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Magnetic susceptibility inversion method and system

A magnetic susceptibility and inversion technology, applied in the field of magnetic susceptibility inversion methods and systems, can solve problems such as unfavorable field construction, low calculation efficiency, and memory consumption, and achieve the goal of improving inversion efficiency, improving calculation efficiency, and reducing memory space Effect

Pending Publication Date: 2021-11-02
青海省第三地质勘查院
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Problems solved by technology

[0004] In the existing magnetic susceptibility inversion technology, the generalized inverse iterative inversion optimization method and the damped generalized inverse iterative inversion optimization method are mostly used, but the existing inversion techniques have certain shortcomings, including: 1) Due to the 2) The measurement points must be regularly distributed, which is not conducive to field construction; 3) The inversion equations are complicated to solve and the convergence is slow; 4) The parameters cannot be controlled to improve the inverse 5) Due to the characteristics of the algorithm itself, it is not conducive to decomposing complex large-scale inversion problems into a limited number of small problems for parallel solution

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Embodiment Construction

[0044] Next, the technical solutions in the embodiments of the present invention will be described in connection with the drawings of the embodiments of the present invention, and it is understood that the described embodiments are merely the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art are in the range of the present invention without making creative labor premise.

[0045] It is an object of the present invention to provide a magnetization inversion method and system to reduce the required memory space, improve computational efficiency, and further improve inversion efficiency.

[0046] In order to make the above objects, features, and advantages of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0047] figure 1 Flow diagram of th...

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Abstract

The invention relates to a magnetic susceptibility inversion method and system. The method comprises the following steps: S1, obtaining a spatial domain residual error based on an observed magnetic field intensity and a theoretical magnetic field intensity; S2, representing the spatial domain residual error through two-dimensional inverse discrete Fourier transform based on the wavenumber domain residual error; S3, obtaining wave number domain model disturbance based on the spatial domain residual error, and further obtaining spatial domain model disturbance based on Fourier inversion; and S4, obtaining a magnetic susceptibility inversion model based on the spatial domain model disturbance. The required memory space is reduced, the calculation efficiency is improved, and the inversion efficiency is further improved.

Description

Technical field [0001] The present invention relates to the field of geophysical techniques, and more particularly to a magnetization inversion method and system. Background technique [0002] Magnetic measurement has a wide range of applications in the field of geophysical exploration. For example, in the mineral exploration, the magnetic method can be used to determine the body parameters; in the oil exploration, the magnetic method can be used to map underground deposition characteristics and disadvantages to control the deposition background of the deposited basin. [0003] The inversion of physical parameters, such as calculating magnetic system and magnetization, is a major scientific problem using magnetic field data. In practical applications, the magnetization model of the target geographic area can be reflected, and the magnetization model of the target geographic area can be reflected by the magnetization model to reflect the magnetic system of each geographic location...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/12G06F17/14G06F17/18
CPCG06F17/12G06F17/141G06F17/18G01R33/16G01R33/1292G01V3/08
Inventor 王丽君王金海何书跃喻忠鸿张勇孟军海胡海峰
Owner 青海省第三地质勘查院
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