| 慢速地层井孔瞬态声场的数值研究 |
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| 引用本文： | 张海澜,李明轩.慢速地层井孔瞬态声场的数值研究[J].地球物理学报,1993,36(1):80-86. |
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| 作者姓名： | 张海澜 李明轩 |
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| 作者单位： | 中国科学院声学研究所声场声信息国家重点实验室, 中国科学院声学研究所声场声信息国家重点实验室, 北京 100080 |
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| 摘 要： | 文献给出了我们用实轴积分法计算的快速地层井孔中点声源产生的瞬态声场在不同时刻的空间分布,包括井内液体中的声波和井外地层中的弹性波.本文则用同样方法计算慢速地层的情况,并将两者结果作了比较.由于我们采用了宽频带、窄脉冲的理想声源,所得声场中各个波都很窄,互不干涉,因而能全面而清晰地反映整个声场的结构和发展过程.文内还介绍了计算中的几个具体问题.
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| 关 键 词： | 声波测井 数值研究 慢速地层 |
| 收稿时间： | 1992-03-14 |
NUMERICAL STUDY OF ACOUSTIC FIELD OF BOREHOLE IN SOFT FORMATION |
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| ZHANG HAI-LAN LI MING-XUAN.NUMERICAL STUDY OF ACOUSTIC FIELD OF BOREHOLE IN SOFT FORMATION[J].Chinese Journal of Geophysics,1993,36(1):80-86. |
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| Authors: | ZHANG HAI-LAN LI MING-XUAN |
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| Institution: | Institute of Acoustics, Academia Sinica, Beijing 100080 |
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| Abstract: | In Ref.1,2] space distributions at different times of a transient acoustic field radialed by a point source in a borehole in a fast formation were calculated by using the method of Real Axis Integral. The result, including the acoustic wave inside the porehole and the elastic wave outside the borehole, demonstrates the structure and development of the field clearly. The method now is used to the case of the slow formation borehole and the result is compared to that of the fast formation. The method is introduced in this paper in delail. |
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| Keywords: | Sound logging Numerical study Slow formation |
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