Multi-channel deconvolution processing method based on inclination angle constraint

A processing method and deconvolution technology, applied in seismic signal processing, geophysical measurement, measuring devices, etc., can solve the problems of seismic data track-to-trace connection neglect, horizontal discontinuity, etc., to protect spatial continuity and improve accuracy Effect

Pending Publication Date: 2021-01-01
地球脉动(无锡)科技有限公司
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Problems solved by technology

Although sparse pulse deconvolution can significantly improve the seismic resolution of raw data, but this method is based on a single-trace convolution model, that is, each trace of seismic data is processed separately, which makes the connection between seismic data traces Neglected, resulting in single-pass processing results that tend to produce lateral discontinuities

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  • Multi-channel deconvolution processing method based on inclination angle constraint
  • Multi-channel deconvolution processing method based on inclination angle constraint
  • Multi-channel deconvolution processing method based on inclination angle constraint

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[0031] The present invention is described in further detail now in conjunction with accompanying drawing. These drawings are all simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, so they only show the configurations related to the present invention.

[0032] For a 2D seismic section, the expression for the multi-channel convolution model: Among them, d(t,x) is the two-dimensional seismic data, that is, the original seismic data, w(t) is the seismic wavelet, r(t,x) is the two-dimensional reflection coefficient model, is the convolution operator.

[0033] Such as figure 1 As shown, the multi-channel deconvolution processing method based on the inclination constraint includes the following steps:

[0034] S1: Calculate the formation dip angle θ(t,x) according to the original seismic data d(t,x);

[0035] S2: Calculate the derivative of the reflection coefficient r(t,x) along the dip direction according t...

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Abstract

The invention relates to the technical field of seismic information processing in physical exploration, and discloses a multichannel deconvolution processing method based on an inclination angle constraint. The method specifically comprises the following steps: calculating a stratum inclination angle theta (t, x) according to original seismic data d (t, x), calculating a derivative of a reflectioncoefficient r (t, x) along the inclination angle direction according to the stratum inclination angle theta (t, x), and performing L2 norm constraint on the derivative of the reflection coefficient r(t, x) in the inclination angle direction; constructing a multi-channel deconvolution target function J (r) with the inclination angle constraint; and finally solving the deconvolution target function J (r) to obtain a reflection coefficient iterative solution formula. Spatial continuity of a deconvolution result is protected, the deconvolution processing precision is improved, and high-quality data is provided for later seismic interpretation and seismic inversion.

Description

technical field [0001] The invention relates to the technical field of seismic information processing in physical exploration, in particular to a multi-channel deconvolution processing method based on dip angle constraints. Background technique [0002] Seismic exploration is an exploration method that uses artificial seismic technology to detect underground structures. It uses a certain method to artificially excite and receive seismic waves, and obtains the reflection coefficient by processing the reflected signal, that is, the acquired seismic data. The reflection coefficient can represent the impedance difference between the strata, or it can be said that the place with the reflection coefficient is the underground Layered interface. [0003] In reflection wave seismic exploration, seismic records can generally be regarded as the convolution of seismic wavelets and reflection coefficient sequences. The main purpose of seismic deconvolution is to eliminate the influence...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01V1/28G01V1/30
CPCG01V1/282G01V1/28G01V1/306
Inventor 王磊刘春强马雄黄保赵妮
Owner 地球脉动(无锡)科技有限公司
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