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Inversion method and device for focal mechanism based on rock characteristics

A focal mechanism and rock technology, applied in the field of seismic focal mechanism inversion method and device based on rock characteristics, can solve the problems of multi-solution in simulation results and inability to obtain real and effective focal mechanism, so as to avoid multi-solution, The effect of guaranteeing authenticity

Active Publication Date: 2021-12-10
CHINA UNIV OF MINING & TECH (BEIJING)
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  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to provide a method and device for seismic focal mechanism inversion based on rock characteristics, so as to alleviate the technical problems in the prior art that the simulation results have multiple solutions and cannot obtain a real and effective seismic focal mechanism

Method used

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  • Inversion method and device for focal mechanism based on rock characteristics
  • Inversion method and device for focal mechanism based on rock characteristics
  • Inversion method and device for focal mechanism based on rock characteristics

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Embodiment 1

[0029] According to an embodiment of the present invention, an embodiment of a seismic source mechanism inversion method based on rock characteristics is provided. It should be noted that the steps shown in the flow chart of the accompanying drawings can be implemented in a computer system such as a set of computer-executable instructions and, although a logical order is shown in the flowcharts, in some cases the steps shown or described may be performed in an order different from that shown or described herein.

[0030] figure 1 A flow chart of a source mechanism inversion method based on rock characteristics provided by the embodiment of the present invention, such as figure 1 As shown, the method includes the following steps:

[0031] Step S101, collecting micro-seismic signals in the target monitoring area. In this embodiment, the definition of the above-mentioned target monitoring area can be determined according to the actual situation. For example, the target monitori...

Embodiment 2

[0058] An embodiment of the present invention provides a rock feature-based focal mechanism inversion device, the rock feature-based focal mechanism inversion device is mainly used to implement the rock feature-based focal mechanism inversion method provided in the above content of Embodiment 1, The following is a specific introduction to the source mechanism inversion device based on rock characteristics provided by the embodiment of the present invention.

[0059] Figure 4 It is a schematic structural diagram of a source mechanism inversion device based on rock characteristics provided by an embodiment of the present invention. like Figure 4 As shown, the source mechanism inversion device based on rock characteristics mainly includes: acquisition unit 11, prediction unit 12 and inversion unit 13, wherein:

[0060] Acquisition unit 11, for collecting the microseismic signal of target monitoring area;

[0061] The prediction unit 12 is used to predict the target rock char...

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Abstract

The present invention provides a rock feature-based focal mechanism inversion method and device, which relate to the technical field of microseismic monitoring. Firstly, the microseismic signals in the target monitoring area are collected; and then based on the target relationship model, the target corresponding to the microseismic signal is predicted. Rock characteristics; finally, based on the target rock characteristics, the focal mechanism of the rupture event in the target monitoring area is inverted. The present invention can ensure the authenticity of the data used in the inversion of the source mechanism by collecting the micro-seismic signals in the target monitoring area, and can obtain the fracture in the target monitoring area by predicting the target rock characteristics corresponding to the micro-seismic signals according to the target relationship model. The rock characteristics of the event occurrence, which can avoid the multi-solution of the focal mechanism, and then obtain a real, effective and unique focal mechanism.

Description

technical field [0001] The invention relates to the technical field of microseismic monitoring, in particular to a rock feature-based focal mechanism inversion method and device. Background technique [0002] In the process of microseismic monitoring, whether it is to monitor hydraulic fracturing or to ensure the stability of carbon dioxide migration and storage during the injection process, the rupture signals of underground reservoirs and other media due to the destruction of the original stress balance will be collected. , and then invert the focal mechanism. However, the existing focal mechanism inversion methods are only simulated in experiments, and the simulation results have multiple solutions. Therefore, the existing technology faces the technical problem that the focal mechanism has multiple solutions and cannot further obtain a true and effective focal mechanism. Contents of the invention [0003] The purpose of the present invention is to provide a method and ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01V1/28G01V1/30
CPCG01V1/288G01V1/306G01V2210/62
Inventor 郑晶孟令彬彭苏萍
Owner CHINA UNIV OF MINING & TECH (BEIJING)
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