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Cnpc Engineering Technology R&d Company Limited

USPTO Granted Patents = 19

CIPO Patents = 10

EPO Patents = 1

Forward Citations = 7

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189 inventors (with patents filed for the assignee):

Jianzhou Jin (6 out of 6 patents)

Yongjin Yu (6 out of 6 patents)

Long Li (4 out of 6 patents)

4. Tao Jia (4 out of 12 patents)

5. Mingjie Lv (4 out of 4 patents)

6. Ming Xu (4 out of 132 patents)

7. Fengzhong Qi (4 out of 4 patents)

8. Shuoqiong Liu (4 out of 4 patents)

9. Zishuai Liu (4 out of 4 patents)

10. Yuchao Guo (4 out of 4 patents)

11. Chi Zhang (4 out of 34 patents)

12. Yuping Yang (3 out of 3 patents)

13. Jingping Liu (3 out of 25 patents)

14. Yong Ma (3 out of 28 patents)

15. Binggui Xu (3 out of 3 patents)

19 patents: Sort by Forward Citations

1. 12448885 - Mud pressure wave signal modulation apparatus and method (2025-10-21),

2. 12391861 - Cement slurry system, preparation method therefor and use thereof (2025-08-19),

3. 12305116 - Ultra-high temperature resistant cement slurry system for cementing and preparation method and use thereof (2025-05-20),

4. 12146095 - pH-responsive nano-gel plugging material, and preparation method therefor and use thereof (2024-11-19),

5. 11959375 - Method for evaluating downhole working condition of a PDC bit (2024-04-16),

6. 11926787 - Well cementing method for improving well cementing quality by controlling hydration heat of cement slurry (2024-03-12),

7. 11787990 - Bionic and dual-phobic high-performance water-based drilling fluid (2023-10-17),

8. 11686190 - 4D quantitative and intelligent diagnosis method and system for spatio-temporal evolution of oil-gas reservoir damage types and extent (2023-06-27),

9. 11618844 - High temperature resistant Portland cement slurry and production method thereof (2023-04-04),

10. 11293254 - Expansion tool assembly for expandable tubular (2022-04-05),

11. 11060009 - Filtrate reducer for temperature-resistant calcium-resistant water-based drilling fluid used in oil and gas reservoir protection, drilling fluid, and uses thereof (2021-07-13),

12. 11053424 - Temperature-resistant calcium-resistant water-based drilling fluid for oil and gas reservoir protection and use thereof (2021-07-06),

13. 10975284 - Well cementation working solution prepared from red mud, slag and waste drilling fluids (2021-04-13),

14. 10876945 - Method for evaluating breakage strength of first and second cemented surfaces of well cementation under dynamic load (2020-12-29),

15. 10858917 - Expandable liner hanger (2020-12-08),

CNPC Engineering Technology R&D Company Limited (CNPCET) is a subsidiary of China National Petroleum Corporation (CNPC), one of the largest oil and gas companies in the world. It specializes in research and development of engineering technologies for the petroleum industry. CNPCET is committed to providing innovative solutions and services in areas such as oil and gas exploration, production, refining, and petrochemical engineering. With a strong focus on technological advancements, CNPCET strives to elevate the efficiency, safety, and sustainability of the petroleum industry.

This text is generated by artificial intelligence and may not be accurate.

Company Badge

USPTO Data Jan 1 1976 - Dec 2 2025

19 Patents

#146 in Beijing

#1,358 in China

#31,656 in the World

Cnpc Engineering Technology R&d Company Limited

Forward Citations = 7

189 inventors:

Jianzhou Jin (6 out of 6 patents)

Yongjin Yu (6 out of 6 patents)

Long Li (4 out of 6 patents)

4. Tao Jia (4 out of 12 patents)

5. Mingjie Lv (4 out of 4 patents)

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