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

Gas-bearing property detection method based on nonlinear inversion of pore medium asymptotic equation

A detection method and technology of porous media, which is applied in the exploration and development of natural gas and petroleum fields, and can solve the problems of limited applicable occasions of detection methods

Inactive Publication Date: 2018-03-06
CHINA PETROLEUM & CHEM CORP +1
View PDF4 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the problem that the existing detection methods are limited in applicable occasions, and provide a gas-bearing detection method based on the nonlinear inversion of the asymptotic equation of porous media

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
  • Gas-bearing property detection method based on nonlinear inversion of pore medium asymptotic equation
  • Gas-bearing property detection method based on nonlinear inversion of pore medium asymptotic equation
  • Gas-bearing property detection method based on nonlinear inversion of pore medium asymptotic equation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0022] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. However, it should not be understood that the scope of the above subject matter of the present invention is limited to the following embodiments, and all technologies realized based on the content of the present invention belong to the scope of the present invention.

[0023] The invention belongs to a seismic signal processing method in the field of petroleum geophysical exploration. Firstly, through the theoretical research on the asymptotic equation of the normal direction of the porous medium, the asymptotic equation represents the fluidity parameter analysis, and introduces it into the seismic exploration. Then, forward modeling and analysis are performed using the asymptotic expression and petrophysical data. Finally, the detection of gas-bearing properties based on the nonlinear inversion of the asymptotic equation of porous medi...

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 relates to the field of petroleum and natural gas exploration and development, in particular to a gas-bearing property detection method based on nonlinear inversion of a pore medium asymptotic equation. The method comprises the following steps: initiating an application method for extracting a gas-bearing property indication based on an inversion method, carrying out forward modelingresearch from logging petrophysical data, observing a phenomenon that the amplitude changes with the frequency through a model, and analyzing the phenomenon. Finally, an objective function is established in a frequency domain by using a normal asymptotic equation, and the gas-bearing property inversion based on a normal reflection coefficient of a porous medium is realized by using a nonlinear chaos method. The model studied in the invention combines a Barenblatt model and a Biot elastic pore theory, however, the application of the model is not limited to fractured reservoirs, but is applicable to situations where two or more scales exist in rocks.

Description

technical field [0001] The invention relates to the field of petroleum and natural gas exploration and development, in particular to a gas-bearing property detection method based on the nonlinear inversion of the asymptotic equation of the porous medium. Background technique [0002] Low-frequency seismic anomalies associated with oil and gas reservoirs have been recognized by geophysicists for many years, and the topic continues to garner attention today. Although people do not fully understand the mechanism that causes frequency-related amplitude anomalies, it has been widely recognized that oil and gas reservoirs often exhibit abnormally high energy attenuation, and the energy attenuation is related to velocity dispersion. In oil and gas reservoirs with very high energy attenuation, obvious velocity dispersion can often be seen, and strong energy attenuation and velocity dispersion in the seismic frequency band have also been observed in the laboratory. [0003] Like oth...

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): G01N13/00G01V1/40
CPCG01N13/00G01V1/40
Inventor 许多吴清杰姜镭段文燊马如辉魏艳郑公营王玲
Owner CHINA PETROLEUM & CHEM 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