Inventor
GRIFFITHS ROGER
MY16 patents
⚠️ This page may combine multiple inventors who share the name “GRIFFITHS ROGER”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
SCHLUMBERGER TECHNOLOGY CORP
13 patentsUS7418865B2Sep 2, 2008
Method and apparatus for ultrasound velocity measurements in drilling fluids
SCHLUMBERGER TECHNOLOGY CORP30 citations88
US7432499B2Oct 7, 2008
Method and apparatus for detecting while drilling underbalanced the presence and depth of water produced from the formation
SCHLUMBERGER TECHNOLOGY CORP13 citations83
US7966166B2Jun 21, 2011
Method for determining a set of net present values to influence the drilling of a wellbore and increase production
SCHLUMBERGER TECHNOLOGY CORP15 citations82
US7623968B2Nov 24, 2009
Determination of porosity and fluid saturation of underground formations
SCHLUMBERGER TECHNOLOGY CORP9 citations80
US7523002B2Apr 21, 2009
Method and system for cause-effect time lapse analysis
SCHLUMBERGER TECHNOLOGY CORP7 citations73
US10422221B2Sep 24, 2019
Formation evaluation using stochastic analysis of log data
SCHLUMBERGER TECHNOLOGY CORP2 citations72
US10571600B2Feb 25, 2020
Determination of formation properties using graphical methods
SCHLUMBERGER TECHNOLOGY CORP2 citations71
US7342222B2Mar 11, 2008
Method and apparatus for downhole spectroscopy processing
SCHLUMBERGER TECHNOLOGY CORP8 citations68
US7669468B2Mar 2, 2010
Measuring mud flow velocity using pulsed neutrons
SCHLUMBERGER TECHNOLOGY CORP2 citations62
US10451769B2Oct 22, 2019
Method for determining petrophysical properties from logging measurements
SCHLUMBERGER TECHNOLOGY CORP1 citations59
US10400594B2Sep 3, 2019
Petrophysical relationships using blind source separation techniques
SCHLUMBERGER TECHNOLOGY CORP0 citations51
US10323498B2Jun 18, 2019
Methods, computer-readable media, and systems for applying 1-dimensional (1D) processing in a non-1D formation
SCHLUMBERGER TECHNOLOGY CORP0 citations48
US9945977B2Apr 17, 2018
Method and apparatus for determining formation properties using non-directional electromagnetic measurements in high angle or horizontal wells
SCHLUMBERGER TECHNOLOGY CORP0 citations38