| 直接找油气的地球物理新原理的进展现状 |
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| 引用本文： | 顾功叙.直接找油气的地球物理新原理的进展现状[J].地球物理学报,1991,34(1):107-114. |
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| 作者姓名： | 顾功叙 |
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| 作者单位： | 国家地震局地球物理研究所, 北京 100081 |
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| 摘 要： | 近年来,国际上利用地震反射波勘探技术直接找油气的探索研究受到普遍重视.本文试图针对这一发展历史作一综述. 首先,介绍Knott（1899）和Zoeppritz（1919）分别导出的反射波振幅公式进行的数值计算,从而发现振幅与入射角的变化关系及其受反射面两侧岩层泊松比值的影响.然后,列举了几处油气区地震波勘探直接找油气的实例,以试验此项新原理在实践中所遇到的问题,说明直接找油气的地球物理新方法是可取的,是有前途的,但目前还不够有效,要达到实用还有一段较长的距离,因此,有进一步加强基础性实验研究的必要.
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| 关 键 词： | 直接找油气 振幅-炮检距 反射系数 泊松比 |
| 收稿时间： | 1990-03-03 |
ON THE PRESENT STATUS OF THE PROGRESS OF RESEARCHES FOR EXPLORING THE POSSIBILITY OF DIRECT DETECTION OF HYDROCARBON BY GEOPHYSICS |
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| Gu GONG-XU.ON THE PRESENT STATUS OF THE PROGRESS OF RESEARCHES FOR EXPLORING THE POSSIBILITY OF DIRECT DETECTION OF HYDROCARBON BY GEOPHYSICS[J].Chinese Journal of Geophysics,1991,34(1):107-114. |
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| Authors: | Gu GONG-XU |
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| Institution: | Institute of Geophysics, State Seismological Bureau, Beijing 100081 |
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| Abstract: | In recent years, direct detection of oil and gas by the seismic reflection technique has been widely attempted. In this article, it is aimed to review the progress from certain published results.The paper will begin with the formulas of reflection of elastic waves at the boundary surface between different solid media, as derived by C. G. Knott in 1899 and K. Zoeppritz in 1919 and the ensuing numerical computations by the use of those formulas, resulting in the finding of the relation between the variation of the amplitude of reflected waves with the distances from receivers to the seismic source along seismic profiles, and also the effect of Poisson's ratio of both media on such relationship.Then several examples of practical application for direct detection of oil and gas by reflected seismic waves in areas of seismic exploration are described. The purpose is to look for problems to be encountered in employing this new technique.Finally, in a discussion, it is anticipated that this new technique is prospective. However, at present, it is still not usable, far from being practically applied. It should be subjected to long and continued basic research in the future. |
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| Keywords: | Direct detection of oil and gas Amplitude versus offset (AVO) Reflection coefficient Poisson's ratio |
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