吉林大学学报(地球科学版) ›› 2017, Vol. 47 ›› Issue (3): 884-898.doi: 10.13278/j.cnki.jjuese.201703302
姚振岸1,2, 孙成禹1,2
Yao Zhen'an1,2, Sun Chengyu1,2
摘要: 随着地震勘探的不断深入,对薄互层反射机理的研究变得越来越重要。为了准确获得薄层的频率特性并了解其时移变化规律,本文从弹性波动理论出发,讨论分析了薄层的反射AVA/AVF(amplitude variation with incident angle/amplitude variation with frequency)特征,并进行了数值模拟实验予以验证;基于实际测井资料和岩石物理等效介质理论,分析了含流体薄层的时移地震AVA/AVF特征。研究表明:薄层厚度和频率对薄层反射振幅响应的影响是等价的。随着薄层厚度的增加,薄层反射频率特性逐渐出现周期性变化;随着入射角度的增加,薄层反射频率特性逐渐向高频方向延伸。在薄层油气藏注水开发过程中,随着含水饱和度的增大,薄层反射P波频率特性向高频方向延伸,而薄层反射P-SV波频率特性基本保持不变。
中图分类号:
[1] 徐果明, 李跃, 倪四道, 等. 薄互层等效横向各向同性的研究[J]. 石油地球物理勘探, 1996, 31(6): 792-805. Xu Guoming, Li Yue, Ni Sidao, et al. Research on Quivalent Azimuthal Isotropy of Thin Interbed Medium[J]. Oil Geophysical Prospecting, 1996, 31(6): 792-805. [2] 张军华, 陆文志, 王月英, 等. 薄层地球物理特征再认识[J]. 石油物探, 2004, 43(6): 541-546. Zhang Junhua, Lu Wenzhi, Wang Yueying, et al. Research of Geophysics Characteristics in Thin-Beds[J]. Geophysical Prospecting for Petroleum, 2004, 43(6): 541-546. [3] Juhlin C, Young R. Implication of Thin Layers for Amplitude Variation with Offset (AVO) Studies[J]. Geophysics, 1993, 58(8): 1200-1204. [4] Brekhovskikh L M. Wave in Layered Media[M]. 2nd ed. Pittsburgh: Academic Press, 1976. [5] 朱超, 夏志远, 王传武, 等. 致密油储层甜点地震预测[J]. 吉林大学学报(地球科学版), 2015, 45(2): 602-610. Zhu Chao, Xia Zhiyuan, Wang Chuanwu, et al. Seismic Prediction for Sweet Spot Reservoir of Tight Oil[J]. Jounal of Jilin University (Earth Science Edition), 2015, 45(2): 602-610. [6] Widess M B. How Thin Is a Thin Bed?[J]. Geo-physics, 1973, 38(6): 1176-1180. [7] Bakke N E, Ursin B. Thin-Bed AVO Effects[J]. Geophysical Prospecting, 1998, 46(6): 571-587. [8] Yinbin L, Schmitt D R. Amplitude and AVO Re-sponses of a Single Thin Bed[J]. Geophysics, 2003, 68(4): 1161-1168. [9] Pan W, Innanen K A. AVO/AVF Analysis of Thin Beds in Elastic Media[C]//SEG Annual Meeting. Houston: Society of Exploration Geophysicists, 2013: 373-377. [10] 印兴耀, 秦秋萍, 宗兆云. 数字岩石物理中弹性参数的有限差分计算方法[J]. 地球物理学报, 2016, 59(10): 3883-3890. Yin Xingyao, Qin Qiuping, Zong Zhaoyun. Simulation of Elastic Parameters Based on the Finite Difference Method in Digital Rock Physics[J]. Chinese Journal of Geophysics, 2016, 59(10): 3883-3890. [11] Toksöz M N, Cheng C H. Velocities of Seismic Waves in Porous Rock[J]. Geophysics, 1976, 41(4): 621-645. [12] Gassmann F. Elastic Waves Through a Packing of Spheres[J]. Geophysics, 1951, 16(4): 673-685. [13] 孙成禹. 地震波理论与方法[M]. 东营: 中国石油大学出版, 2007. Sun Chengyu. Theory and Methods of Seismic Waves[M]. Dongying: China University of Petroleum Press, 2007. [14] 印兴耀, 李龙. 基于岩石物理模量的纵、横波速度反演方法[J]. 石油物探, 2015, 54(3): 249-253. Yin Xingyao, Li Long. P-Wave and S-Wave Velocities Inversion Based on Rock Physics Model[J]. Geophysical Prospecting for Petroleum, 2015, 54(3): 249-253. [15] 孙成禹, 李晶晶, 唐杰, 等. 基于测井资料的储层模量反演与地震反射特征分析[J]. 石油物探, 2015, 54(3): 350-358. Sun Chengxu, Li Jingjing, Tang Jie, et al. Reservior Moduli Inversion and Seismic Reflection Characteristics Analysis Based on Loggjing Data[J]. Geophysical Prospecting for Petroleum, 2015, 54(3): 350-358. [16] 杨文采. 非线性地球物理反演方法:回顾与展望[J]. 地球物理学进展, 2002, 17(2): 255-261. Yang Wencai. Non-Linear Geophysical Inversion Methods: Review and Perspective[J]. Progress in Geophysics, 2002, 17(2): 255-261. [17] 王振国, 陈小宏, 王克斌, 等.多参数优化的模拟退火法波阻抗反演[J].石油物探, 2007, 46(2): 120-125. Wang Zhenguo, Chen Xiaohong, Wang Kebin, et al. Simulated Annealing Wave Impedance Inversion Through Multi-Parameter Optimization[J]. Geophysical Prospecting for Petroleum, 2007, 46(2): 120-125. [18] 李振春, 张华, 刘庆敏, 等. 弹性波交错网格高阶有限差分法波场分离数值模拟[J]. 石油地球物理勘探, 2007, 42 (5): 510-515. Li Zhenchun, Zhang Hua, Liu Qingmin, et al. Numeric Simulation of Elastic Wavefield Separation by Staggering Grid High-Order Finite-Difference Algorithm[J]. Oil Geophysical Prospecting, 2007, 42(5): 510-515. [19] 杨庆节, 刘财, 耿美霞, 等. 交错网格任意阶导数有限差分格式及差分系数推导[J]. 吉林大学学报(地球科学版), 2014, 44(1): 375-385. Yang Qingjie, Liu Cai, Geng Meixia, et al. Staggered Grid Finite Difference Scheme and Cofficicents Deduction of Any Number of Derivates[J]. Jounal of Jilin University (Earth Science Edition), 2014, 44(1): 375-385. |
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