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. 13, 2021
Filed:
Dec. 21, 2018
Petrochina Company Limited, Beijing, CN;
Lijun Mu, Beijing, CN;
Xianwen Li, Beijing, CN;
Hongjun Lu, Beijing, CN;
Yong Wang, Beijing, CN;
Bin Yao, Beijing, CN;
Zhenning Ji, Beijing, CN;
Suiwang Zhang, Beijing, CN;
Xiaobing Lu, Beijing, CN;
Zhaojie Song, Beijing, CN;
Lei Sui, Beijing, CN;
Zhiying Deng, Beijing, CN;
Erzhen Wang, Beijing, CN;
Wei Wang, Beijing, CN;
Juntao Wang, Beijing, CN;
Abstract
An injection stimulation agent for water injection well and the preparation method and application thereof are described. The raw material composition of the injection stimulation agent for water injection well comprises: 5.0%-10.0% of sulfamic acid, 10.0%-20.0% of methanol, 10.0%-20.0% of tartaric acid, 10.0%-20.0% of ethylenediamine tetramethylene phosphoric acid, 5.0%-10.0% of sodium polyacrylate, 5.0%-8.0% of cocoyl hydroxyethyl sulfonic acid and the balance of water. Embodiments include a preparation method of the above injection stimulation agent. The injection stimulation agent for water injection well can be used in acidizing treatment process of the reservoir, and can be used directly. The injection stimulation agent can play the role of shrinking swelled clay at the same time of dissolving scale, and finally achieve the purpose of depressurization and enhanced production.