Reservoir characteristics constrained dispersion AVO fluid detection method and its application
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.
reservoir characteristicstime frequency analysisdispersion AVOfluid detection
万方数据
维普
