RG

Roger Griffiths

Schlumberger Technology: 16 patents #327 of 7,293Top 5%
Overall (All Time): #294,875 of 4,157,543Top 8%
16
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
10571600 Determination of formation properties using graphical methods Chanh Cao Minh, Kais Gzara 2020-02-25
10451769 Method for determining petrophysical properties from logging measurements John Rasmus, Christopher E. Morriss, Koji Ito, Hui Xie, Shahzad A. Asif +1 more 2019-10-22
10422221 Formation evaluation using stochastic analysis of log data Kais Gzara, Vikas Jain, Chanh Cao Minh 2019-09-24
10400594 Petrophysical relationships using blind source separation techniques Vikas Jain, Kais Gzara, Chanh Cao Minh 2019-09-03
10323498 Methods, computer-readable media, and systems for applying 1-dimensional (1D) processing in a non-1D formation Keli Sun, Koji Ito, Christopher E. Morriss, Steve F. Crary, Shahzad A. Asif 2019-06-18
9945977 Method and apparatus for determining formation properties using non-directional electromagnetic measurements in high angle or horizontal wells Keli Sun, Steve F. Crary, Christopher E. Morriss, Koji Ito 2018-04-17
9846256 Interactive display of results obtained from the inversion of logging data Denis Heliot, Nicholas N. Bennett, Georgi Kutiev, Emmanuel Legandre, Jean-Michel Denichou +3 more 2017-12-19
8521435 Estimating sigma log beyond the measurements points Chanh Cao Minh, Marie-Laure Mauborgne, Darwin V. Ellis 2013-08-27
8143570 Method and apparatus for detecting while drilling underbalanced the presence and depth of water produced from the formation John Edwards, Christian Stoller, Peter Wraight, Nicolas Renoux 2012-03-27
7966166 Method for determining a set of net present values to influence the drilling of a wellbore and increase production R. K. Michael Thambynayagam, Andrew Carnegie, Raj Banerjee, Gregory P. Grove, Luca Ortenzi +2 more 2011-06-21
7669468 Measuring mud flow velocity using pulsed neutrons Peter Wraight, Kenneth E. Stephenson 2010-03-02
7623968 Determination of porosity and fluid saturation of underground formations Ollivier Faivre, Thomas J. Neville, Geoff Weller 2009-11-24
7523002 Method and system for cause-effect time lapse analysis 2009-04-21
7432499 Method and apparatus for detecting while drilling underbalanced the presence and depth of water produced from the formation John Edwards, Christian Stoller, Peter Wraight, Nicolas Renoux 2008-10-07
7418865 Method and apparatus for ultrasound velocity measurements in drilling fluids Miguel F. Pabon 2008-09-02
7342222 Method and apparatus for downhole spectroscopy processing Jack Horkowitz, Kai Hsu 2008-03-11