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. 03, 2018
Filed:
Aug. 08, 2017
China University of Petroleum (East China), Qingdao, CN;
Research Institute of Petroleum Exploration & Development, Beijing, CN;
Caili Dai, Qingdao, CN;
Mingwei Zhao, Qingdao, CN;
He Liu, Beijing, CN;
Yining Wu, Qingdao, CN;
YOngpeng Sun, Qingdao, CN;
Guang Zhao, Qingdao, CN;
Zhongliang Xu, Qingdao, CN;
China University of Petroleum (East China), Qingdao, CN;
Research Institute of Petroleum Exploration & Development, Beijing, CN;
Abstract
The present invention relates to the field of oil-field chemical reagents, and discloses a polymer, a preparation method of the polymer, and a viscosified acid fluid. The polymer contains structural units represented by formula (1), structural units represented by formula (2), and structural units represented by formula (3), wherein, R-Rand R-Rare H or C1-C4 linear or branched alkyl respectively and independently, Ris C1-C4 linear or branched alkylene, R-Rare C1-C5 linear or branched alkyl respectively and independently, Ris C1-C4 linear or branched alkyl, and n=0-4.