Huangang ZHU

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Dongying, Shandong, CN

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Patents Grantslast 30 patents

Information Patent Grant
Double-channel fluid injection apparatus
- Patent number 12,049,792
- Issue date Jul 30, 2024
- Sinopec Petroleum Engineering Technology Service Co., Ltd.
- Huangang Zhu
- E21 - EARTH DRILLING MINING
Information Patent Grant
Flow splitting device for gas reverse circulation drilling
- Patent number 11,946,334
- Issue date Apr 2, 2024
- China Petroleum and Chemical Corporation
- Chuanwei Zhao
- E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

Information Patent Application
Flow Splitting Device for Gas Reverse Circulation Drilling
- Publication number 20230147453
- Publication date May 11, 2023
- China Petroleum and Chemical Corporation
- Chuanwei ZHAO
- E21 - EARTH DRILLING MINING
Information Patent Application
DOUBLE-CHANNEL FLUID INJECTION APPARATUS
- Publication number 20220243540
- Publication date Aug 4, 2022
- Sinopec Petroleum Engineering Technology Service Co., Ltd.
- Huangang ZHU
- E21 - EARTH DRILLING MINING