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Vijay Kumar Keerthivasan
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Singapore, SG
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Patents Grants
last 30 patents
Information
Patent Grant
Multi-zone actuation system using wellbore darts
Patent number
10,392,910
Issue date
Aug 27, 2019
Halliburton Energy Services, Inc.
Zachary Walton
E21 - EARTH DRILLING MINING
Information
Patent Grant
Off-set tubing string segments for selective location of downhole t...
Patent number
10,161,214
Issue date
Dec 25, 2018
Halliburton Energy Services, Inc.
Daniel Lorng Yon Wong
E21 - EARTH DRILLING MINING
Information
Patent Grant
Multi-zone actuation system using wellbore darts
Patent number
9,835,004
Issue date
Dec 5, 2017
Halliburton Energy Services, Inc.
Vijay Kumar Keerthivasan
E21 - EARTH DRILLING MINING
Information
Patent Grant
Locking mechanism for downhole positioning of sleeves
Patent number
9,388,666
Issue date
Jul 12, 2016
Halliburton Energy Services, Inc.
Ryan Zhe Cong Foong
E21 - EARTH DRILLING MINING
Patents Applications
last 30 patents
Information
Patent Application
MULTI-ZONE ACTUATION SYSTEM USING WELLBORE DARTS
Publication number
20160258260
Publication date
Sep 8, 2016
Halliburton Energy Services, Inc.
Zachary Walton
E21 - EARTH DRILLING MINING
Information
Patent Application
MULTI-ZONE ACTUATION SYSTEM USING WELLBORE DARTS
Publication number
20160251923
Publication date
Sep 1, 2016
Halliburton Energy Services, Inc.
Vijay Kumar Keerthivasan
E21 - EARTH DRILLING MINING
Information
Patent Application
OFF-SET TUBING STRING SEGMENTS FOR SELECTIVE LOCATION OF DOWNHOLE T...
Publication number
20160251929
Publication date
Sep 1, 2016
Halliburton Energy Services, Inc.
Daniel Lorng Yon WONG
E21 - EARTH DRILLING MINING
Information
Patent Application
LOCKING MECHANISM FOR DOWNHOLE POSITIONING OF SLEEVES
Publication number
20150152711
Publication date
Jun 4, 2015
Halliburton Energy Services, Inc.
Ryan Zhe Cong Foong
E21 - EARTH DRILLING MINING