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:
Nov. 02, 2021
Filed:
Apr. 14, 2020
Southwest Petroleum University, Chengdu, CN;
Gao Li, Chengdu, CN;
Long He, Chengdu, CN;
Zujun Jiang, Chengdu, CN;
Rui Li, Chengdu, CN;
Yi Feng, Chengdu, CN;
SOUTHWEST PETROLEUM UNIVERSITY, Chengdu, CN;
Abstract
A multi-slug staged method for plugging a fractured formation includes: determining an average opening of fractures around a well as D, an average particle size of bridging particles for first-stage plugging as Dthat is slightly less than D, and average particle sizes of plugging particles for second to last-stage plugging as D-D, where Dis small enough to form a tight plugging layer; and sequentially injecting a plugging slurry only containing the bridging particles having the average particle size of D, plugging slurries containing the plugging particles having the average particle sizes of D-D, and a plugging slurry containing the plugging particles having the average particle size of Dinto the fractures to achieve the fractured formation plugging.