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Danny A. Hlavinka
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Houston, TX, US
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Patents Grants
last 30 patents
Information
Patent Grant
Downhole fluid communication apparatus and method
Patent number
8,561,686
Issue date
Oct 22, 2013
Schlumberger Technology Corporation
Chen Tao
E21 - EARTH DRILLING MINING
Information
Patent Grant
Downhole fluid communication apparatus and method
Patent number
8,220,536
Issue date
Jul 17, 2012
Schlumberger Technology Corporation
Chen Tao
E21 - EARTH DRILLING MINING
Information
Patent Grant
Wellbore formation evaluation system and method
Patent number
7,568,521
Issue date
Aug 4, 2009
Schlumberger Technology Corporation
Jonathan Brown
E21 - EARTH DRILLING MINING
Information
Patent Grant
Wellbore formation evaluation system and method
Patent number
7,428,925
Issue date
Sep 30, 2008
Schlumberger Technology Corporation
Jonathan Brown
E21 - EARTH DRILLING MINING
Information
Patent Grant
Down hole mud circulation for wireline tools
Patent number
5,927,402
Issue date
Jul 27, 1999
Schlumberger Technology Corporation
Walter R. Benson
E21 - EARTH DRILLING MINING
Patents Applications
last 30 patents
Information
Patent Application
DOWNHOLE FLUID COMMUNICATION APPARATUS AND METHOD
Publication number
20110284212
Publication date
Nov 24, 2011
SCHLUMBERGER TECHNOLOGY CORPORATION
Chen Tao
E21 - EARTH DRILLING MINING
Information
Patent Application
DOWNHOLE FLUID COMMUNICATION APPARATUS AND METHOD
Publication number
20100155053
Publication date
Jun 24, 2010
Chen Tao
E21 - EARTH DRILLING MINING
Information
Patent Application
WELLBORE FORMATION EVALUATION SYSTEM AND METHOD
Publication number
20080041593
Publication date
Feb 21, 2008
Jonathan Brown
E21 - EARTH DRILLING MINING
Information
Patent Application
Downhole Fluid Communication Apparatus and Method
Publication number
20070151727
Publication date
Jul 5, 2007
SCHLUMBERGER TECHNOLOGY CORPORATION
Chen Tao
E21 - EARTH DRILLING MINING
Information
Patent Application
Wellbore formation evaluation system and method
Publication number
20070114021
Publication date
May 24, 2007
Jonathan Brown
E21 - EARTH DRILLING MINING