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:
Apr. 27, 2021
Filed:
Apr. 09, 2020
Southwest Petroleum University, Sichuan, CN;
Yang Bai, Sichuan, CN;
Yan Cheng, Sichuan, CN;
Pingya Luo, Sichuan, CN;
Hongbo Li, Sichuan, CN;
Cheng Li, Sichuan, CN;
Hao Zhang, Sichuan, CN;
Guojun Li, Sichuan, CN;
Dezhi Liu, Sichuan, CN;
Chunyan Liu, Sichuan, CN;
Southwest Petroleum University, Sichuan, CN;
Abstract
The invention discloses a method and system for obtaining an evaluation model and an evaluation method and system for the plugging performance of drilling fluid. The method for obtaining the evaluation model comprises: applying a confining pressure to a holding device where a preset fracture model is located, wherein a displacement differential pressure of two ends of the holding device is a preset displacement differential pressure; measuring a flow of standard measuring fluid flowing through the preset fracture model under different confining pressures, wherein the different confining pressures gradually increase according to a first preset rule; and controlling to stop increasing the confining pressure when the flow of the standard measuring fluid flowing through the preset fracture model reaches a preset flow so as to compress the preset fracture model into the evaluation model at a micro-nano level.