Phase-control modeling method for seismic elastic parameters on basis of coordinate multi-phase cooperation Kriging

Abstract

The invention discloses a phase-control modeling method for seismic elastic parameters on the basis of coordinate multi-phase cooperation Kriging. The phase-control modeling method includes steps of dividing modeling grids inside target layers by the aid of equal-proportion grid division processes and forming a plurality of planes which are used as target locations for modeling elastic parameters; respectively extracting well logging elastic parameters, seismic attribute parameters and sedimentary phase information which are used as modeling data, selecting master variables and selecting first cooperation variables and second cooperation variables; utilizing the obtain master variables, the obtained first cooperation variables and the obtained second cooperation variables as calculation parameters and carrying out interpolation calculation by the aid of coordinate multi-phase cooperation Kriging processes to obtain parameter values of all to-be-estimated points on the planes; carrying out generalization processing by the aid of anisotropic diffusion processes to obtain generalized and processed seismic elastic parameter modeling results. The parameter values of all the to-be-estimated points on the planes are used as multi-source data fusion modeling results. The phase-control modeling method has the advantages that calculation abnormal points and boundary noisy points can be eliminated, accordingly, the multi-information parameter synthetic modeling precision can be improved, a large quantity of real geological information is fused, and accordingly the phase-control modeling is good in applicability.

Description

technical field [0001] The invention relates to a phase-controlled modeling method of seismic elastic parameters based on co-located multi-phase collaborative kriging, which belongs to the technical field of parameter modeling in geophysics. Background technique [0002] Seismic elastic parameter modeling is a multi-information comprehensive analysis process. In complex geological environments, it is very difficult to maintain the stability and high precision of wave velocity modeling. Because the change of the entire geological system is affected by the natural environment, the buried depth of layers, and the thickness of soil and rock formations, and the complexity of geological structures will lead to great heterogeneity and uncertainty in the velocity model. Therefore, a modeling method that can integrate multiple geological conditions is needed to represent this heterogeneity and reduce uncertainty. To obtain fine seismic inversion or depth migration results, it also d...

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Problems solved by technology

[0005] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art, provide a phase-controlled modeling method of seismic elastic parameters based on co-kriging, and solve the problem that the modeling results obtained based on the collaborative kriging method are often It does not have a clear boundary and there are a lot of noise points, which cannot truly reflect the distribution of the elastic parameters of the underground medium. It can eliminate calculation abnormal points and boundary noise points, improve the accuracy of multi-information parameter comprehensive modeling and incorporate more real geology. information, with good applicability

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