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

Ray chromatography imaging method for refracted waves

A technology of ray tomography and imaging method, applied in the field of imaging, to achieve the effect of simple imaging steps, good imaging effect and high utilization value

Inactive Publication Date: 2011-06-15
武侯区巅峰机电科技研发中心
View PDF0 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in practical applications, there are still some difficulties and problems in wave equation tomography, such as the extraction of scattering data, the elimination of various interference factors that seriously affect the waveform (source signal, dielectric absorption, ground coupling of the geophone), etc.

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
  • Ray chromatography imaging method for refracted waves
  • Ray chromatography imaging method for refracted waves

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0022] The present invention will be further described below.

[0023] Refracted wave ray tomography method, is characterized in that, comprises the following steps:

[0024] (1) Data acquisition - picking up the earthquake travel time t m

[0025] Pick up the seismic travel time t recorded by each source-receiver m This step takes more time because the interpretation of the prestack seismic data is essentially involved when picking up the trip. Manual picking is slow and the data quality is good, while automatic picking is fast, but it is prone to errors and affects the tomographic results, so manual correction is required.

[0026] (2) Establish a speed model

[0027] After the velocity model is established, forward calculation is performed on the model, and ray tracing technology is generally used to calculate the ray path and travel time t c .

[0028] (3) Establish a linear equation for travel time inversion

[0029] Its linear equation is as follows:

[0030] Con...

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 invention discloses a ray chromatography imaging method for refracted waves, belongs to a ray imaging technology, and mainly solves the problem of ray imaging of a refracting layer in an earthquake. The ray chromatography imaging method for the refracted waves comprises the following steps of: (1) performing data acquisition, namely acquiring earthquake travel time tm; (2) establishing a velocity model; (3) establishing a linear equation of inversion of the travel time; (4) solving a velocity increment according to the travel time inversion equation; and (5) modifying the velocity model by using the solved velocity increment, solving a new velocity increment according to a new travel time inversion equation, modifying the currently used velocity model by using the new velocity increment, and repeatedly modifying until the solved velocity increment meets an inversion norm, namely the ray chromatography imaging of the refracted waves is achieved at the moment. The method is simple, easy to operate, and high in imaging quality and efficiency.

Description

technical field [0001] The invention relates to an imaging method, in particular to a refracted wave ray tomography imaging method. Background technique [0002] Seismic tomography is a new geophysical exploration method developed in the 1980s. It reconstructs the medium velocity structure underground or between wells through the travel time or waveform of seismic waves observed on the surface or between wells, so as to reveal its geological structure, lithology distribution or mineral deposit form. Dines and Lytle were the first to introduce tomography into the field of geophysics. Subsequently, McMechen, Daily, Somerstein, etc. conducted extensive research on the theory and methods of seismic tomography. Since the 1990s, seismic tomography has been practically applied. In seismic exploration, it is a very important problem to estimate the propagation velocity of waves in the subsurface medium, and tomography provides a practical method for solving the velocity estimatio...

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
IPC IPC(8): G01V1/28G01V1/36
Inventor 黄友华
Owner 武侯区巅峰机电科技研发中心
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