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

Method, device and equipment for determining reservoir permeability based on nuclear magnetic resonance data

A nuclear magnetic resonance and data determination technology, applied in the field of oil and gas exploration, can solve problems such as inapplicability

Active Publication Date: 2021-09-10
CHINA UNIV OF PETROLEUM (BEIJING)
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Commonly used models for obtaining reservoir permeability based on NMR logging are the Coates model and the SDR model, but a large number of core experiment data show that they are not suitable for reservoirs with complex pore structures

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, device and equipment for determining reservoir permeability based on nuclear magnetic resonance data
  • Method, device and equipment for determining reservoir permeability based on nuclear magnetic resonance data
  • Method, device and equipment for determining reservoir permeability based on nuclear magnetic resonance data

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 this specification, the technical solutions in the embodiments of this specification will be clearly and completely described below in conjunction with the drawings in the embodiments of this specification. Obviously, the described The embodiments are only some of the embodiments in this specification, not all of the embodiments. Based on the implementations in this specification, all other implementations obtained by persons of ordinary skill in the art without creative efforts shall fall within the protection scope of this specification.

[0065] The existing schemes for determining reservoir permeability do not consider the heterogeneity of reservoir space. Therefore, the accuracy of reservoir permeability evaluation for tight oil and gas and unconventional oil and gas needs to be improved. In fact, the pore structure of unconventional oil and gas reservoirs is complex, and it...

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 specification provide a method, device, and device for determining reservoir permeability based on nuclear magnetic resonance data, the method comprising: acquiring permeability, porosity, and nuclear magnetic resonance echo trains of reservoir rock samples; Inverting the resonant echo train to obtain the nuclear magnetic resonance T2 distribution of the reservoir rock sample; determining the single fractal dimension feature and multifractal dimension feature of the nuclear magnetic resonance T2 distribution; according to the single fractal dimension feature, The multifractal dimension feature, the porosity and the permeability generate a reservoir permeability prediction model; the reservoir permeability of the work area corresponding to the reservoir rock sample is predicted according to the reservoir permeability prediction model. The embodiments of the present specification can improve the permeability prediction accuracy of complex pore structure reservoirs.

Description

technical field [0001] This description relates to the technical field of oil and gas exploration, in particular to a method, device and equipment for determining reservoir permeability based on nuclear magnetic resonance data. Background technique [0002] Permeability is an important parameter reflecting the seepage ability of reservoir fluid in rock pores. Permeability evaluation is of great significance for reservoir classification, productivity prediction and reservoir modeling. [0003] At present, the regional empirical formula for calculating permeability is usually established by using the statistical relationship of parameters such as core analysis permeability and porosity. However, this method is not suitable for the calculation of the permeability of reservoirs with complex pore structures (such as ultra-low permeability reservoirs, etc.). NMR logging can obtain information such as reservoir porosity and pore size distribution, and has unique advantages in eva...

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): G01N24/08G01N15/08
CPCG01N15/08G01N15/088G01N24/081
Inventor 谢然红刘秘
Owner CHINA UNIV OF PETROLEUM (BEIJING)
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