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

Method for calculating reservoir permeability based on seismic profile quality factor

A technique of seismic section and quality factor, applied in permeability/surface area analysis, seismology for logging records, seismic signal processing, etc., can solve the problems of large error and inaccuracy, and achieve high accuracy and high permeability objective effect

Active Publication Date: 2018-01-16
CHINA NAT PETROLEUM CORP CHUANQING DRILLING ENG CO LTD
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The invention can establish multiple models at the same time, and overcomes the inaccurate and large error problems existing in the existing method of directly and simply converting the porosity calculated from the seismic section into the permeability

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 for calculating reservoir permeability based on seismic profile quality factor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A method for calculating reservoir permeability based on seismic profile quality factors, comprising: establishing one or more mathematical relationships between drilled permeability parameters and seismic profile quality factors; applying the mathematical relationships to seismic wave data at places without drilling According to the similarity between the seismic wave data at the place without drilling and the seismic wave data used to establish the mathematical relationship, the reservoir type is determined, and the permeability at this place is calculated by selecting the corresponding mathematical relationship according to the reservoir type.

[0032] Described method specifically comprises the steps:

[0033] (1) Collect the core permeability parameters of the specified reservoir section that has been drilled in the area or geological structure, and calculate the average value;

[0034] (2) Using seismic data to extract quality factor Q data volume;

[0035] (3) D...

Embodiment 2

[0049] The present invention utilizes that there is such a correlation between the Q factor and the permeability, and because the types of reservoir pores or fractures are different, in the same oil and gas area, the relationship between the permeability and the Q factor will also be different, therefore, according to the actual situation, establish Different models, in the prediction, first determine the reservoir type according to certain rules, and then select the corresponding model to predict the permeability.

[0050] The present invention will be further described below in conjunction with the accompanying drawings. figure 1 Among them, the horizontal axis—average Q factor (dimensionless); the vertical axis—permeability (millidarcy).

[0051] Described method specifically comprises the steps:

[0052] (1) Collect the core permeability parameters of the specified reservoir section that has been drilled in the area or geological structure, and calculate the average value...

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 for calculating reservoir permeability based on a seismic profile quality factor. The method comprises the steps of establishing one or a plurality of mathematical relations between permeability parameters of drilled wells and a seismic profile quality factor in a classified manner; applying the mathematical relation on the seismic wave data without the drilled well, determining the type of the reservoir according to similarity between the seismic wave data without the drilled well and the seismic wave data used for establishing the mathematical relation, and selecting the corresponding mathematical relation through the reservoir type for calculating the permeability at a certain position. According to the method of the invention, a plurality of models canbe simultaneously established, thereby overcoming problems of low accuracy and large error in an existing method in which the porosity calculated according to the seismic profile is directly and simply converted to permeability.

Description

technical field [0001] The invention relates to a method for calculating reservoir permeability based on seismic profile quality factors, and belongs to the field of seismic profile reservoir prediction for oil and gas field exploration and development. Background technique [0002] Reservoir permeability is one of the most important parameters to determine the effect of oil and gas development. Around this topic, predecessors have carried out a lot of theoretical and experimental research on the calculation of permeability. In the aspect of using seismic section to predict reservoir permeability, in the past, the permeability and porosity obtained by core analysis were basically used to establish the porosity-permeability relationship, and then the porosity calculated by seismic section was converted into permeability through this relationship. method has been applied in production. However, the control factors of porosity and permeability are different, and the relations...

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): G01V1/50G01N15/08
Inventor 吴宗蔚郭思陈虹
Owner CHINA NAT PETROLEUM CORP CHUANQING DRILLING ENG CO LTD
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