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Chengdu, CN
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Patents Grants
last 30 patents
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Patent Grant
Sealing integrity evaluation device for high-temperature and high-...
Patent number
11,733,121
Issue date
Aug 22, 2023
Southwest Petroleum University
Zhi Zhang
E21 - EARTH DRILLING MINING
Information
Patent Grant
Experimental devices for simulating erosion of tubing strings cause...
Patent number
11,630,043
Issue date
Apr 18, 2023
SOUTHWEST PETROLEUM UNIVERSITY
Zhi Zhang
G01 - MEASURING TESTING
Patents Applications
last 30 patents
Information
Patent Application
EXPERIMENTAL DEVICES FOR SIMULATING EROSION OF TUBING STRINGS CAUSE...
Publication number
20220373445
Publication date
Nov 24, 2022
SOUTHWEST PETROLEUM UNIVERSITY
Zhi ZHANG
G01 - MEASURING TESTING
Information
Patent Application
Sealing integrity evaluation device for high-temperature and high-p...
Publication number
20210231520
Publication date
Jul 29, 2021
Southwest Petroleum University
Zhi Zhang
G01 - MEASURING TESTING