Inventor
WORRALL ROBERT NICHOLAS
NL14 patents
⚠️ This page may combine multiple inventors who share the name “WORRALL ROBERT NICHOLAS”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
SHELL OIL CO
10 patentsUS7640965B2Jan 5, 2010
Creating a well abandonment plug
SHELL OIL CO53 citations97
US7152657B2Dec 26, 2006
In-situ casting of well equipment
SHELL OIL CO112 citations97
US7207398B2Apr 24, 2007
Steerable rotary drill bit assembly with pilot bit
SHELL OIL CO59 citations95
US7527095B2May 5, 2009
Method of creating a zonal isolation in an underground wellbore
SHELL OIL CO76 citations94
US6619402B1Sep 16, 2003
System for enhancing fluid flow in a well
SHELL OIL CO80 citations92
US7281592B2Oct 16, 2007
Injecting a fluid into a borehole ahead of the bit
SHELL OIL CO52 citations90
US7282663B2Oct 16, 2007
Forge welding process
SHELL OIL CO21 citations89
US6380476B1Apr 30, 2002
Generating electric power in a wellbore
SHELL OIL CO16 citations83
US7810583B2Oct 12, 2010
Drilling systems and methods
SHELL OIL CO15 citations80
US6464001B1Oct 15, 2002
Multilateral wellbore system
SHELL OIL CO9 citations73