Zengkai LIU

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Qingdao, CN

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Patents Grantslast 30 patents

Information Patent Grant
System for navigation detection and inclination measurement of adva...
- Patent number 11,459,887
- Issue date Oct 4, 2022
- Shandong University of Science and Technology
- Yuxia Li
- E21 - EARTH DRILLING MINING
Information Patent Grant
Method and system for guaranteeing safety of offshore oil well cont...
- Patent number 11,346,200
- Issue date May 31, 2022
- CHINA UNIVERSITY OF PETROLEUM (EAST CHINA)
- Baoping Cai
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Method for assessing safety integrity level of offshore oil well co...
- Patent number 11,243,509
- Issue date Feb 8, 2022
- CHINA UNIVERSITY OF PETROLEUM (EAST CHINA)
- Baoping Cai
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Fully-electrically driven downhole safety valve
- Patent number 10,989,019
- Issue date Apr 27, 2021
- CHINA UNIVERSITY OF PETROLEUM (EAST CHINA)
- Baoping Cai
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...

Patents Applicationslast 30 patents

Information Patent Application
System For Navigation Detection And Inclination Measurement Of Adva...
- Publication number 20220120181
- Publication date Apr 21, 2022
- SHANDONG UNIVERSITY OF SCIENCE AND TECHNOLOGY
- Yuxia LI
- E21 - EARTH DRILLING MINING
Information Patent Application
FULLY-ELECTRICALLY DRIVEN DOWNHOLE SAFETY VALVE
- Publication number 20200370394
- Publication date Nov 26, 2020
- China University of Petroleum (East China)
- Baoping CAI
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Application
METHOD AND SYSTEM FOR GUARANTEEING SAFETY OF OFFSHORE OIL WELL CONT...
- Publication number 20200370408
- Publication date Nov 26, 2020
- China University of Petroleum (East China)
- Baoping CAI
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
METHOD FOR ASSESSING SAFETY INTEGRITY LEVEL OF OFFSHORE OIL WELL CO...
- Publication number 20200371490
- Publication date Nov 26, 2020
- China University of Petroleum (East China)
- Baoping CAI
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
METHOD AND SYSTEM FOR EVALUATING MACRO RESILIENCE OF OFFSHORE OIL W...
- Publication number 20200370429
- Publication date Nov 26, 2020
- China University of Petroleum (East China)
- Baoping CAI
- E21 - EARTH DRILLING MINING