The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 05, 2023
Filed:
Nov. 03, 2020
Southwest Petroleum University, Chengdu, CN;
Yonggang Duan, Chengdu, CN;
Zhenglan Li, Chengdu, CN;
Quantang Fang, Chengdu, CN;
Mingqiang Wei, Chengdu, CN;
Yu Peng, Chengdu, CN;
Shihao Wei, Chengdu, CN;
Zijian Wu, Chengdu, CN;
Shuyao Sheng, Chengdu, CN;
SOUTHWEST PETROLEUM UNIVERSITY, Chengdu, CN;
Abstract
The invention discloses a digital imaging technology-based method for calculating relative permeability of tight core, comprising the following steps: step S: preparing a small column sample of tight core satisfying resolution requirements; step S: scanning the sample by MicroCT-400 and establish a digital core; step S: performing statistical analysis on parameters reflecting the characteristics of rock pore structure and shape according to the digital core; step S: calculating tortuosity fractal dimension DT and porosity fractal dimension Df by a 3D image fractal box dimension algorithm; step S: performing statistical analysis on maximum pore equivalent diameter λmax and minimum pore equivalent diameter λmin by a label. The present invention solves the problems of time consumption of experiment, instrument accuracy, incapability of repeated calculation simulations and resource waste by repeated physical experiment.