Inventor
CHEMALI ROLAND E
US38 patents
⚠️ This page may combine multiple inventors who share the name “CHEMALI ROLAND E”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
BAKER HUGHES INC
15 patentsUS7400262B2Jul 15, 2008
Apparatus and methods for self-powered communication and sensor network
BAKER HUGHES INC80 citations98
US6957708B2Oct 25, 2005
Electrical imaging in conductive and non-conductive mud
BAKER HUGHES INC56 citations94
US6850068B2Feb 1, 2005
Formation resistivity measurement sensor contained onboard a drill bit (resistivity in bit)
BAKER HUGHES INC107 citations94
US7894990B2Feb 22, 2011
Method of generating a deep resistivity image in LWD measurements
BAKER HUGHES INC21 citations93
US7483793B2Jan 27, 2009
Method of generating a deep resistivity image in LWD measurements
BAKER HUGHES INC29 citations93
US7405563B2Jul 29, 2008
Compensation of magnetic influence in a MWD system
BAKER HUGHES INC21 citations93
US7723991B2May 25, 2010
Apparatus and method for azimuthal MWD resistivity imaging at multiple depths of investigation
BAKER HUGHES INC22 citations92
US7375530B2May 20, 2008
Method for signal enhancement in azimuthal propagation resistivity while drilling
BAKER HUGHES INC20 citations92
US7114565B2Oct 3, 2006
Measurement-while-drilling assembly using real-time toolface oriented measurements
BAKER HUGHES INC47 citations92
US7063174B2Jun 20, 2006
Method for reservoir navigation using formation pressure testing measurement while drilling
BAKER HUGHES INC37 citations91
US8008919B2Aug 30, 2011
Method for compensating drill pipe and near-borehole effect on and electronic noise in transient resistivity measurements
BAKER HUGHES INC13 citations84
US7994790B2Aug 9, 2011
Electromagnetic and magnetostatic shield to perform measurements ahead of the drill bit
BAKER HUGHES INC15 citations84
US7973532B2Jul 5, 2011
Downhole spread spectrum induction instruments
BAKER HUGHES INC13 citations84
US7839149B2Nov 23, 2010
Multi-component resistivity logging tool with multiple antennas using common antenna grooves
BAKER HUGHES INC18 citations84
US7915895B2Mar 29, 2011
Method of calibrating an azimuthal inductive cross-coil or tilted coil instrument
BAKER HUGHES INC16 citations83
HALLIBURTON LOGGING SERVICES
6 patentsUS5428293AJun 27, 1995
Logging while drilling apparatus with multiple depth of resistivity investigation
HALLIBURTON LOGGING SERVICES282 citations98
US5045795ASep 3, 1991
Azimuthally oriented coil array for MWD resistivity logging
HALLIBURTON LOGGING SERVICES126 citations97
US5038107AAug 6, 1991
Method and apparatus for making induction measurements through casing
HALLIBURTON LOGGING SERVICES90 citations95
US5191290AMar 2, 1993
Logging apparatus for measurement of earth formation resistivity
HALLIBURTON LOGGING SERVICES31 citations92
US4918669AApr 17, 1990
Method and apparatus for sonic dip measurement
HALLIBURTON LOGGING SERVICES16 citations74
US5239267AAug 24, 1993
Method for improving the accuracy of dip determination using adjustable high pass filters
HALLIBURTON LOGGING SERVICES5 citations61
HALLIBURTON ENERGY SERVICES INC
4 patentsUS10385681B2Aug 20, 2019
Cross-coupling based fluid front monitoring
HALLIBURTON ENERGY SERVICES INC3 citations73
US10768336B2Sep 8, 2020
Formation logging using multicomponent signal-based measurement of anisotropic permittivity and resistivity
HALLIBURTON ENERGY SERVICES INC1 citations62
US10107094B2Oct 23, 2018
Formation density or acoustic impedance logging tool
HALLIBURTON ENERGY SERVICES INC0 citations52
US10202846B2Feb 12, 2019
Stoneley wave based pipe telemetry
HALLIBURTON ENERGY SERVICES INC0 citations49
CHEMALI ROLAND E
3 patentsUS9765609B2Sep 19, 2017
Downhole optical imaging tools and methods
CHEMALI ROLAND E28 citations91
US8134476B2Mar 13, 2012
Apparatus and methods for self-powered communication and sensor network
CHEMALI ROLAND E10 citations83
US10041343B2Aug 7, 2018
Micro-sonic density imaging while drilling systems and methods
CHEMALI ROLAND E0 citations49