Roger Griffiths

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Schffhausen, CH

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Patents Grantslast 30 patents

Information Patent Grant
Interactive display of results obtained from the inversion of loggi...
- Patent number 9,846,256
- Issue date Dec 19, 2017
- Schlumberger Technology Corporation
- Denis Heliot
- G01 - MEASURING TESTING
Information Patent Grant
Estimating sigma log beyond the measurements points
- Patent number 8,521,435
- Issue date Aug 27, 2013
- Schlumberger Technology Corporation
- Chanh Cao Minh
- G01 - MEASURING TESTING
Information Patent Grant
Method and apparatus for detecting while drilling underbalanced the...
- Patent number 8,143,570
- Issue date Mar 27, 2012
- Schlumberger Technology Corporation
- John Edwards
- E21 - EARTH DRILLING MINING
Information Patent Grant
Method for determining a set of net present values to influence the...
- Patent number 7,966,166
- Issue date Jun 21, 2011
- Schlumberger Technology Corp.
- R. K. Michael Thambynayagam
- E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

Information Patent Application
Interactive Display of Results Obtained from the Inversion of Loggi...
- Publication number 20130038463
- Publication date Feb 14, 2013
- Denis Heliot
- G01 - MEASURING TESTING
Information Patent Application
Borehole Imaging and Formation Evaluation While Drilling
- Publication number 20120192640
- Publication date Aug 2, 2012
- Chanh Cao Minh
- E21 - EARTH DRILLING MINING
Information Patent Application
Method and Apparatus for Detecting while Drilling Underbalanced The...
- Publication number 20120119076
- Publication date May 17, 2012
- John Edwards
- E21 - EARTH DRILLING MINING
Information Patent Application
ESTIMATING SIGMA LOG BEYOND THE MEASUREMENTS POINTS
- Publication number 20110004408
- Publication date Jan 6, 2011
- Chanh Cao Minh
- G01 - MEASURING TESTING
Information Patent Application
SIGMA MEASUREMENT DOWNHOLE
- Publication number 20100187412
- Publication date Jul 29, 2010
- Jeffrey Grant
- G01 - MEASURING TESTING
Information Patent Application
Method for determining a set of net present values to influence the...
- Publication number 20090260880
- Publication date Oct 22, 2009
- R. K. Thambynayagam
- E21 - EARTH DRILLING MINING