a 1b / 2 t t ms λ /4 < λ /4 1 Fig. 1 Model of high-speed wedge Marangakis f 100 E f = A f A* f df A f A* f d

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1 GLOBAL GEOLOGY Vol. 32 No. 1 Mar : 薄层的识别与检测在反射地震学中是一个重要问题当地下存在薄层或更为复杂地层的情况下, 为消除地层内部吸收等因素对薄层识别的影响, 本文在积分能谱的基础上提出了加权积分能谱, 并通过模型证明了加权积分能谱比未加权积分能谱具有更好的薄层分辨效果, 同时结合高分辨率复数道分析方法, 证明了 x' ( t) 的三瞬参数与 d ( t) 褶积的函数具有更高的分辨率 : 薄层 ; 积分能谱 ; 加权积分能谱 ; 复数道分析技术 : P : A doi: /j. issn Thin layer distinguishing and analysis by weighted integral spectrum method and complex trace analysis technique QU Xin LIU Cai FENG Xuan YANG Qing-jie LU Yong-xu College of Geo-Exploration Science and Technology Jilin University Changchun China Abstract Thin layer distinguishing and inspection is an important issue in the reflection seismology. As there are thin layers or more complex formations underground to eliminate the influences of some factors on the thin layer distinguishing such as interior absorption of formation we use the weighted integral spectrum on the basis of the integral energy spectrum and prove through models that the weighted integral spectrum has better thin layer analysis effect than the unweighted integral energy spectrum. At the same time we combine the high-resolution complex trace analysis method to prove the three instantaneous parameter of x' t and function of d t convolution having higher resolutions. Key words thin layer integral energy spectrum weighted integral spectrum complex trace analysis technics Marangakis A Coruh C CB OSP - 02 OSR

1 115 8 12 13 1 1. 1 1a 1b 9-11 1 / 2 t t ms λ /4 < λ /4 1 Fig.

2 a 1b / 2 t t ms λ /4 < λ /4 1 Fig. 1 Model of high-speed wedge Marangakis f 100 E f = A f A* f df A f A* f df b 3b 2c 3c 2d 3d 10 ~ 60 Hz A f A*

3 Fig. 2 2 Model of high-speed rhythmic lenticle 3 Fig. 3 Model of homologous lenticle

4 1 117 a n f 100 E f = f n e af A f A* f df f n e af A f A* f df 10 Fig. 4 4 Contrast between integral energy spectrum and weighting integral energy spectrum

5 D t x t R x / t d t t = x t + ih t h t = * x t 1 /πt A t = x t 2 + h t 2 1 /2 φ t = actg h t /x t ω t = dφ t /dt x 2 t x' t X ω = x t e -iωt dω 5-5a x t = X ω e iωt df m /s m /s ω = 2πf - x t x' t = iωx ω e iωt df - 4 y t = x / t + ix / t * 1 / tπ = x / t * δ t + i / tπ y t = R / t d t = δ t + i / tπ y t x / t d t R t x t d t y t A t = x / t 2 + c t 2 1 /2 φ t = actg c t /x / ω t = dφ t /dt t D m /s m /s T 4 5b 5c Ricker Ormsby Ormsby Ricker Ormsby x' t x t D 1 iω x' t D 1 T 4 D d 5e x' t Ricker x t y t = x / T t + ic t 4 c t = x / t * 1 / tπ 6a Ricker Ormsby 6b 6c R t d d t D f = 2 f > 0 6d 6e D f = 0 f < 0 D f Ormsby Ricker D f

6 Fig. 5 Model of theory 3 L L a b a

7 Fig. 6 Model of theory 7 L80 Fig. 7 Seismic record in line

8 L80 Fig. 8 Integral energy spectrum in line 80 9 L80 Fig. 9 Instantaneous phase figure in line 80

9 LIU Cai. Thin-layer recognition by means of weighted integrated energy spectrum J. Geophysical Prospecting x' t for Petroleum J. 1 Widess M B. How thin is a thin bed J. Geophysics J LI Qing-zhong. The frequency and amplitude of seismic waves from hydrocarbon bearing sandstone J. Oil Geophysical Prospecting plex trace analysis method to oil reservoir description 3. master's degree thesis D. Changchun Jilin University J LI Qin-xue FU Lei ZHANG Xiang-jun et al. Analysis 11. of seismic response and technique of recognization in the D. thin layers J. Global Geology LI Peng. On the structure identification technology 4. J SU Sheng-fu. Thin-reservoir reflection and the quantitative interpretation method J. Oil Geophysical Prospecting Marangakis A Costain J K Coruh C. Use of integrated energy spectra for thin-layer recognition J. Geophysics J GAO Zhen-shan JIANG Lian-bin. Multi-scale sismic signal attribute analysis J. Global Geology D FENG Zhi-hui. The application of high resolution com based on seismic instantaneous information and coherence algorithm master's degree thesis D. Changchun Jilin University J J FENG Zhi-hui WANG Shi-yu LIU Cai et al. Method ZHANG Yu-fen XIONG Wei-gang. Characteristic analysis of instantaneous characteristic parameters analysis for high resolution seismic signal J. Journal of Jilin University Earth of amplitude spectra of reflection coefficient of thin interbedding in oil prospecting J. Earth Science Science Edition Suppl J. J HUANG Xu-de. Discussion on notches in thin bed J. HE Xi-lei HUANG De-ji WEN Xiao-tao et al. Progress in Exploration Geophysics Seismic space instantaneous parameter analysis and its application J. Computing Techniques for Geophysical and Geochemical Exploration

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