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Patents Grants
last 30 patents
Information
Patent Grant
Energy-gathered bundle type nesting plugging and wall reinforcing d...
Patent number
10,822,913
Issue date
Nov 3, 2020
China University of Petroleum—Beijing
Yiqun Zhang
F42 - AMMUNITION BLASTING
Information
Patent Grant
Hydrothermal geothermal development method of multilateral well clo...
Patent number
10,401,056
Issue date
Sep 3, 2019
China University of Petroleum—Beijing
Xianzhi Song
E21 - EARTH DRILLING MINING
Patents Applications
last 30 patents
Information
Patent Application
COILED TUBING FLEXIBLE DRILL ROD ULTRA-SHORT RADIUS RADIAL DRILLING...
Publication number
20240254837
Publication date
Aug 1, 2024
China University of Petroleum-Beijing
Zhongwei HUANG
E21 - EARTH DRILLING MINING
Information
Patent Application
ENERGY-GATHERED BUNDLE TYPE NESTING PLUGGING AND WALL REINFORCING D...
Publication number
20190153809
Publication date
May 23, 2019
China University of Petroleum-Beijing
Yiqun Zhang
E21 - EARTH DRILLING MINING
Information
Patent Application
HYDROTHERMAL GEOTHERMAL DEVELOPMENT METHOD OF MULTILATERAL WELL CLO...
Publication number
20180283735
Publication date
Oct 4, 2018
CHINA UNIVERSITY OF PETROLEUM-BEIJING
Xianzhi SONG
F24 - HEATING RANGES VENTILATING