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Gas-lift system
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Patent number 11,391,130
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Issue date Jul 19, 2022
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INNOVEX DOWNHOLE SOLUTIONS, INC.
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Adam Anderson
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E21 - EARTH DRILLING MINING
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Insert safety valve (variants)
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Patent number 11,041,364
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Issue date Jun 22, 2021
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JOINT STOCK COMPANY “NOVOMET-PERM”
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Viktor Georgievich Ostrovskiy
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E21 - EARTH DRILLING MINING
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Insert safety valve system
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Patent number 10,508,512
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Issue date Dec 17, 2019
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Baker Hughes, a GE company, LLC
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Todd C. Jackson
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E21 - EARTH DRILLING MINING
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Downhole apparatus and method
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Patent number 10,132,138
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Issue date Nov 20, 2018
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Weatherford Technology Holdings, LLC
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Daniel George Purkis
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E21 - EARTH DRILLING MINING
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Downhole apparatus and method
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Patent number 10,077,633
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Issue date Sep 18, 2018
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Petrowell Limited
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Daniel George Purkis
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E21 - EARTH DRILLING MINING
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Downhole apparatus and method
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Patent number 10,053,958
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Issue date Aug 21, 2018
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Weatherford Technology Holdings, LLC
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Daniel George Purkis
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E21 - EARTH DRILLING MINING
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Downhole apparatus and method
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Patent number 10,018,015
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Issue date Jul 10, 2018
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Weatherford Technology Holdings, LLC
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Daniel George Purkis
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E21 - EARTH DRILLING MINING
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Valve system
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Patent number 9,587,463
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Issue date Mar 7, 2017
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Petroleum Technology Company AS
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Magnar Tveiten
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E21 - EARTH DRILLING MINING
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Valve system
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Patent number 9,140,096
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Issue date Sep 22, 2015
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Petroleum Technology Company AS
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Magnar Tveiten
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E21 - EARTH DRILLING MINING
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