Velocity field model construction method, device, equipment, storage medium and product

By obtaining exploration data of wedge-shaped strata, generating velocity structure characteristic data, conducting horizon comparison interpretation and velocity analysis, and constructing two-dimensional velocity plane results, the difficulty of constructing a velocity field model for wedge-shaped strata was resolved, and accurate seismic prediction depth was achieved.

CN118033736BActive Publication Date: 2025-09-26CHINA NAT PETROLEUM CORP +1
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Patent Information

Application Number
CN202211415698.4
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2022-11-11
Publication Date
2025-09-26
Estimated Expiration
2042-11-11

AI Technical Summary

Technical Problem

When constructing velocity field models, existing technologies have difficulty accurately processing wedge-shaped strata with strong vertical and horizontal heterogeneity and complex velocity field variations, resulting in earthquake prediction depths exceeding industry standards.

Method used

By acquiring exploration data of wedge-shaped strata, generating velocity structure characteristic data, conducting horizon comparison and interpretation, determining time thickness and plane distribution results, performing velocity analysis, constructing two-dimensional velocity plane results, and integrating multiple areas, a velocity field model of the wedge-shaped strata is formed.

Benefits of technology

It improves the accuracy of the wedge-shaped formation velocity field model and the precision of earthquake prediction depth, meets industry standards, and solves the difficulty of constructing the velocity field model.

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Abstract

The present application discloses a method, apparatus, device, storage medium, and product for constructing a velocity field model, relating to the field of oil and gas seismic exploration. The method comprises: obtaining exploration data for multiple regions corresponding to a wedge-shaped formation; generating multiple velocity structure characteristic data corresponding to the region based on the exploration data, and determining different longitudinal velocity differentiation layers corresponding to the region; performing a stratum comparison interpretation on the multiple velocity differentiation layers based on the exploration data to obtain time thickness and plane distribution results corresponding to the multiple velocity differentiation layers; performing velocity analysis on the velocity differentiation layers based on the time thickness and plane distribution results to obtain a two-dimensional velocity plane result corresponding to the region; integrating the two-dimensional velocity plane results corresponding to the multiple regions to construct a velocity field model corresponding to the wedge-shaped formation, thereby solving the difficulty of constructing a velocity field model due to the strong vertical and horizontal heterogeneity of the wedge-shaped formation and the complex variation characteristics of the velocity field.
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