The fluid identification technology based on AVO method obtains reservoir fluid response charac-teristics by solving the Zoeppritz equation,but directly solving Zoeppritz is extremely difficult.Therefore,scholars have proposed different forms of AVO approximate equations.However,these approximate equa-tions are based on a series of assumptions,and there are errors with the accurate solution of Zoeppritz equa-tion,which affects the effectiveness and accuracy of reservoir fluid detection.The AVO inversion method based on reservoir feature constraints first represents the reflection coefficient with a linear universal formu-la,and then constructs a basis function that can reflect reservoir information by using Monte Carlo random simulation method,thereby completing the optimization of the AVO equation.The prior information of the reservoir serves as a constraint condition,making this method targeted in the study of reservoir fluids while ensuring the accuracy of inverting fluid properties.Combining high-precision time-frequency analysis with AVO inversion method constrained by reservoir characteristics,the frequency related dispersion AVO inversion is realized,which further improves the accuracy of reservoir fluid property detection.
关键词
储层特征/时频分析/频散AVO/流体检测
Key words
reservoir characteristics/time frequency analysis/dispersion AVO/fluid detection
维普
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