A method and device for constructing dynamic Poisson impedance attributes

Abstract

The present invention provides a method and device for constructing dynamic Poisson impedance attributes. The method includes obtaining the original logging curve of the whole well section in the research work area and the logging interpretation conclusion curve; According to the logging curves of the three sections and the logging interpretation conclusion data, the static Poisson impedance property curves, hydrocarbon-bearing pore curves and fluid parameter curves with undetermined coefficients of the corresponding depth section are calculated respectively; Perform correlation analysis between the static Poisson impedance property curve with undetermined coefficient and the hydrocarbon-bearing pore curve of the corresponding depth section to obtain the undetermined coefficient corresponding to the maximum correlation coefficient; obtain the average value of the fluid parameters corresponding to the deep, middle, and shallow sections; Perform linear fitting on the undetermined parameter values ​​of the static Poisson impedance property curves of the deep, middle, and shallow layers and the average value of the fluid parameters in the corresponding depth section to obtain a linear relationship; obtain the dynamic Poisson impedance property curve.

Description

technical field [0001] The invention relates to a method and device for constructing dynamic Poisson impedance attributes, belonging to the technical field of petroleum geophysical exploration. Background technique [0002] With the increasing degree of petroleum exploration and development, the difficulty of exploration targets is becoming more and more difficult, and the requirements for exploration accuracy are getting higher and higher. The conventional reservoir prediction technology based on seismic information can no longer meet the requirements of high-precision reservoir identification. Requirements, especially in continental basins, such as river channels and beach bars, which are commonly developed in continental basins, have rapid changes in lateral physical properties and development of vertical multi-stage cycles, which makes it more difficult to detect reservoir physical properties and fluids, and the exploration risk is getting higher and higher. In recent ye...

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Problems solved by technology

The above methods have been widely used in oilfield development and have achieved certain beneficial effects, but there are also limitations, especially for geological problems with rapid changes in lateral physical properties and development of vertical multi-stage cycles. It is necessary to make full use of seismic information while , strengthen comprehensive analysis of seismic logging information, and continuously improve reservoir prediction methods

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