A regularized cross-pore imaging method, system, computer device and storage medium

By constructing regular iterative inversion formulas and performing alternating iterative updates, the problem of high cost of forward calculation in the existing technology is solved, the inversion calculation efficiency and stability of the results are improved, and the accurate reconstruction of the structure of the region to be observed is achieved.

CN118587306BActive Publication Date: 2025-04-04SOUTHWEST PETROLEUM UNIV
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Patent Information

Application Number
CN202410456996.0
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2024-04-16
Publication Date
2025-04-04
Estimated Expiration
2044-04-16

AI Technical Summary

Technical Problem

In the process of solving the numerical calculation of the observation equation, a large number of forward calculations are required for each iteration, resulting in the reconstruction image of the area structure to be observed in a timely manner and the accurate estimate of the area structure to be observed is not accurate.

Method used

By constructing a regular iterative inversion formula, alternate iterative updates are performed using the relationship between observation data, slow matrix, ray tracing matrix and ray tracing operator to reduce the cost of forward calculations.

Benefits of technology

The inversion calculation efficiency and the stability of numerical results are improved, so that the reconstruction image of the final obtained area structure to be observed has real-time performance, and the structure to be observed can be accurately estimated.

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Abstract

The present invention provides a regularized cross-hole imaging method, system, computer equipment and storage medium, which belongs to the field of imaging technology, including dividing the geological area to be detected into a number of grid points and obtaining observation data; constructing a regularized iterative inversion formula through observation data, slowness matrix, ray tracing matrix, and ray tracing operator, according to the initial value of the slowness matrix, the initial value of the ray tracing matrix and the numerical value of the observation data, using the inversion formula, alternately iterating the ray tracing matrix and the slowness matrix in the formula, respectively, and obtaining the estimated values ​​of the slowness matrix and the ray tracing matrix according to the iteration end condition; obtaining an image of the structure of the area to be observed according to the estimated value and the grid structure of the area to be detected. This solution solves the problem in the prior art that a large number of forward calculations are required for each iteration in the numerical calculation process of solving the observation equation, resulting in the final reconstructed image of the structure of the area to be observed not being timely enough and unable to accurately estimate the structure of the area to be observed.
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