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

A Motion Correction Method for Fine Traveltime Calculation

A technology of dynamic correction and travel time, applied in the field of seismic data processing and interpretation in petroleum seismic exploration, can solve problems affecting imaging quality, uneven seismic waves, inaccurate calculation of dynamic correction, etc., to improve imaging quality, realize in-phase stacking, The effect of accurate motion correction amount

Active Publication Date: 2020-02-07
BC P INC CHINA NAT PETROLEUM CORP +1
View PDF10 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in actual production and application in complex areas, the uneven velocity of the underground medium, longitudinal and lateral changes will cause uneven travel time of seismic wave propagation, which will lead to inaccurate calculation of dynamic correction, making it impossible for the same common center point gathers to be superimposed in phase. ultimately affect image quality

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
  • A Motion Correction Method for Fine Traveltime Calculation
  • A Motion Correction Method for Fine Traveltime Calculation
  • A Motion Correction Method for Fine Traveltime Calculation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0011] Hereinafter, the motion correction method for fine travel time calculation of the present invention will be described in detail with reference to exemplary embodiments and accompanying drawings.

[0012] In the conventional data processing of petroleum seismic exploration, it is usually assumed that the underground medium is horizontally layered, and the velocity in the layer is horizontally constant or changes slowly. Therefore, in the same common center point gather, the travel time calculation formula used for dynamic correction is the formula 1:

[0013]

[0014] Among them, t is the travel time corresponding to the offset x, and t 0 is the self-excitation and self-retraction time, x is the offset distance, and v is the root mean square velocity.

[0015] In the actual production and application in complex areas, the unevenness of the velocity of the underground medium, the longitudinal and lateral changes will cause the unevenness of the travel time of the seis...

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 dynamic correction method for fine travel time calculation. The dynamic correction method includes the steps of A, for any sampling point in seismic data, acquiring a shot point root mean square (RMS) velocity vS and a detection point RMS velocity vR; B, calculating the travel time t of dynamic correction according to Equation 1, and performing dynamic correction, the Equation 1 being shown in the description, where t0 is the self-excitation and self-reception time from a shot point to a detection point, xS is the offset of the shot point, and xR is the offset of the detection point; and C, repeating the steps A and B until all the sampling points in the seismic data are processed. The method of the invention is applicable to the processing of the seismic data withcomplex underground conditions, and can obtain more accurate RMS velocity and dynamic correction amount, realize in-phase superposition, and ultimately improve imaging quality.

Description

technical field [0001] The invention belongs to the field of petroleum and natural gas seismic exploration investigation, and more specifically relates to a seismic data processing and interpretation method for petroleum seismic exploration. Background technique [0002] In the conventional data processing of petroleum seismic exploration, it is usually assumed that the underground medium is horizontally layered, and the velocity in the layer is horizontally constant or changes slowly. However, in actual production and application in complex areas, the uneven velocity of the underground medium, longitudinal and lateral changes will cause uneven travel time of seismic wave propagation, which will lead to inaccurate calculation of dynamic correction, making it impossible for the same common center point gathers to be superimposed in phase. Ultimately affect image quality. Contents of the invention [0003] In view of the problems existing in the prior art, the purpose of th...

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): G01V1/30G01V1/36
CPCG01V1/308G01V1/362G01V2210/52G01V2210/612G01V2210/74
Inventor 罗红明何光明杨海涛金德刚张新华张恩嘉陈爱萍邱月刘鸿
Owner BC P INC CHINA NAT PETROLEUM CORP
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