AVO的内涵与外延

Intension and Extension of AVO

AVO从早先所认识到的一种现象已发展成一种完善的地球物理勘探技术,被广泛应用到油气勘探领域。详细叙述了AVO的理论基础,并由此导出对Zoeprritz方程的简化程序和相应的异常属性提取方法,分析了相关属性的地质意义;在此基础上,介绍了AVO在岩性预测、油气检测和裂缝检测方面的应用方法和实例。最后,对基于AVO技术过程所带来的资料品质改进,应用过程所存在的观点、重点环节和本身所存在的问题进行探讨和分析。

Amplitude variation with offset(AVO),which is developed into a perfect geophysical technique from an early recognized phenomenon,is widely used in oil and gas exploration.Theoretical basis of AVO is described in detail,and simplified procedures for Zoeppritz's equations and method for extracting related anomaly attribute are derived based on it.Geological significance of its related attributes is analyzed.On the basis stated above,methods and examples for lithological prediction,oil and gas detection and fracture detection by using AVO are introduced.Eventually the data quality improvement based on AVO technique,point of view existed in its application and critical links as well as the problems of itself are discussed and analyzed.