Inventor
RUNIA DOUWE JOHANNES
NL17 patents
⚠️ This page may combine multiple inventors who share the name “RUNIA DOUWE JOHANNES”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
SHELL OIL CO
14 patentsUS6269891B1Aug 7, 2001
Through-drill string conveyed logging system
SHELL OIL CO60 citations96
US6119777ASep 19, 2000
Logging method
SHELL OIL CO58 citations96
US7207398B2Apr 24, 2007
Steerable rotary drill bit assembly with pilot bit
SHELL OIL CO59 citations95
US7140454B2Nov 28, 2006
Well drilling bit
SHELL OIL CO21 citations92
US7134493B2Nov 14, 2006
Logging system for use in a wellbore
SHELL OIL CO41 citations92
US7059410B2Jun 13, 2006
Method and system for reducing longitudinal fluid flow around a permeable well
SHELL OIL CO110 citations92
US7281592B2Oct 16, 2007
Injecting a fluid into a borehole ahead of the bit
SHELL OIL CO52 citations90
US7287609B2Oct 30, 2007
Drilling a borehole
SHELL OIL CO30 citations89
US7188672B2Mar 13, 2007
Well string assembly
SHELL OIL CO27 citations86
US6799634B2Oct 5, 2004
Tracer release method for monitoring fluid flow in a well
SHELL OIL CO47 citations86
US7296639B2Nov 20, 2007
Wellstring assembly
SHELL OIL CO33 citations84
US6702041B2Mar 9, 2004
Combined logging and drilling system
SHELL OIL CO17 citations84
US9932811B2Apr 3, 2018
Method and system for damping vibrations in a tool string system
SHELL OIL CO9 citations81
US6181132B1Jan 30, 2001
NMR logging assembly
SHELL OIL CO10 citations73
RUNIA DOUWE JOHANNES
3 patentsUS8439131B2May 14, 2013
Drill bit assembly and method of performing an operation in a wellbore
RUNIA DOUWE JOHANNES8 citations82
US9074436B2Jul 7, 2015
Methods for installing sensors in a borehole
RUNIA DOUWE JOHANNES2 citations60
US8668031B2Mar 11, 2014
Drill bit and method for inserting, expanding, collapsing, and retrieving drill bit
RUNIA DOUWE JOHANNES1 citations50