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:
Jul. 14, 2026
Filed:
Oct. 16, 2025
China University of Petroleum(east China), Qingdao City, CN;
Zengbao Wang, Qingdao City, CN;
Weian Huang, Qingdao City, CN;
Yuwei Gan, Qingdao City, CN;
Yingrui Bai, Qingdao City, CN;
Yongping Zhan, Qingdao City, CN;
Junjie Jiang, Qingdao City, CN;
CHINA UNIVERSITY OF PETROLEUM(EAST CHINA), Qingdao City, CN;
Abstract
A fracturing fluid pad fluid is applicable to a calcium-rich reservoir and composed of clear water, phosphate, pH regulator and Cachelator, wherein, for 100 weight parts of clear water, the content of the phosphate is 1 to 10 weight parts, the volume molar concentration of the pH regulator is 1 to 5 mol/L, and the volume molar concentration of the Cachelator is 0.001 to 1 mol/L; the pH regulator is urea, ammonia water, propanamide and the like, and the Cachelator is EDTA and glutamic acid and the like. The present disclosure increases the average particle size of the proppant particles generated by hydrothermal reaction of formation minerals, thereby improving its propping effect in the formation micro-fractures.