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. 29, 2020
Filed:
Jan. 23, 2019
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;
Zhiying Deng, Beijing, CN;
Lei SUi, Beijing, CN;
Erzhen Wang, Beijing, CN;
Zhaojie Song, Beijing, CN;
PetroChina Company Limited, Beijing, CN;
Abstract
A chelating agent may be used for reservoir acidification and stimulating injection. The raw material composition of the chelating agent comprises: 10.0%-20.0% of methanesulfonic acid, 10.0%-20.0% of methanol, 10.0%-20.0% of polyaspartic acid, 10.0%-15.0% of epoxy succinic acid, 5.0%-10.0% of sodium cetyl sulfonate, 10.0%-15.0% of cetyltrimethylammonium bromide and the balance of water. The present disclosure also provides a preparation method of the above chelating agent. The chelating agent for reservoir acidification and stimulating injection may be used in an acidizing and stimulating injection process, wherein it can effectively dissolve rock cracks, be used directly without need to be reversed.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile