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:
Mar. 12, 2024
Filed:
Apr. 21, 2020
Petrochina Company Limited, Beijing, CN;
Cnpc Engineering Technology R&d Company Limited, Beijing, CN;
Shuoqiong Liu, Beijing, CN;
Hua Zhang, Beijing, CN;
Jianzhou Jin, Beijing, CN;
Ming Xu, Beijing, CN;
Yongjin Yu, Beijing, CN;
Fengzhong Qi, Beijing, CN;
Congfeng Qu, Beijing, CN;
Hong Yue, Beijing, CN;
Youcheng Zheng, Beijing, CN;
Wei Li, Beijing, CN;
Yong Ma, Beijing, CN;
Youzhi Zheng, Beijing, CN;
Zhao Huang, Beijing, CN;
Jinping Yuan, Beijing, CN;
Zhiwei Ding, Beijing, CN;
Chongfeng Zhou, Beijing, CN;
Chi Zhang, Beijing, CN;
Zishuai Liu, Beijing, CN;
Hongfei Ji, Beijing, CN;
Yuchao Guo, Beijing, CN;
Xiujian Xia, Beijing, CN;
Yong Li, Beijing, CN;
Jiyun Shen, Beijing, CN;
Huiting Liu, Beijing, CN;
Yusi Feng, Beijing, CN;
Bin Lyu, Beijing, CN;
PetroChina Company Limited, Beijing, CN;
CNPC Engineering Technology R&D Company Limited, Beijing, CN;
Abstract
A well cementing method is described for improving cementing quality by controlling the hydration heat of cement slurry. By controlling the degree and/or rate of hydration heat release from cement slurry, the method improves the hydration heat release during formation of cement with curing of cement slurry, improves the binding quality between the cement and the interfaces, and in turn improves the cementing quality at the open hole section and/or the overlap section. The cementing method improves cementing quality of oil and gas wells and reduces the risk of annular pressure.