摘要
利用解析方法从常用两项AVO反演结果与Aki-Richards三项近似反演结果的误差分析入手,探讨两参数AVO反演方法之间的联系和在合适的条件下两项AVO反演结果可以彼此转换,能够为新方法建立提供理论依据。误差表达式表明,结合常用两项AVO反演方法的优点可以获得新的两项AVO方法,和利用测井资料能够合理地校正反演的结果。模型分析证明新的两项AVO近似式适用于更大角度范围的AVO分析以及校正反演结果的必要性。实际资料的应用显示新的两项AVO方法与局部校正方法联合应用能够提高砂泥岩地层参数的估算精度,改善地层结构成像。
Based on the error analysis of inverse result of between the common two-term AVO and the three-parameter of the Aki-Richards approximation and using the analytical method this paper discusses the relationship between various two-parameter AVO inversion methods.The result shows the two-term AVO inversion can convert each other under appropriate conditions provide a theory basis for creating new methods.Error expressions indicate that new two-term AVO methods can be obtained,combined with the merits of the commonly used two-term AVO inversion methods and that the result of AVO inversions can be legally calibrated using well-log data.Model analysis verifies that the new two-term AVO approximation has more usable range,and the calibration of inversion result is necessary.Application to actual data shows that the updating inversion results with local calibration can improve the interpretation of geologic configuration.
出处
《成都理工大学学报（自然科学版）》
CAS
CSCD
北大核心
2011年第5期581-587,共7页
Journal of Chengdu University of Technology: Science & Technology Edition
基金
国家自然科学基金"石油化工联合基金"重点项目(40839905)
关键词
两项AVO反演
误差表达式
等效性
局部校正
two-term AVO inversion
error expression
equivalence
local calibration
