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Method and device for realizing time varying spectrum simulation deconvolution

A deconvolution and time-varying spectrum technology, applied in the field of geophysical exploration, can solve the problems of easy overflow, difficult to determine the polynomial order, unable to effectively improve the resolution of seismic data, etc., and achieve the effect of stable algorithm and high computing efficiency.

Active Publication Date: 2015-11-11
BC P INC CHINA NAT PETROLEUM CORP +1
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Problems solved by technology

However, the order of the polynomial is not easy to determine, and it is easy to overflow during the solution process, which will cause unstable processing results and cannot effectively improve the resolution of seismic data

Method used

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  • Method and device for realizing time varying spectrum simulation deconvolution
  • Method and device for realizing time varying spectrum simulation deconvolution
  • Method and device for realizing time varying spectrum simulation deconvolution

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Embodiment Construction

[0054] In order to enable those skilled in the art to better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described The embodiments are only some of the embodiments of the present application, but not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the scope of protection of this application.

[0055] The specific implementation of the embodiment of the present application will be described in detail below with several specific examples.

[0056] The following firstly introduces an embodiment of a method for realizing time-varying spectrum simulation deconvolution in the present application. figure 1 It is a flowchart of an emb...

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Abstract

The invention provides a method and a device for realizing time varying spectrum simulation deconvolution. The method disclosed by the invention comprises steps of performing time frequency transformation processing on earthquake recording to obtain time frequency domain earthquake data, performing band limitation variable step length double curve smoothing processing on amplitude spectrum of the time frequency domain earthquake data to obtain a smoothened time frequency domain earthquake data amplitude spectrum, performing time averaging on the product of the amplitude spectrum of time frequency domain earthquake data and the smoothened time frequency domain earthquake data amplitude spectrum to obtain an wavelet simulation amplitude spectrum, utilizing the wavelet simulation amplitude spectrum and the smoothened time frequency domain earthquake data amplitude spectrum to determine a frequency domain time variable spectrum simulation deconvolution operator, multiplying frequency time domain variable spectrum simulation deconvolution operator with the time frequency domain earthquake data to obtain the earthquake data which has gone through the time frequency domain deconvolution and performing reverse time-frequency transformation on the earthquake data after the time frequency domain deconvolution to obtain the earthquake data after the variable spectrum simulation deconvolution.

Description

technical field [0001] The invention relates to the technical field of geophysical exploration, in particular to a method and device for realizing time-varying spectrum simulation deconvolution. Background technique [0002] In the field of geophysical exploration technology, high-resolution seismic data are needed to effectively identify thin reservoirs and improve the accuracy of seismic data interpretation. Generally, deconvolution methods can improve the vertical resolution of seismic data. The deconvolution method improves the resolution of seismic data by compressing seismic wavelets. Most of the convolution methods are based on the convolution model, that is, the reflection seismic record is regarded as the convolution of the seismic wavelet and the reflection coefficient sequence plus noise, and it is usually assumed that the seismic signal is a stationary signal, and the reflection coefficient sequence is random white noise sequence, the wavelet is the minimum pha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01V1/28
Inventor 陈海峰钱忠平李向阳罗国安黄少卿
Owner BC P INC CHINA NAT PETROLEUM CORP
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