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Autonomous scanning seismic record extraction method for vibroseis

A technology of seismic recording and extraction method, which is applied in the field of seismic exploration and can solve the problems of inability to correlate acquisition records and so on.

Active Publication Date: 2021-08-13
SINOPEC SSC +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a method for extracting seismic records by self-scanning of a vibroseis, which solves the problem that if the scanning length in the field is too long, it cannot correlate the complete acquisition records. The actual production requirements have achieved very satisfactory results

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  • Autonomous scanning seismic record extraction method for vibroseis
  • Autonomous scanning seismic record extraction method for vibroseis
  • Autonomous scanning seismic record extraction method for vibroseis

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Embodiment Construction

[0042] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0043] An embodiment provided by the present invention: a method for extracting seismic records by self-scanning of a vibroseis, the method performs attribute processing and cutting and extraction on the continuous parent record data blocks and scanning signals obtained by self-scanning of the vibroseis, and then performs mutual Correlation processing extracts effective seismic records for subsequent seismic data processing. The key technical point is to cut and extract the parent record, and perform cross-correlation processing with the scanning signal. See the attached flow chart figure 1 ;Specific steps are as follows:

[0044] 1) Raw data preparation

[0045] First of all, two important data need to be prepared: the instrument vehicle produces a SEGD master recording data block every 30 seconds and the scanning signal recorded by each ...

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Abstract

The invention discloses an autonomous scanning seismic record extraction method for a vibroseis. The method comprises the steps of (1) preparing original data; (2) performing SEG-D seismic data format analysis; (3) preparing a mother record data block time attribute; (4) splicing mother record data; (5) carrying out scanning signal preparation; (6) searching corresponding time of the force signal and the master record GPS; and (7) carrying out cross-correlation on the force signal and the master record to obtain a single shot record of the vibroseis. According to the invention, the problem that complete acquisition records cannot be related if the scanning length is long in the field is solved, the method can adapt to the construction characteristics of autonomous scanning, the actual production requirements of autonomous scanning are met, and the method plays a positive role in promoting the application and popularization of efficient acquisition of the vibroseis.

Description

technical field [0001] The invention belongs to the field of seismic exploration, and relates to the construction of high-efficiency acquisition by self-scanning of a vibroseis in the seismic exploration, in particular to a method for extracting seismic records by self-scanning of a vibroseis. Background technique [0002] Since the 1960s, the vibrator has become one of the important excitation sources in seismic exploration. In the field of international seismic exploration, vibroseis has become the most important excitation source, and is widely used in oil and gas exploration and development. In recent years, with the continuous progress and development of geophysical prospecting technology and geophysical prospecting equipment, as well as the continuous and large demand for fossil energy in the development of national economy and strategic security, seismic exploration work has gradually moved to difficult areas. China Petroleum Orient Geophysics Corporation (hereinafte...

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Application Information

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IPC IPC(8): G01V1/24G01V1/32
CPCG01V1/24G01V1/325
Inventor 胡慧光段伟伟彭仁艳莫延钢张媛丁建强魏冰王广智颜晓霞杨晨莹
Owner SINOPEC SSC
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