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

Method and system for shallow, medium and deep joint tomography inversion velocity modeling in depth domain

A tomographic inversion and velocity modeling technology, applied in the field of petroleum geophysical exploration, can solve the problems of tomography combined with tomographic modeling without imaging domain, and achieve the goal of improving migration profile quality, simple algorithm and high computational efficiency. Effect

Active Publication Date: 2019-04-19
CHINA PETROLEUM & CHEM CORP +1
View PDF6 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, the joint tomography mentioned above is performed in the data domain, and does not carry out joint tomographic modeling on the first arrival travel time and the imaging domain tomography widely used in the industry.

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 shallow, medium and deep joint tomography inversion velocity modeling in depth domain
  • Method and system for shallow, medium and deep joint tomography inversion velocity modeling in depth domain
  • Method and system for shallow, medium and deep joint tomography inversion velocity modeling in depth domain

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0055] Preferred embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although preferred embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

[0056] The purpose of the present invention is to solve the problem of separation and fusion of velocity modeling in the shallow layer and the middle-deep layer in the prior art. Under the framework of travel-time tomographic inversion based on ray theory, the first-arrival travel of the transmitted wave Combined tomographic inversion with the remaining depth difference of time and imaging gathers, and weighted combination by weighting facto...

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 and system for shallow, medium and deep joint tomography inversion velocity modeling in depth domain. The method comprises the steps that an initial arrival tomographymatrix is established based on an initial velocity model; an imaging gather reflection tomography matrix is established based on the initial velocity model; joint tomography target functional constructing is carried out based on the first arrival tomography matrix and the imaging gather reflection tomography matrix; joint tomography target functional solving is carried out to acquire a velocity update amount, and the initial velocity model is updated; and initial arrival tomography matrix calculating and imaging gather reflection tomography matrix calculating are carried out based on the updated velocity model, and then joint tomography inversion is carried out. According to the method provided by the invention, the inversion accuracy of the entire velocity model is improved; the offset profile quality is improved; and a model test proves that the technology has the advantages of obvious effect, high calculation efficiency and practical application value.

Description

technical field [0001] The invention belongs to the field of petroleum geophysical exploration, and relates to shallow-middle-deep layer velocity inversion and modeling in the depth domain in seismic exploration, in particular to a shallow-middle-deep layer joint tomographic inversion velocity modeling method and system in the depth domain, which can be applied to Seismic data processing. Background technique [0002] Tomographic velocity modeling based on reflected wave information can be realized in two ways, one is reflection tomography in the data domain and reflection tomography in the imaging domain. The reflection tomography in the imaging domain is based on the residual depth difference of the reflection wave imaging gather, also known as tomographic migration velocity analysis. First, the position and inclination information of the reflection surface is extracted from the imaging profile, and the data residual information is extracted from the imaging gather. , and...

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 Applications(China)
IPC IPC(8): G01V1/28G01V1/30
CPCG01V1/282G01V1/303
Inventor 张兵
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