Method for separating variable offset vertical seismic profile (VSP) wave fields

A technology of variable offset distance and wave field separation, which is applied in the field of seismic exploration data processing, and can solve the problem that it is difficult to separate the two

Inactive Publication Date: 2013-06-12
TIANJIN URBAN CONSTR COLLEGE
View PDF3 Cites 16 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For the upgoing wave, it is buried in the downgoing wave field. In the field of dynamics and kinematics, except for the difference in arrival time, the apparent velocity and spectrum rang

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
  • Method for separating variable offset vertical seismic profile (VSP) wave fields
  • Method for separating variable offset vertical seismic profile (VSP) wave fields
  • Method for separating variable offset vertical seismic profile (VSP) wave fields

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0129] Effective separation of up-going waves and down-going waves is a basic task of VSP data processing. Only by correctly identifying, separating and extracting up-going waves and down-going waves can the useful information of VSP be fully utilized to supplement the insufficiency of ground exploration and contribute to structural exploration, Lithology exploration and oil and gas development services. The main basis for separating the upgoing and downgoing waves recorded by the VSP is the difference in their apparent velocities.

[0130] Discrete Radon transform is an improvement in the early stage of seismic exploration when linear Radon transform is the main method. Parabolic Radon transform has obvious effects on suppressing linear interference waves, multiple waves, and separating longitudinal and transverse waves. But because the reflected wave event of seismic data is mostly a hyperbola, it becomes an ellipse in the transform domain. Although the difference in velocit...

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 provides a method for separating variable offset vertical seismic profile (VSP) wave fields. The method comprises the following steps of: inputting the collected original seismic wave field data of the variable offset VSP in a computer; performing t2 stretching treatment on the original seismic wave field data to form t2 stretching processing data; performing discrete positive parabolic radon transformation on the t2 stretching processing data to form tau-q domain up-going wave separation data and tau-q domain down-going wave separation data; performing discrete reverse parabolic radon transformation on the tau-q domain up-going wave separation data and the tau-q domain down-going wave separation data to form x-t2 domain data; and performing reverse t2 stretching treatment on the x-t2 domain data to separate the up-going wave and down-going wave of the variable offset VSP.

Description

technical field [0001] The invention relates to a seismic exploration data processing technology, in particular to a method for separating upgoing waves and downgoing waves of a variable-offset VSP wave field. Background technique [0002] Vertical Seismic Profiling (Vertical Seismic Profiling) is an observation method that is opposite to the seismic profile observed on the ground. The seismic section of ground observation is excited at some points near the surface, and at the same time, geophones are arranged along the ground for observation; the vertical seismic section also excites seismic waves at some points near the surface, but it is arranged at different depths along the borehole These detectors are all three-component, and what they receive is the vector of particle vibration. The vertical seismic section is actually the transformation and development of the widely used seismic logging method. It has now gone far beyond the original scope of seismic logging, and h...

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): G01V1/28
Inventor 胡建平戴华林苑伯达高树成陈亚东王丽
Owner TIANJIN URBAN CONSTR COLLEGE
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap