一种基于气枪震源远场观测记录提取海面反射系数的方法
By recording the air gun source wavelet with a far-field hydrophone and separating the first wave from the ghost wave using a trend fitting method, the error problem of sea surface reflection coefficient extraction in marine seismic exploration was solved, the accurate determination of sea surface reflection coefficient was achieved, and the accuracy of data processing was improved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- XUZHOU UNIV OF TECH
- Filing Date
- 2025-02-08
- Publication Date
- 2026-07-17
AI Technical Summary
In marine seismic exploration, the accurate extraction of sea surface reflection coefficients is subject to errors, affecting processes such as source wavelet simulation and inversion, and multiple wave prediction and suppression.
By recording the air gun source wavelet using a far-field hydrophone, the first wave and the ghost wave are separated using a trend fitting method. The sea surface reflection coefficient is calculated, and the ghost wave is obtained by using frequency domain expression and the least squares error method. The accurate sea surface reflection coefficient is then obtained through inversion.
It enables accurate extraction of sea surface reflection coefficients, which serves subsequent data processing such as ghost wave and multiple wave suppression, wavelet deconvolution, etc., and improves the accuracy of data processing.
Smart Images
Figure CN120143263B_ABST