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Method of fast correction processing of phase of seismic data

A phase correction and seismic data technology, applied in seismic signal processing and other directions, can solve the problems of time-consuming estimation of phase correction factors and low calculation efficiency

Active Publication Date: 2013-07-24
BC P INC CHINA NAT PETROLEUM CORP +1
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Problems solved by technology

Estimating the phase correction factor by sweeping method is very time-consuming and computationally inefficient

Method used

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  • Method of fast correction processing of phase of seismic data
  • Method of fast correction processing of phase of seismic data
  • Method of fast correction processing of phase of seismic data

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Embodiment Construction

[0102] A method for rapid phase correction processing of seismic data in the present invention is to eliminate the influence of residual wavelet phase by estimating the residual wavelet phase information and performing phase correction processing on seismic data records, so that the residual wavelet phase reaches or approaches zero phase to effectively improve seismic data resolution.

[0103] The present invention adopts following technical scheme to realize, comprises the following steps:

[0104] (1) Use artificial seismic sources to excite and collect seismic data, label the seismic data, define the observation system, velocity analysis, motion correction, deconvolution, stacking and other preprocessing work;

[0105] (2) Calculate the Kaiser window Hilbert factor sequence;

[0106] Calculating the Kaiser window Hilbert factor includes calculating a Kaiser window function, a Hilbert factor sequence and a Kaiser window Hilbert factor sequence. The Kaiser window function i...

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Abstract

The invention discloses a method of fast phase correction processing of seismic data. The method adopts a Kaiser window Hilbert factor sequence, confirms a Hilbert seismic sequence and directly calculates and confirms a best phase correction factor the through estimation of phase information of residual wavelets, the phase correction processing the is carried out on seismic data records, the fact that influences of the residual wavelet phases are eliminated is achieved, so that the residual wavelet phases reach or are close to a zero phase so as to effectively improve the resolution ratio of the seismic data. The method of the fast phase correction processing of the seismic data only processes the phase of the seismic data wavelets, does not change amplitude spectrum of the data and has the advantages of being little in calculated amount, high in computation speed, good in stability and high in computational accuracy of the correction processing of the phase and has a certain anti-noise property.

Description

technical field [0001] The present invention relates to oil field exploration, development and mining technology, specifically a method for fast phase correction processing of seismic data that provides high-resolution seismic graphics and data for reflecting underground formation layers and oil reservoir descriptions, and is especially suitable for seismic data The actual seismic data after deconvolution is processed, and the remaining wavelet phase is corrected to eliminate the influence of the residual wavelet phase of the seismic data and improve the resolution of the seismic data. Background technique [0002] With the development of seismic exploration technology, the difficulty and depth of oil and gas exploration are increasing, and the requirements for the resolution of seismic data are also increasing. Deconvolution is the most effective way to improve the resolution of seismic data. Seismic convolution model is one of the most basic models in seismic exploration ...

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Application Information

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IPC IPC(8): G01V1/36
Inventor 高少武赵波祝树云祝宽海
Owner BC P INC CHINA NAT PETROLEUM CORP
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