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
SEISMIC MODELING AND PREDICATION OF CARBONATE KARST CAVES AND FRACTURE SETS
Received date: 2004-04-05
Revised date: 2004-04-20
Online published: 2004-06-01
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
In order to identify and predict the space distribution of fracturesets 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 oneway 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 fracturecave zone in carbonate rock layers.
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