rv curves, so that the permeability of the rock can be further determined. |
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| Keywords: | Gas saturation Head wave velocity Head wave amplitude Dominant frequency of head wave. |
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