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Patents Grants
last 30 patents
Information
Patent Grant
Downhole multidimensional imaging feature extraction method and ima...
Patent number
11,913,324
Issue date
Feb 27, 2024
China Petroleum and Chemical Corporation
Yijin Zeng
E21 - EARTH DRILLING MINING
Information
Patent Grant
Downhole auxiliary drilling apparatus
Patent number
10,927,612
Issue date
Feb 23, 2021
China Petroleum and Chemical Corporation
Yijin Zeng
E21 - EARTH DRILLING MINING
Information
Patent Grant
Resistivity measurement while drilling device and method
Patent number
10,571,596
Issue date
Feb 25, 2020
China Petroleum and Chemical Corporation
Yijin Zeng
G01 - MEASURING TESTING
Information
Patent Grant
Data transmission system and method for transmission of downhole me...
Patent number
9,739,141
Issue date
Aug 22, 2017
China Petroleum and Chemical Corporation
Yijin Zeng
E21 - EARTH DRILLING MINING
Information
Patent Grant
Power transmission unit of an impactor, a hydraulic jet impactor an...
Patent number
7,426,965
Issue date
Sep 23, 2008
China Petroleum and Chemical Corporation
Xinghua Tao
E21 - EARTH DRILLING MINING
Information
Patent Grant
Automatic control system and method for bottom hole pressure in the...
Patent number
7,158,886
Issue date
Jan 2, 2007
China Petroleum and Chemical Corporation
Xutian Hou
E21 - EARTH DRILLING MINING
Patents Applications
last 30 patents
Information
Patent Application
DOWNHOLE MULTIDIMENSIONAL IMAGING FEATURE EXTRACTION METHOD AND IMA...
Publication number
20220333478
Publication date
Oct 20, 2022
China Petroleum and Chemical Corporation
Yijin ZENG
E21 - EARTH DRILLING MINING
Information
Patent Application
DOWNHOLE AUXILIARY DRILLING APPARATUS
Publication number
20190330931
Publication date
Oct 31, 2019
China Petroleum and Chemical Corporation
Yijin ZENG
E21 - EARTH DRILLING MINING
Information
Patent Application
RESISTIVITY MEASUREMENT WHILE DRILLING DEVICE AND METHOD
Publication number
20180045847
Publication date
Feb 15, 2018
China Petroleum and Chemical Corporation
Yijin ZENG
G01 - MEASURING TESTING
Information
Patent Application
Data Transmission System and Method for Transmission of Downhole Me...
Publication number
20160115783
Publication date
Apr 28, 2016
CHINA PETROLEUM & CHEMICAL CORPORATION
Yijin Zeng
E21 - EARTH DRILLING MINING
Information
Patent Application
Power transmission unit of an impactor, a hydraulic jet impactor an...
Publication number
20060011362
Publication date
Jan 19, 2006
CHINA PETROLEUM & CHEMICAL CORPORATION
Xinghua Tao
E21 - EARTH DRILLING MINING
Information
Patent Application
Automatic control system and method for bottom hole pressure in the...
Publication number
20050096848
Publication date
May 5, 2005
Xutian Hou
E21 - EARTH DRILLING MINING