Phase-controlled elastic parameter modeling method, device and equipment and storage medium

Abstract

The invention provides a phased elastic parameter modeling method, device and equipment and a storage medium, and the method comprises the steps: obtaining logging parameters in a work area, and determining a seismic lithofacies on a seismic well-connected section in the work area; determining a fitting formula of elastic parameters of different lithofacies in the work area in a time domain according to the logging parameters; according to the fitting formula, elastic parameters of the seismic lithofacies on the seismic well-connected section are calculated, an elastic parameter model is obtained, through the method, the accuracy of the elastic parameter model can be improved, and the precision of subsequent seismic inversion is improved by improving the modeling accuracy.

Description

technical field [0001] The present invention relates to the field of geophysical exploration, in particular, to a method, device, device and storage medium for modeling phase-controlled elastic parameters. Background technique [0002] With the deepening of oil and gas exploration and development, reservoir prediction of complex exploration targets such as "small, scattered, and thin" is becoming more and more difficult, and seismic inversion requires higher and higher accuracy of velocity models. However, traditional modeling methods are difficult to meet the modeling accuracy requirements of complex geological bodies. At present, my country's onshore exploration and development targets have changed from structural oil and gas reservoirs to lithologic oil and gas reservoirs. It is increasingly difficult to predict reservoirs for geological targets such as thin reservoirs, vertical overlapping, and rapid lateral changes. Evolution or depth migration results, depending on the...

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Problems solved by technology

In the case of stable lateral changes in lithology, the obtained results are relatively reliable, but if there are lateral changes in lithology, lithofacies or structure, the constraint conditions are difficult to construct accurately, so the method itself has insurmountable interpretation ambiguity

Moreover, under the constraints of seismic horizons, the traditional method of simple linear interpolation and extrapolation of logging data is too random, it is difficult to control the interwell area, and the uncertainty has a great impact, which reduces the resolution of seismic inversion. Rate and Accuracy

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