Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12378462 | Sealing gel with delayed gelation for well cementation, preparation method, and application | Chang Lu, Huajie Liu, Yuhuan Bu, Doudou Wang | 2025-08-05 |
| 12071587 | Anti-corrosion and low-heat-conduction annulus protection fluid for deep-sea oil and gas exploitation and preparation method thereof | Chang Lu, Yuhuan Bu, Shaorui Jing, Huajie Liu, Heng YANG | 2024-08-27 |
| 11905812 | Intra-layer reinforcement method, and consolidation and reconstruction simulation experiment system and evaluation method for gas hydrate formation | Yuhuan Bu, Huajie Liu, Dong Lin, Chang Lu, Xinyang Guo +4 more | 2024-02-20 |
| 11866367 | Oil well cement composite permeation enhancement agent suitable for hydrate layer and preparation method | Chang Lu, Huajie Liu, Yuhuan Bu, Changyou Xiang, Qiang Wang +1 more | 2024-01-09 |
| 11834605 | Geopolymer cementing fluid with controllable thickening time | Kunpeng Li, Yang Li, Ming Li, Jiaxin Zhao, Yuhuan Bu +1 more | 2023-12-05 |
| 11820936 | Scour-resistant interface enhancer used for well cementing of coalbed methane wells, preparation method, and application | Yuhuan Bu, Chang Lu, Lingyun Zhao, Yuanlong Wei, Qi Zhao +3 more | 2023-11-21 |
| 11719658 | Method of cement for well cementing in penetrated hydrate layer | Yuhuan Bu, Shengda Shen, Chang Lu, Huajie Liu, Xun Shan +1 more | 2023-08-08 |
| 11685683 | High-strength geopolymer hollow microsphere, preparation method thereof and phase change energy storage microsphere | Huajie Liu, Yuhuan Bu, Rui Ma, Longlong An | 2023-06-27 |
| 11567018 | Cement performance evaluation device and cement design method for cementing in penetrated hydrate deposit | Huajie Liu, Yuhuan Bu, Chang Lu, Xinyang Guo, Shengda Shen +1 more | 2023-01-31 |