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Roger Griffiths
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Abu Dhabi, AE
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Patents Grants
last 30 patents
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Patent Grant
Measuring mud flow velocity using pulsed neutrons
Patent number
7,669,468
Issue date
Mar 2, 2010
Schlumberger Technology Corporation
Peter Wraight
E21 - EARTH DRILLING MINING
Information
Patent Grant
Method and system for cause-effect time lapse analysis
Patent number
7,523,002
Issue date
Apr 21, 2009
Schlumberger Technology Corporation
Roger Griffiths
E21 - EARTH DRILLING MINING
Information
Patent Grant
Method and apparatus for detecting while drilling underbalanced the...
Patent number
7,432,499
Issue date
Oct 7, 2008
Schlumberger Technology Corporation
John Edwards
E21 - EARTH DRILLING MINING
Information
Patent Grant
Method and apparatus for ultrasound velocity measurements in drilli...
Patent number
7,418,865
Issue date
Sep 2, 2008
Schlumberger Technology Corporation
Roger Griffiths
E21 - EARTH DRILLING MINING
Patents Applications
last 30 patents
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Patent Application
METHOD AND APPARATUS FOR DETECTING WHILE DRILLING UNDERBALANCED THE...
Publication number
20090139713
Publication date
Jun 4, 2009
John Edwards
E21 - EARTH DRILLING MINING
Information
Patent Application
Method and apparatus for detecting while drilling underbalanced the...
Publication number
20060180754
Publication date
Aug 17, 2006
John Edwards
E21 - EARTH DRILLING MINING
Information
Patent Application
Method and system for cause-effect time lapse analysis
Publication number
20060116823
Publication date
Jun 1, 2006
Roger Griffiths
E21 - EARTH DRILLING MINING