Statics correction of seismic data using refraction arrival times to determine short and long wavelength statics

The method separates and corrects for short-wavelength and long-wavelength statics in seismic data using refraction arrival times, improving seismic data accuracy and reducing computational costs in seismic data analysis.

WO2026117278A1PCT designated stage Publication Date: 2026-06-04DOWNUNDER GEOSOLUTIONS (AMERICA) LLC
View PDF 0 Cites 0 Cited by

Patent Information

Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
DOWNUNDER GEOSOLUTIONS (AMERICA) LLC
Filing Date
2025-07-03
Publication Date
2026-06-04

AI Technical Summary

Technical Problem

Existing seismic data analysis methods struggle to accurately separate and correct for short-wavelength and long-wavelength statics, particularly in noisy land-based seismic data, leading to distorted images of the Earth's subsurface and inefficiencies in Full Waveform Inversion (FWI) due to unpredictable near-surface velocities.

Method used

A method that separates long-wavelength and short-wavelength statics components from refraction arrival times, using wavelength filtering and refraction analysis to generate a velocity model, which is then refined through iterative processes to improve the accuracy of seismic data correction.

Benefits of technology

This approach enhances the efficiency and accuracy of seismic data correction, reducing computational intensity and improving the convergence of FWI by providing a more precise Earth velocity model, thereby enhancing subsurface imaging.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure US2025036462_04062026_PF_FP_ABST
    Figure US2025036462_04062026_PF_FP_ABST
Patent Text Reader

Abstract

A method is provided for statics correction of seismic data comprising a plurality of traces representing signals recorded by each of a plurality of seismic receivers disposed proximate to an area of Earth's subsurface to be evaluated. The signals are in response to one or more actuations of one or more seismic energy sources. The method includes identifying arrival times of refraction events in each of the plurality of traces. Long wavelength statics components and short wavelength statics components are separated from the arrival times. The separated long wavelength statics components are used as input to a refraction analysis to generate a velocity model of Earth's subsurface.
Need to check novelty before this filing date? Find Prior Art