Inventor
BOYADJIEFF GEORGE
US15 patents
Patents
15 patentsUS6691801B2Feb 17, 2004
Load compensator for a pipe running tool
VARCO INT173 citations98
US6443241B1Sep 3, 2002
Pipe running tool
VARCO INT224 citations98
US6637526B2Oct 28, 2003
Offset elevator for a pipe running tool and a method of using a pipe running tool
VARCO INT148 citations97
US7591304B2Sep 22, 2009
Pipe running tool having wireless telemetry
VARCO INT62 citations95
US7096977B2Aug 29, 2006
Pipe running tool
VARCO INT66 citations95
US6938709B2Sep 6, 2005
Pipe running tool
VARCO INT48 citations94
US7108081B2Sep 19, 2006
Instrumented internal blowout preventer valve for measuring drill string drilling parameters
VARCO INT39 citations92
US6763887B2Jul 20, 2004
Drill pipe having an internally coated electrical pathway
VARCO INT16 citations92
US6588501B1Jul 8, 2003
Method and apparatus to reduce hydrostatic pressure in sub sea risers using buoyant spheres
VARCO INT29 citations92
US7699121B2Apr 20, 2010
Pipe running tool having a primary load path
VARCO INT41 citations91
US6776070B1Aug 17, 2004
Iron roughneck
VARCO INT43 citations86
US7510006B2Mar 31, 2009
Pipe running tool having a cement path
VARCO INT14 citations82
US7117944B2Oct 10, 2006
Drill pipe having an internally coated electrical pathway
VARCO INT5 citations73
US8037949B2Oct 18, 2011
Pipe running tool
VARCO INT3 citations61
US7753138B2Jul 13, 2010
Pipe running tool having internal gripper
VARCO INT5 citations61