Inventor
HOSIE DAVID
US9 patents
Patents
9 patentsUS7086481B2Aug 8, 2006
Wellbore isolation apparatus, and method for tripping pipe during underbalanced drilling
WEATHERFORD LAMB98 citations97
US6837313B2Jan 4, 2005
Apparatus and method to reduce fluid pressure in a wellbore
WEATHERFORD LAMB130 citations97
US6834726B2Dec 28, 2004
Method and apparatus to reduce downhole surge pressure using hydrostatic valve
WEATHERFORD LAMB73 citations95
US6732804B2May 11, 2004
Dynamic mudcap drilling and well control system
WEATHERFORD LAMB103 citations95
US6736210B2May 18, 2004
Apparatus and methods for placing downhole tools in a wellbore
WEATHERFORD LAMB46 citations92
US7395877B2Jul 8, 2008
Apparatus and method to reduce fluid pressure in a wellbore
WEATHERFORD LAMB17 citations91
US6595289B2Jul 22, 2003
Method and apparatus for plugging a wellbore
WEATHERFORD LAMB53 citations89
US7000692B2Feb 21, 2006
Apparatus and methods for placing downhole tools in a wellbore
WEATHERFORD LAMB27 citations86
US7111692B2Sep 26, 2006
Apparatus and method to reduce fluid pressure in a wellbore
WEATHERFORD LAMB10 citations72