A method and device for picking up first arrival waves

A standard deviation, sampling point technology, applied in the field of geophysical exploration data processing, can solve the problem of reducing the accuracy of first arrival wave picking

Active Publication Date: 2017-10-17
BC P INC CHINA NAT PETROLEUM CORP +1
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This leads to the fact that when the method of boundary energy detection in the prior art picks up the first wave from the seismic data with a large amount of data and low signal-to-noise ratio, the seismic data itself has a large amount of energy interference information, such as the subsequent wave, etc.
Thereby reducing the accuracy of first arrival wave picking

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 method and device for picking up first arrival waves
  • A method and device for picking up first arrival waves
  • A method and device for picking up first arrival waves

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0064] In order to enable those skilled in the art to better understand the technical solutions in the present application, 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 The embodiments are only some of the embodiments of the present application, but 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 shall fall within the scope of protection of this application.

[0065] The specific implementation of the embodiment of the present application will be described in detail below with several specific examples.

[0066] The first embodiment of a method of the present application is firstly introduced below. figure 1 It is a flow chart of an embodiment of a method for picking up first-arrival waves in ...

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

Embodiments of the present application provide a method and device for picking up first arrival waves. The method includes performing convolution transformation on the collected seismic data to obtain the convolved seismic data; using the collected seismic data and the convoluted seismic data to calculate and obtain the envelope of sampling points in the seismic trace; according to the The envelope of the reference sampling point at the preset position of the sampling point in the seismic trace determines the instantaneous amplitude of the sampling point in the seismic trace; the energy ratio of the sampling point in the seismic trace is calculated by using the instantaneous amplitude of the sampling point in the seismic trace and the preset energy ratio formula; Calculate the difference between the energy ratio of the sampling point in the seismic trace and the energy ratio of a sampling point after the sampling point; compare the absolute value of the difference; use the sampling point corresponding to the largest absolute value as the initial value of the seismic trace The sample point of the wave. Using the technical solution provided by the embodiment of the present application can greatly improve the accuracy of picking up the first wave.

Description

technical field [0001] The invention relates to the technical field of geophysical prospecting data processing, in particular to a method and device for picking up first arrival waves. Background technique [0002] The static correction processing technology in seismic exploration can be used to solve the problem that the change of seismic wave travel time in the near-surface medium affects the reflection wave stacking imaging. In static correction processing technology, first arrival is an important attribute of seismic data. In the process of seismic data processing, usually the attribute of first arrival can be used to solve the problem of static correction of seismic data. When an earthquake occurs, due to the different propagation speeds of various seismic waves, the time of propagation to the observation point is also sequential. The first wave received by the seismic observation point can be called the first arrival wave. [0003] The methods for picking up the fir...

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): G01V1/28
Inventor 许银坡杨海申邹雪峰唐东磊何永清徐丽军
Owner BC P INC CHINA NAT PETROLEUM CORP
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