Check patentability & draft patents in minutes with Patsnap Eureka AI!

Method and system for generating seismic data super gather for speed analysis

A technology of seismic data and velocity analysis, applied in the field of petroleum seismic exploration data processing, can solve the problem of low coverage times, achieve the effects of increasing coverage times, improving picking accuracy, and improving user experience

Inactive Publication Date: 2019-04-19
CHINA PETROLEUM & CHEM CORP +1
View PDF9 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problem of low coverage times and signal-to-noise ratio of central point gathers in seismic data processing, adopt offset grouping strategy, and generate super-gathers by superimposing adjacent gathers to increase coverage times and improve signal-to-noise ratio Ratio, making the generated spectrum data energy group more focused, improving the speed analysis picking accuracy

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 and system for generating seismic data super gather for speed analysis
  • Method and system for generating seismic data super gather for speed analysis
  • Method and system for generating seismic data super gather for speed analysis

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0033] figure 1 A flow chart of the method for generating seismic data super gathers for velocity analysis of the present invention is shown.

[0034] like figure 1 As shown, one aspect of the present invention provides a seismic data super-gather generation method for velocity analysis, the seismic data super-gather generation method includes: Step 101, defining adjacent common center point gathers participating in stacking, Obtain track data; step 102, obtain offset grouping parameters; step 103, group based on the offset grouping parameters, and count the total number of tracks in each group; step 104, horizontally superimpose each group of sample point data is one piece of sample point data; Step 105, based on the one piece of sample point data of each group, obtain a super-gather set.

[0035] The invention adopts an offset grouping strategy, and generates a super-gather by stacking adjacent gathers to increase the number of coverages and improve the signal-to-noise rat...

application example 1

[0055] The technical scheme of the present invention is applied to the velocity analysis module of the Sinopec π-Frame platform, and supergathers are generated through the superposition of adjacent gathers. The number of coverages of the common center point gather is effectively improved, the generated velocity spectrum energy group is more focused, the manual picking velocity pair is more accurate, the user experience is good, and the interaction is convenient.

application example 2

[0057] figure 2 It shows a three-dimensional network survey diagram of a seismic data super gather generation method for velocity analysis of an application example of the present invention; wherein, the dots in the figure are common center points.

[0058] image 3 It shows a two-dimensional network survey diagram of a seismic data super gather generation method for velocity analysis of an application example of the present invention; wherein, the dots in the figure are common center points.

[0059] The technical scheme of the invention is used for two-dimensional surveying network and three-dimensional surveying network.

[0060] like figure 2 As shown, for the three-dimensional survey network, the range of 5x5 is usually selected to be merged into a super gather, and all the trace data of a total of 25 cmp points around the common center point are arranged according to the size of the offset;

[0061] offset(n)=offsetStart+n*offsetTolerance (1)

[0062] offset(n)-offse...

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 method and system for generating a seismic data super gather for speed analysis. The seismic data super gather generation method comprises the steps that adjacent co-center point gathers participating in superposition are defined, and track data are acquired; offset distance grouping parameters are acquired; grouping is carried out based on the offset distance grouping parameters, and the total number of tracks of each group is counted; each group of sample data are horizontally superimposed into a track sampling point datum; and based on the track sampling point datum of each group, the super gather is acquired. According to the technical scheme provided by the invention, an offset grouping policy is mainly adopted; adjacent gathers are superimposed to generate the super gather to improve the number of coverages and improve the signal-to-noise ratio; a generated spectral data energy group is more focused; the picking accuracy of a speed analysis speed pair isimproved; and the user experience of a processor is improved.

Description

technical field [0001] The invention belongs to the technical field of petroleum seismic exploration data processing, and more specifically relates to a seismic data super-gather generation method and system for velocity analysis. Background technique [0002] Seismic data processing has higher and higher requirements for the accuracy of velocity analysis. At present, the conventional velocity analysis method mainly adopts the post-stack energy maximum discrimination method. The noise ratio is low without targeted optimization processing. Usually, when the velocity spectrum is generated, the data of a single common center point is directly used for calculation, so that the velocity energy is not focused, and the velocity accuracy of the middle and deep layers is not enough, which affects the imaging accuracy of seismic waves. Contents of the invention [0003] The purpose of the present invention is to solve the problem of low coverage times and signal-to-noise ratio of ce...

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): G01V1/30G01V1/28
CPCG01V1/28G01V1/303
Inventor 杨文广王小青许自龙宋志翔
Owner CHINA PETROLEUM & CHEM CORP
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com