Inventor
DOWNTON GEOFF
GB37 patents
⚠️ This page may combine multiple inventors who share the name “DOWNTON GEOFF”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
SCHLUMBERGER TECHNOLOGY CORP
16 patentsUS7136795B2Nov 14, 2006
Control method for use with a steerable drilling system
SCHLUMBERGER TECHNOLOGY CORP90 citations98
US7836975B2Nov 23, 2010
Morphable bit
SCHLUMBERGER TECHNOLOGY CORP38 citations93
US6877241B2Apr 12, 2005
Measurement of curvature of a subsurface borehole, and use of such measurement in directional drilling
SCHLUMBERGER TECHNOLOGY CORP23 citations93
US8011452B2Sep 6, 2011
Steerable drilling system
SCHLUMBERGER TECHNOLOGY CORP27 citations92
US7810585B2Oct 12, 2010
Bi-directional rotary steerable system actuator assembly and method
SCHLUMBERGER TECHNOLOGY CORP19 citations92
US7058512B2Jun 6, 2006
Downhole rate of penetration sensor assembly and method
SCHLUMBERGER TECHNOLOGY CORP24 citations92
US7168510B2Jan 30, 2007
Electrical transmission apparatus through rotating tubular members
SCHLUMBERGER TECHNOLOGY CORP43 citations87
US7987927B2Aug 2, 2011
Steering of bent housing mud motor downhole rotation device
SCHLUMBERGER TECHNOLOGY CORP11 citations84
US7168507B2Jan 30, 2007
Recalibration of downhole sensors
SCHLUMBERGER TECHNOLOGY CORP18 citations84
US7669669B2Mar 2, 2010
Tool face sensor method
SCHLUMBERGER TECHNOLOGY CORP15 citations82
US7896628B2Mar 1, 2011
Downhole motor seal and method
SCHLUMBERGER TECHNOLOGY CORP10 citations80
US7968184B2Jun 28, 2011
Erosion resistant surface and method of making erosion resistant surfaces
SCHLUMBERGER TECHNOLOGY CORP15 citations77
US7383898B2Jun 10, 2008
Inner and outer motor with eccentric stabilizer
SCHLUMBERGER TECHNOLOGY CORP2 citations63
US9284782B2Mar 15, 2016
Eccentric steering device and methods of directional drilling
SCHLUMBERGER TECHNOLOGY CORP0 citations52
US7941906B2May 17, 2011
Progressive cavity apparatus with transducer and methods of forming and use
SCHLUMBERGER TECHNOLOGY CORP1 citations52
US7916041B2Mar 29, 2011
Hole depth sensing
SCHLUMBERGER TECHNOLOGY CORP1 citations52
DOWNTON GEOFF
8 patentsUS8960329B2Feb 24, 2015
Steerable piloted drill bit, drill system, and method of drilling curved boreholes
DOWNTON GEOFF13 citations84
US8302705B2Nov 6, 2012
Steering system
DOWNTON GEOFF15 citations84
US8146679B2Apr 3, 2012
Valve-controlled downhole motor
DOWNTON GEOFF16 citations84
US8645571B2Feb 4, 2014
System and method for managing and/or using data for tools in a wellbore
DOWNTON GEOFF12 citations82
US9035788B2May 19, 2015
Real time telemetry
DOWNTON GEOFF13 citations76
US8967296B2Mar 3, 2015
Rotary steerable drilling apparatus and method
DOWNTON GEOFF6 citations73
US8893824B2Nov 25, 2014
Steerable drilling system
DOWNTON GEOFF2 citations62
US8658074B2Feb 25, 2014
Automatic elastomer extrusion apparatus and method
DOWNTON GEOFF2 citations62
JOHNSON ASHLEY BERNARD
3 patentsSHEPPARD MICHAEL CHARLES
3 patentsUS8534380B2Sep 17, 2013
System and method for directional drilling a borehole with a rotary drilling system
SHEPPARD MICHAEL CHARLES22 citations91
US8720605B2May 13, 2014
System for directionally drilling a borehole with a rotary drilling system
SHEPPARD MICHAEL CHARLES2 citations61
US8720604B2May 13, 2014
Method and system for steering a directional drilling system
SHEPPARD MICHAEL CHARLES3 citations61