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:
Dec. 19, 2017
Filed:
Dec. 02, 2016
China University of Petroleum (East China), Qingdao, CN;
Zhengsong Qiu, Qingdao, CN;
Xin Zhao, Qingdao, CN;
Hanyi Zhong, Qingdao, CN;
Wei'an Huang, Qingdao, CN;
Yongjun Zhang, Qingdao, CN;
Guowe Zhou, Qingdao, CN;
China University of Petroleum (East China), Shandong, CN;
Abstract
The present invention relates to the technical field of petroleum drilling, specifically provides an encapsulating agent and preparing method thereof, and a drilling fluid, wherein the encapsulating agent comprises an acrylamide monomer structure unit represented by formula (I), an anti-temperature monomer structure unit represented by formula (II) and an cation monomer structure unit represented by formula (III); wherein Rand Rare each independently H, and linear or branched alkyl of C1-C15, and Ris H or the linear or branched alkyl of C1-C5. The drilling fluid provided in the present invention has strong inhibition property and stable rheological property.