Yanjun ZHOU

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Dongying, CN

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Patents Grantslast 30 patents

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
Information Patent Grant
Push-the-bit rotary guiding device and application method thereof
- Patent number 10,253,568
- Issue date Apr 9, 2019
- SINOPEC SHENGLI PETROLEUM ENGINEERING CO., LTD. DRILLING TECHNOLOGY RESEARCH...
- Hongbing Xiao
- G01 - MEASURING TESTING
Information Patent Grant
Comb polymer, method of preparing the same, and use thereof
- Patent number 9,938,445
- Issue date Apr 10, 2018
- Sinopec Oilfield Service Corporation
- Gongrang Li
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...

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
Static push-the-bit rotary guiding device
- Publication number 20180223599
- Publication date Aug 9, 2018
- SINOPEC SHENGLI PETROLEUM ENGINEERING CO., LTD. DRILLING TECHNOLOGY RESEARCH...
- Jinzhou Yang
- E21 - EARTH DRILLING MINING
Information Patent Application
Push-the-bit rotary guiding device and application method thereof
- Publication number 20170284158
- Publication date Oct 5, 2017
- SINOPEC SHENGLI PETROLEUM ENGINEERING CO., LTD., DRILLING TECHNOLOGY RESEARCH...
- Xiao Hongbing
- G01 - MEASURING TESTING
Information Patent Application
Comb polymer, method of preparing the same, and use thereof
- Publication number 20150203736
- Publication date Jul 23, 2015
- Sinopec Oilfield Service Corporation
- Gongrang LI
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...