A method for suppressing obs data bubbles and a processing terminal

A technology of data and bubbles, which is applied in the field of OBS data bubble suppression method and processing terminal, can solve the problems of OBS data impact, bubble OBS data impact, etc., to achieve the effects of eliminating impact, facilitating identification and tracking, and protruding effective signals

Active Publication Date: 2021-12-21
GUANGZHOU MARINE GEOLOGICAL SURVEY +1
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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 suppressing the impact of bubbles on OBS data;
[0005] The second object of the present invention is to provide a processing terminal, which can solve the problem of the impact of air bubbles on OBS data

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  • A method for suppressing obs data bubbles and a processing terminal
  • A method for suppressing obs data bubbles and a processing terminal
  • A method for suppressing obs data bubbles and a 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 a method for suppressing OBS data bubbles and a processing terminal. The method includes: preprocessing the OBS data to obtain the P component data of the water survey and the Z component data of the land survey; P component data, get the screened water survey P component data; calculate the average effect P component seismic wavelet of all P component seismic wavelets; calculate the P component seismic wavelet and bubble suppression operator after bubble suppression; Repeat the wavelet acquisition steps for the Z component data to obtain the average effect Z component seismic wavelet; calculate the matching operator of the Z component seismic wavelet and the P component seismic wavelet; apply the matching operator and the bubble suppression operator to the P component data, Obtain the P component data of the water test after air bubble suppression. In the present invention, the amplitude and phase characteristics of the P component data of the water survey and the Z component data of the land survey are well 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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Patent Type & Authority Patents(China)
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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