Xiaohua Zhu

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Chengdu, Sichuan, CN

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Patents Grantslast 30 patents

Information Patent Grant
Patching construction method using a hydraulic variable-grade expan...
- Patent number 11,965,389
- Issue date Apr 23, 2024
- SOUTHWEST PETROLEUM UNIVERSITY
- Xiaohua Zhu
- E21 - EARTH DRILLING MINING
Information Patent Grant
Hydraulic oscillation tool with variable stage, small pressure drop...
- Patent number 11,846,138
- Issue date Dec 19, 2023
- SOUTHWEST PETROLEUM UNIVERSITY
- Xiaohua Zhu
- E21 - EARTH DRILLING MINING
Information Patent Grant
Hydraulic gentle vibration speed-enhancing drilling tool
- Patent number 10,472,891
- Issue date Nov 12, 2019
- Southwest Petroleum University
- Xiaohua Zhu
- E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

Information Patent Application
VALVE-CONTROLLED HIGH-ENERGY HYDROSTATIC DOWN-THE-HOLE IMPACT HAMMER
- Publication number 20240337157
- Publication date Oct 10, 2024
- Xiaohua Zhu
- E21 - EARTH DRILLING MINING
Information Patent Application
HYDRAULIC OSCILLATION TOOL WITH VARIABLE STAGE, SMALL PRESSURE DROP...
- Publication number 20230184038
- Publication date Jun 15, 2023
- SOUTHWEST PETROLEUM UNIVERSITY
- Xiaohua Zhu
- E21 - EARTH DRILLING MINING
Information Patent Application
PATCHING CONSTRUCTION METHOD USING A HYDRAULIC VARIABLE-GRADE EXPAN...
- Publication number 20230167703
- Publication date Jun 1, 2023
- SOUTHWEST PETROLEUM UNIVERSITY
- XIAOHUA ZHU
- E21 - EARTH DRILLING MINING
Information Patent Application
Hydraulic Gentle Vibration Speed Enhancing Drilling
- Publication number 20180051516
- Publication date Feb 22, 2018
- SOUTHWEST PETROLEUM UNIVERSITY
- Xiaohua Zhu
- E21 - EARTH DRILLING MINING