Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Time-sharing window extraction method and device for full waveform inversion data

A technology of full waveform inversion and extraction method, which is applied in the field of time-division window extraction of full waveform inversion data, can solve problems such as inability to effectively remove noise, difficult convergence of full waveform inversion, and inability to guarantee the accuracy of geological exploration results, etc. Achieve the effect of improving the accuracy of exploration results, improving the accuracy and reliability of results, and removing noise

Active Publication Date: 2021-08-03
PETROCHINA CO LTD
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the surface wave energy is very large and causes secondary strong noise, the existing methods for extracting data for full waveform inversion cannot effectively remove the noise in this area, so it often makes it difficult for the full waveform inversion to converge. The accuracy of geological survey results in the target area cannot be guaranteed

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Time-sharing window extraction method and device for full waveform inversion data
  • Time-sharing window extraction method and device for full waveform inversion data
  • Time-sharing window extraction method and device for full waveform inversion data

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0054] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments It is a part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of this application.

[0055] Considering that when the surface wave energy is very large and causes secondary strong noise, the existing methods for extracting data for full waveform inversion cannot effectively remove the noise in this area, so it often makes it difficult for full waveform inversion to converge Therefore, the accuracy of the geological exploration results in the tar...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The present application provides a method and device for extracting full waveform inversion data in a time-division window, wherein the method includes: acquiring seismic data in the target area; determining the corresponding surface wave arrival at the seismic data detection position according to the corresponding surface wave generated during the earthquake time; apply the time when the surface wave arrives at the detection position of the seismic data, and obtain the upper limit value of the corresponding time window; based on the upper limit value of the time window and the preset time window function, from the seismic data Acquire target data for full waveform inversion. The present application can effectively extract data for full-waveform inversion with a high signal-to-noise ratio from seismic data, thereby effectively improving the accuracy and reliability of the result of full-waveform inversion for a target area.

Description

technical field [0001] The present application relates to the technical field of geological exploration, in particular to a method and device for extracting time-division windows of full waveform inversion data. Background technique [0002] Full waveform inversion technology is one of the cutting-edge technologies in quantitative seismic imaging, which provides a reliable velocity model for high-precision seismic imaging. [0003] Due to the influence of the near-surface environment, data collected on land are often affected by low-frequency noise surface waves. The shape of the surface wave on the seismic shot set is a fan-shaped area with the shot point as the center point. This part of the data is eliminated by filtering in the seismic preprocessing stage. When the surface wave energy is very large and causes secondary strong noise, the existing methods for extracting data for full waveform inversion cannot effectively remove the noise in this area, so it often makes i...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): G01V1/28G01V1/36G01V1/30
CPCG01V1/28G01V1/30G01V1/36
Inventor 宋建勇胡新海曹宏杨志芳徐基祥
Owner PETROCHINA CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com