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A Practical Improvement Method for Source Location Estimation Based on Euler Deconvolution Method

A practicable and field source technology, applied in the field of geological exploration, can solve the problems such as the inability to effectively identify the field source distribution, the Eulerian inversion results are prone to divergence, and false solutions, etc. Solve the problem of divergence and reflect the effect well

Active Publication Date: 2021-08-24
CHONGQING UNIVERSITY OF SCIENCE AND TECHNOLOGY
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Problems solved by technology

[0006] The technical problem to be solved by the present invention is that the Euler results of the prior art using empirical structural index inversion are often inaccurate or the solution diverges, and are affected by the complexity of geological bodies and the superposition of source bodies, the Euler inversion As a result, divergence and false solutions (pseudo-solutions) are prone to occur, resulting in the inability to effectively identify the distribution of field sources

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  • A Practical Improvement Method for Source Location Estimation Based on Euler Deconvolution Method
  • A Practical Improvement Method for Source Location Estimation Based on Euler Deconvolution Method
  • A Practical Improvement Method for Source Location Estimation Based on Euler Deconvolution Method

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Embodiment 1

[0093] Such as figure 1 As shown, the specific process of the present invention in the noise-added model inspection includes,

[0094] (1) Construct a combination model of gravity anomalies at different scales (depth, thickness, size);

[0095] (2) Since the actual potential field data contains certain noise, in order to test the applicability of the method, the gravity anomaly combination model is added with 2% Gaussian noise and then Euler inversion is performed to analyze the stability of the inversion results;

[0096] (3) Calculation of derivatives of each order and each direction: calculate the first and second derivatives of the combined model gravity anomaly in the x, y and z directions, that is, obtain Vzx, Vzy, Vzz, Vzxx, Vzxy, Vzyy, Vzzx , Vzzy, Vzzz;

[0097] (4) Filter processing: Since the gravity anomaly of the combined model contains noise, all derivatives of each order are disturbed by noise, especially the second order derivative, so the upward continuation...

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Abstract

The present invention aims at the Euler inversion calculation problem of the horizontal position and depth of different burial depths, different thicknesses, and different scales of geological bodies, based on the Euler homogeneous equation and the normalized inclination angle method, and proposes an extended inclination that does not depend on the structural index Angle Euler deconvolution method (ETA_Euler), on the one hand, avoids the divergence of the solution caused by the selection of the empirical construction index, and on the other hand, avoids the "analytic singularity" existing in the calculation of each derivative of the extended tilt angle (ETA) .

Description

technical field [0001] The invention relates to the field of geological exploration, in particular to a practically improved method for estimating the location of a field source based on the Euler deconvolution method. Background technique [0002] Euler deconvolution, also known as Euler inversion method, is a potential field inversion method that can automatically estimate the location of field sources. This method is based on the Euler homogeneous equation, uses the potential field anomaly and spatial derivative, selects the structural index according to the shape of the field source, and automatically or semi-automatically delineates the boundary and depth of the geological body through the solution of the Euler homogeneous equation. The advantage of this method is that it does not need prior information on the physical properties of the field source, and only needs to determine the structural index related to the field source property in advance, so that the specific po...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/20G06F17/15G01V9/00
Inventor 陈青陈浩赖富强谭先锋汪佳蓓黄兆辉何加成黄小宇孙帅丁成艺
Owner CHONGQING UNIVERSITY OF SCIENCE AND TECHNOLOGY
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