OBS data bubble suppression method and processing terminal

A technology of data and bubbles, applied in the field of OBS data bubble suppression method and processing terminal, can solve the problems of OBS data influence, bubble OBS data influence, etc.

Active Publication Date: 2021-05-18
GUANGZHOU MARINE GEOLOGICAL SURVEY +1
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  • Claims
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Problems solved by technology

[0004] In view of the deficiencies in the prior art, one of the purposes of the present invention is to provide a method for suppressing OBS data bubbles, which can solve the problem of supp...

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  • OBS data bubble suppression method and processing terminal
  • OBS data bubble suppression method and processing terminal
  • OBS data bubble suppression method and processing terminal

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Embodiment Construction

[0040] Below, the present invention will be further described in conjunction with the accompanying drawings and specific embodiments.

[0041] Such as Figure 1-Figure 9 Shown, a kind of OBS data bubble suppression method comprises the steps:

[0042] Step 1: Preprocess the OBS data actually collected by the submarine seismograph, and obtain the water survey P component data and the land survey Z component data with better data quality after preprocessing. The preprocessed water survey P component data is recorded as P ori (t). Among them, preprocessing includes data observation system definition, relocation, and large-value interference suppression to obtain better quality data, such as data with higher activity signal-to-noise ratio.

[0043] Wherein, each OBS data correspondingly includes several water survey P component data, and each water survey P component data is in different offset ranges.

[0044] Step 2: For each OBS data, screen out some water survey P componen...

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Abstract

The invention discloses an OBS data bubble suppression method and a processing terminal. The method comprises the steps of: preprocessing OBS data to obtain water detection P component data and land detection Z component data; screening out a plurality of pieces of water detection P component data within a certain offset range to obtain screened water detection P component data; calculating an average effect P component seismic wavelet of all P component seismic wavelets; calculating to obtain a P component seismic wavelet after bubble suppression and a bubble suppression operator; repeating the wavelet acquisition step on the land detection Z component data to obtain an average effect Z component seismic wavelet; calculating a matching operator of the Z component seismic wavelet and the P component seismic wavelet; and applying the matching operator and the bubble suppression operator to the P component data to obtain water detection P component data after bubble suppression. The amplitude and phase characteristics of the water detection P component data and the land detection Z component data are well kept consistent, and the influence of the bubble effect on the P component is eliminated.

Description

technical field [0001] The invention relates to the technical field of seismic data processing, in particular to an OBS data bubble suppression method and a processing terminal. Background technique [0002] The submarine seismograph is a seismic data acquisition device capable of receiving four component information of P, X, Y, and Z. The submarine seismograph is also called OBS, and the seismic data collected by it is called OBS data. In actual use, the geophone is usually placed on the seabed and the observation method of sea surface shooting and seabed reception is adopted. Among them, the P component is the water survey component, receiving the longitudinal wave information, the X, Y, and Z components are the three components of the land survey, the X, Y components are the horizontal components, receiving the transverse wave information, and the Z component is the vertical component, receiving the longitudinal wave information . [0003] In the actual OBS data collect...

Claims

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Application Information

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IPC IPC(8): G01V1/36G01V1/38
CPCG01V1/362G01V1/38G01V2210/52
Inventor 徐云霞刘斌文鹏飞薛花
Owner GUANGZHOU MARINE GEOLOGICAL SURVEY
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