Complex magnetic well magnetic field three-component calculation method, device, equipment and medium

Abstract

The invention discloses a three-component calculation method and device for a magnetic field in a complex magnetic well, equipment and a medium. A target area is determined, and a prism model internally containing the target area is constructed; performing mesh generation on the prismoid model, dividing the prismoid model into a plurality of small prismoid units, and assigning the magnetic susceptibility of each small prismoid unit; adopting a three-dimensional discrete convolution method to calculate each component of three components of a well magnetic field generated by each small prismoid unit at a well observation point; and on the basis of each component of the in-well magnetic field three components generated by each small prism unit at the in-well observation point, obtaining the in-well magnetic field three components generated by the whole prism model at the in-well observation point. The method can adapt to rapid and high-precision calculation of the three components of the magnetic field in the magnetic body well with any magnetic susceptibility distribution and complex shapes, and unification of calculation precision and calculation efficiency of the three components of the magnetic field in the complex magnetic body well is achieved.

Description

technical field [0001] The invention belongs to the technical field of magnetic field numerical simulation of magnetic bodies, and in particular relates to a method, device, equipment and medium for calculating the three-component magnetic field in a magnetic body with arbitrary magnetic susceptibility distribution and complex shape. Background technique [0002] Compared with ground and airborne magnetic prospecting, borehole magnetic prospecting is closer to the field source body and can better reflect information such as the location of the field source body. With the development of borehole magnetic observation equipment, borehole magnetic field measurement has gradually become an important exploration method. In order to meet the requirements of joint inversion of surface-well magnetic field three-component data, efficient calculation of three-component magnetic field in well has become an urgent problem to be solved. Compared with the three-component calculation of gr...

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Problems solved by technology

[0005] Aiming at the problem of low calculation accuracy of the current three-component calculation method of the magnetic field in a magnetic body, and considering the requirements for calculation efficiency of joint surface-in-well magnetic field data inversion imaging, human-computer interaction modeling and interpretation, the present invention proposes a complex magnetic The three-component calculation method, device, equipment and medium of the magnetic field in the body well, which can be adapted to the fast and high-precision calculation of the three-component magnetic field in the magnetic body well with arbitrary magnetic susceptibility distribution and complex shape

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