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Douglas N. DERR
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The Woodlands, TX, US
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Patents Grants
last 30 patents
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Patent Grant
Electromagnetic ranging source suitable for use in a drill string
Patent number
9,534,488
Issue date
Jan 3, 2017
Halliburton Energy Services, Inc.
Doug Derr
E21 - EARTH DRILLING MINING
Information
Patent Grant
Method and system for rapid deployment of a capping stack
Patent number
9,222,494
Issue date
Dec 29, 2015
Halliburton Energy Services, Inc.
Sean A. Roach
F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information
Patent Grant
Diverter spool and methods of using the same
Patent number
8,997,879
Issue date
Apr 7, 2015
Halliburton Energy Services, Inc.
Douglas N. Derr
E21 - EARTH DRILLING MINING
Patents Applications
last 30 patents
Information
Patent Application
Electromagnetic Ranging Source Suitable for Use in a Drill String
Publication number
20160177705
Publication date
Jun 23, 2016
Halliburton Energy Services, Inc.
Doug DERR
G01 - MEASURING TESTING
Information
Patent Application
METHOD AND SYSTEM FOR RAPID DEPLOYMENT OF A CAPPING STACK
Publication number
20140196884
Publication date
Jul 17, 2014
Halliburton Energy Services, Inc.
Sean A. Roach
E21 - EARTH DRILLING MINING
Information
Patent Application
Diverter spool and methods of using the same
Publication number
20130056226
Publication date
Mar 7, 2013
Halliburton Energy Services, Inc.
Douglas N. DERR
E21 - EARTH DRILLING MINING