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AVO技术的研究已有30多年的发展历程,其中有起有落。近年来AVO技术的应用日趋广泛,发展较快。在寻找非均质油气藏方面,AVO技术具有其他方法不可替代的作用。通过对横向小尺度体的模型设计,正演模拟的计算及与Zoeppriz方程计算理论值的对比,讨论了横向小尺度体大小变化、速度变化对反射系数的影响,得出了横向尺度大小及速度变化对反射系数的影响规律,总结了横向变速时反射系数随偏移距的变化规律。
AVO technology research has 30 years of development history, there are ups and downs. In recent years, the application of AVO technology is becoming more widespread and developing rapidly. In search of heterogeneous reservoirs, AVO technology has other irreplaceable role. Through the comparison of the model design, the forward modeling and the calculated theoretical value with the Zoeppriz equation, the influence of the lateral small scale body size and velocity variation on the reflection coefficient is discussed. The transverse scale size and speed The influence of the variation on the reflection coefficient, and the variation law of the reflection coefficient with the offset when the lateral speed change is summarized.