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

Method and device for determining permeability of reservoir

A method for determining the permeability, which is applied in the fields of permeability/surface area analysis, measuring device, earthwork drilling, etc. It can solve the problem of unreliable calculation results, and achieve the effect of good reliability and obvious practical application effect.

Active Publication Date: 2016-08-24
CHINA UNIV OF PETROLEUM (BEIJING)
View PDF7 Cites 16 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The SDR model mainly uses the geometric mean of the T2 spectrum to reflect the information of the entire T2 spectrum, which has a better calculation effect for water layers, but for oil and gas layers, the calculation results are unreliable

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 device for determining permeability of reservoir
  • Method and device for determining permeability of reservoir
  • Method and device for determining permeability of reservoir

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0054]In order to make the purpose, technical solutions and advantages of the embodiments of the present invention more clear, the embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings. Here, the exemplary embodiments and descriptions of the present invention are used to explain the present invention, but not to limit the present invention.

[0055] In order to obtain accurate reservoir permeability, an embodiment of the present invention provides a method for determining reservoir permeability. figure 1 It is a schematic diagram of a method for determining reservoir permeability in an embodiment of the present invention, such as figure 1 As shown, the method includes:

[0056] Step 101, selecting a reservoir core sample, determining the permeability and nuclear magnetic resonance echo train of the reservoir core sample;

[0057] Step 102, inverting the NMR echo string of the reservoir core sample to obta...

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 device for determining the permeability of a reservoir. The method comprises the following steps of: selecting a rock-core sample of the reservoir and determining the permeability and a nuclear magnetic resonance echo string of the rock-core sample of the reservoir; carrying out inversion on the nuclear magnetic resonance echo string of the rock-core sample of the reservoir to obtain a nuclear magnetic resonance T2 spectrum of the rock-core sample of the reservoir and calculating characteristic parameters of the nuclear magnetic resonance T2 spectrum of the rock-core sample of the reservoir and porosity of the rock-core sample of the reservoir; establishing a multivariate statistical relation of the permeability of the rock-core sample of the reservoir with the characteristic parameters of the nuclear magnetic resonance T2 spectrum of the rock-core sample of the reservoir and the porosity of the rock-core sample of the reservoir; and according to the multivariate statistical relation, the characteristic parameters of the T2 spectrum of the reservoir and the porosity of the reservoir, determining the permeability of the reservoir. The method and device disclosed by the invention is simple, accurate and,reliabl and has obvious actual application effect and provides powerful technical support for oil reservoir classification, productivity prediction and reservoir modeling.

Description

technical field [0001] The invention relates to the technical field of well logging evaluation in oil and gas exploration, in particular to a method and a device for determining reservoir permeability. Background technique [0002] Permeability evaluation is of great significance for reservoir classification, productivity prediction and reservoir modeling. Reservoir permeability is mainly affected by factors such as porosity, irreducible water saturation and pore structure. 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. In conventional reservoirs with medium and high porosity and permeability, the pore structure is relatively simple, and this empirical formula can generally meet the accuracy requirements for reservoir permeability calculation. But this method is not suitable for the calculation of reservoir permeability with c...

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): G01N15/08G01V5/04E21B47/00
CPCE21B47/00G01N15/08G01N15/088G01V5/04
Inventor 谢然红刘秘段野
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