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Elastic parameter inversion method and device

An elastic parameter and inversion technology, which is applied in the direction of measuring devices, seismology, instruments, etc., can solve problems such as inversion of elastic parameters that cannot be applied to elastic wave impedance inversion

Active Publication Date: 2021-09-28
INST OF GEOLOGY & GEOPHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to provide an elastic parameter inversion method and device to alleviate the technical problems in the prior art that cannot be applied to elastic wave impedance inversion and elastic parameter inversion of multi-channel non-stationary seismic records

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  • Elastic parameter inversion method and device

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Embodiment 1

[0026] According to an embodiment of the present invention, an embodiment of an elastic parameter inversion method is provided. It should be noted that the steps shown in the flowcharts of the accompanying drawings can be executed 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.

[0027] figure 1 A flow chart of an elastic parameter inversion method provided by an embodiment of the present invention, such as figure 1 As shown, the method includes the following steps:

[0028] Step S101, acquiring multi-channel non-stationary seismic records. Multi-channel non-stationary seismic records are a collection of convolutions of non-stationary seismic wavelets and formation reflection coefficients at different incident angles.

[0029] Step S102: Determine the elastic wave impedance c...

Embodiment 2

[0079] The embodiment of the present invention provides an elastic parameter inversion device, the elastic parameter inversion device is mainly used to implement the elastic parameter inversion method provided in the above content of Embodiment 1, the elastic parameter inversion device provided in the embodiment of the present invention is described below Make a specific introduction.

[0080] Figure 4 It is a schematic structural diagram of an elastic parameter inversion device provided by an embodiment of the present invention. Such as Figure 4 As shown, it mainly includes: an acquisition unit 11, a first determination unit 12 and a second determination unit 13, wherein:

[0081] An acquisition unit 11, configured to acquire multi-channel non-stationary seismic records;

[0082] The first determination unit 12 is configured to determine the elastic wave impedance corresponding to the multi-channel non-stationary seismic records according to the established first correla...

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Abstract

The present invention provides an elastic parameter inversion method and device, which relate to the technical field of seismic inversion, comprising: first obtaining multi-channel non-stationary seismic records; The elastic wave impedance corresponding to the stationary seismic record; finally, the elastic parameters corresponding to the elastic wave impedance are determined according to the established second correlation model. The present invention can determine the elastic wave impedance according to the multi-channel non-stationary seismic records on the basis of these two correlation models, and then determine the elastic parameters, and is suitable for elastic wave impedance inversion and elastic parameter inversion of multi-channel non-stationary seismic records .

Description

technical field [0001] The invention relates to the technical field of seismic inversion, in particular to an elastic parameter inversion method and device. Background technique [0002] The description of the petrophysical properties of the reservoir requires a proper understanding of the elastic parameters, which can be reflected from pre-stack seismic data in the prior art by using the concept of elastic impedance (Elastic Impedance, EI). Can act. Elastic wave impedance is a generalization of variable incidence angle acoustic impedance, which provides a framework for obtaining elastic parameters by calibrating and inverting non-zero offset seismic data. Existing inversion techniques include AVO (Amplitude variation with offset, amplitude variation with offset) inversion, regularized inversion, etc., but these methods are not suitable for elastic wave impedance inversion of multi-channel non-stationary seismic records and elastic parameter inversion. Contents of the in...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01V1/30G01V1/28
CPCG01V1/306G01V1/282G01V2210/6242
Inventor 邹安祺王彦飞
Owner INST OF GEOLOGY & GEOPHYSICS CHINESE ACAD OF SCI
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