Renlong ZHANG

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Beijing, CN

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Patents Grantslast 30 patents

Information Patent Grant
Well drilling tool and method for determining parameter thereof
- Patent number 12,031,410
- Issue date Jul 9, 2024
- China Petroleum and Chemical Corporation
- Haiping Zhang
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Drilling tool
- Patent number 11,946,342
- Issue date Apr 2, 2024
- China Petroleum and Chemical Corporation
- Baoping Lu
- E21 - EARTH DRILLING MINING
Information Patent Grant
Well drilling acceleration tool
- Patent number 11,920,437
- Issue date Mar 5, 2024
- China Petroleum and Chemical Corporation
- Haiping Zhang
- E21 - EARTH DRILLING MINING
Information Patent Grant
Drilling speed increasing device
- Patent number 11,898,417
- Issue date Feb 13, 2024
- China Petroleum and Chemical Corporation
- Jiachang Wang
- E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

Information Patent Application
Well Drilling Tool And Method For Determining Parameter Thereof
- Publication number 20230020998
- Publication date Jan 19, 2023
- China Petroleum and Chemical Corporation
- Haiping ZHANG
- E21 - EARTH DRILLING MINING
Information Patent Application
WELL DRILLING ACCELERATION TOOL
- Publication number 20230003084
- Publication date Jan 5, 2023
- China Petroleum and Chemical Corporation
- Haiping ZHANG
- E21 - EARTH DRILLING MINING
Information Patent Application
DRILLING SPEED INCREASING DEVICE
- Publication number 20230003085
- Publication date Jan 5, 2023
- China Petroleum and Chemical Corporation
- Jiachang WANG
- E21 - EARTH DRILLING MINING
Information Patent Application
DRILLING TOOL
- Publication number 20220412165
- Publication date Dec 29, 2022
- China Petroleum and Chemical Corporation
- Baoping LU
- E21 - EARTH DRILLING MINING