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:
Jan. 12, 2021
Filed:
Oct. 30, 2018
Petrochina Company Limited, Beijing, CN;
Lingzhi Yang, Beijing, CN;
Yafeng Ju, Beijing, CN;
Bin Yao, Beijing, CN;
Jiuzheng Yu, Beijing, CN;
Bilin Luo, Beijing, CN;
Fuwei Bi, Beijing, CN;
Zijian Wang, Beijing, CN;
Yanqing Liu, Beijing, CN;
PETROCHINA COMPANY LIMITED, Beijing, CN;
Abstract
A layered water injection system and a layered water injection method. The system comprises: a ground water injection valve group configured with an intelligent control valve, for receiving a water injection control instruction sent by a remote control center, and for converting the water injection control instruction into a switching action of the intelligent control valve to control water flow pressure fluctuation in a water injection string, so as to form a first pressure wave code in the water injection string; a water distributor for collecting the first pressure wave code, interpreting the first pressure wave code as a corresponding water outlet switch instruction, and performing layered water injection control according to the water outlet switch instruction. The embodiments of the application can improve the automation level of layered water injection and the reliability of layered water injection control.