碳酸盐岩喀斯特溶洞和裂缝系统的地震模拟与预测

贺振华; 文晓涛; 杜正聪

doi:10.11867/j.issn.1001-8166.2004.03.0399

地球科学进展 >

2004 , Vol. 19 >Issue 3: 399 - 402

DOI: https://doi.org/10.11867/j.issn.1001-8166.2004.03.0399

研究论文

碳酸盐岩喀斯特溶洞和裂缝系统的地震模拟与预测

贺振华 ,
文晓涛 ,
杜正聪

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成都理工大学油气藏地质与开发工程国家重点实验室，四川　成都　610059

贺振华（1938-），男，湖北大悟县人，教授，主要从事地层温压条件下油气储层岩石物理测试分析，复杂油气藏波场正反演研究.E-mail：hzh@cdut.edu.cn

收稿日期: 2004-04-05

修回日期: 2004-04-20

网络出版日期: 2004-06-01

基金资助

国家自然科学基金项目“裂缝油气藏特征与地震波属性参数相关关系的实验研究”（编号：40174039）；国家重点基础研究发展规划项目“中国叠合盆地油气田形成富集分布规律预测”（编号：G1999043311）资助

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SEISMIC MODELING AND PREDICATION OF CARBONATE KARST CAVES AND FRACTURE SETS

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Chengdu University of Technology, State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Chengdu 610059，China

Received date: 2004-04-05

Revised date: 2004-04-20

Online published: 2004-06-01

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摘要

提出了有助于确定碳酸盐岩裂缝带和喀斯特溶洞系统空间分布的地震正演模拟和预测方法。地震正演方法包含两个关键步骤，一是利用弹性波动方程计算含缝洞介质的有效弹性参数，另一步骤是根据有效弹性参数构成的等效地质模型，用单程声学波动方程进行波场延拓。数值模拟和实际地震数据的例子说明，将地震正演剖面与地震偏移剖面相结合进行对比分析有可能识别和预测碳酸盐岩地层中的缝洞发育带。

关键词： 预测; 有效参数; 等效地质模型; 碳酸盐岩缝洞发育带; 地震正演模拟

本文引用格式

贺振华 , 文晓涛 , 杜正聪 . 碳酸盐岩喀斯特溶洞和裂缝系统的地震模拟与预测[J]. 地球科学进展, 2004 , 19(3) : 399 -402 . DOI: 10.11867/j.issn.1001-8166.2004.03.0399

Abstract

In order to identify and predict the space distribution of fracturesets and karst caves in carbonate layers, a seismic forward modeling algorithm and a prediction method are presented in this paper. The seismic modeling algorithm includes in two key steps in which one is for calculating effective elastic parameters in a fractured and caved media by using elastic wave equation, the other is for wave extrapolating by using acoustic oneway wave equation based on an equivalent geology model consisting of those effective parameters.
Examples of numerical simulation data and real seismic data show that by combining and correlating the seismic forward modeling section with seismic migration section it is possible to identify and predict the fracturecave zone in carbonate rock layers.

Key words： Seismic forward modeling; Prediction; Equivalent geological model; Effective parameter; Carbonate fracture-cave zone

参考文献

［1］Hudson J A. Overall elastic properties of isotropic material with arbitrary distribution of circular cracks［J］. Geophysics,1990,55(3).
［2］He Qiaodeng(何樵登), Zhang Zhongjie(张中杰). Seismic Wave and It's Numerical Modeling in Transversely Isotropic Media［M］.Changchun: Jilin University Publishing House,1996.202-206(in Chinese).
［3］He Zhenhua(贺振华), Gui Zhixian(桂志先), He Yizhong(何义中), et al. Seismic P-Wave Characterization in Fracture-Filled Mixed Media, Advances in Pure and Applied Geophysics［M］. Beijing: Meteorology Publshing House,2002.121-125(in Chinese).
［4］Huang L J, Fehler M C, Wu R S. Extended local Rytov fourier migration method［J］.Geophysics, 1999, 64(5):1 535-1 545.
［5］Du Zhengcong(杜正聪),He Zhenhua(贺振华),Huang Deji(黄德济).Seismic wavefield numerical simulation of fractured reservoir［J］. Progress in Exploration Geophysics(勘探地球物理进展),2003,26(2):103-108(in Chinese).
［6］Du Zhengcong(杜正聪), He Zhenhua(贺振华), Wang Zhi(王志).Variation reference slowness Born approximation Fourier migration［J］.Journal of Jilin University(吉林大学学报), 2003, 33 (4) :555-558(in Chinese).
［7］Gazdag J, Sguazzero P. Migration of Seismic data by phase shift plus interpolation［J］. Geophysics, 1984，49(1): 124-131.
［8］He Zhenhua(贺振华), et al. Migration and Inversion of Seismic Reflection Data［M］.Chongqing：Chongqing University Publishing House,1989(in Chinese).

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