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61 inventors (with patents filed for the assignee):

Lei Li (4 out of 5 patents)

Jing Bai (3 out of 3 patents)

Chongjun Huang (3 out of 3 patents)

4. Jichuan Zhang (3 out of 3 patents)

5. Dengyun Lu (3 out of 3 patents)

6. Lichun Jia (3 out of 3 patents)

7. Xiaobo Liu (2 out of 25 patents)

8. Yong Wang (2 out of 61 patents)

9. Li Li Zhao (2 out of 48 patents)

10. Guancheng Jiang (2 out of 45 patents)

11. Lili Yang (2 out of 27 patents)

12. Yinbo He (2 out of 27 patents)

13. Tengfei Dong (2 out of 10 patents)

14. Chunyao Peng (2 out of 13 patents)

15. Xuwu Luo (2 out of 8 patents)

7 patents: Sort by Forward Citations

1. 12199448 - System and method for dynamically adjusting coupling coefficients of non-contact transmission magnetic mechanism (2025-01-14),

2. 11982146 - Jet flow adjustment method for rotary steerable downhole release (2024-05-14),

3. 11946350 - Method for remotely shutting down downhole unit of rotary steering system from ground (2024-04-02),

4. 11787990 - Bionic and dual-phobic high-performance water-based drilling fluid (2023-10-17),

5. 11686190 - 4D quantitative and intelligent diagnosis method and system for spatio-temporal evolution of oil-gas reservoir damage types and extent (2023-06-27),

6. 11225837 - Dual-speed dual—core enhanced drilling equipment (2022-01-18),

7. 10072197 - Crosslinked high molecular weight polymers for use in water-based drilling fluids (2018-09-11),

CNPC Chuanqing Drilling Engineering Company Limited is a subsidiary of China National Petroleum Corporation (CNPC) specializing in oil and gas drilling services. With advanced technology and experienced professionals, the company provides high-quality drilling solutions to clients worldwide. Established in 1994, CNPC Chuanqing Drilling Engineering Company Limited has a strong reputation for excellence in the industry.

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USPTO Data Jan 1 1976 - Jan 6 2026

7 Patents

#29 in Chengdu

#3,448 in China

Chengdu, China

Cnpc Chuanqing Drilling Engineering Company Limited