ZENG; Qijun
Patent Applications and Registrations
Patent applications and USPTO patent grants for ZENG; Qijun.The latest application filed is for "method for measuring rheological property of drilling fluid by using curved pipe on site".
- ZENG; Qijun - Chengdu CN
| Patent | Date |
|---|---|
| Method For Measuring Rheological Property Of Drilling Fluid By Using Curved Pipe On Site App 20220228961 - XIE; Dengpan ; et al. | 2022-07-21 |
| Wet connector for trident rigless electrical submersible pump (ESP) technology Grant 11,359,441 - Zhang , et al. June 14, 2 | 2022-06-14 |
| Spiral deployed isolation tool Grant 11,326,416 - Zheng , et al. May 10, 2 | 2022-05-10 |
| Integrated coupling and downhole plugging system and plugging method Grant 11,261,691 - Zeng March 1, 2 | 2022-03-01 |
| Wet Connector For Trident Rigless Electrical Submersible Pump (esp) Technology App 20220056768 - ZHANG; Qiang ; et al. | 2022-02-24 |
| Integrated Coupling And Downhole Plugging System And Plugging Method App 20220018210 - Zeng; Qijun | 2022-01-20 |
| Ball seat Grant 10,934,803 - Zeng March 2, 2 | 2021-03-02 |
| Ball Seat App 20200291739 - ZENG; Qijun | 2020-09-17 |
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