Inventor
DENNISTOUN STUART M
US14 patents
⚠️ This page may combine multiple inventors who share the name “DENNISTOUN STUART M”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HALLIBURTON ENERGY SERV INC
13 patentsUS6227299B1May 8, 2001
Flapper valve with biasing flapper closure assembly
HALLIBURTON ENERGY SERV INC133 citations97
US6880641B2Apr 19, 2005
Subsurface safety valve and method for communicating hydraulic fluid therethrough
HALLIBURTON ENERGY SERV INC27 citations95
US6742595B2Jun 1, 2004
Subsurface safety valve lock out and communication tool and method for use of the same
HALLIBURTON ENERGY SERV INC29 citations95
US6659185B2Dec 9, 2003
Subsurface safety valve lock out and communication tool and method for use of the same
HALLIBURTON ENERGY SERV INC27 citations95
US6523614B2Feb 25, 2003
Subsurface safety valve lock out and communication tool and method for use of the same
HALLIBURTON ENERGY SERV INC29 citations95
US6196261B1Mar 6, 2001
Flapper valve assembly with seat having load bearing shoulder
HALLIBURTON ENERGY SERV INC51 citations95
US6152232ANov 28, 2000
Underbalanced well completion
HALLIBURTON ENERGY SERV INC102 citations93
US7775269B2Aug 17, 2010
Communication tool for accessing a non annular hydraulic chamber of a subsurface safety valve
HALLIBURTON ENERGY SERV INC11 citations92
US7249635B2Jul 31, 2007
Communication tool for accessing a non annular hydraulic chamber of a subsurface safety valve
HALLIBURTON ENERGY SERV INC11 citations92
US6953093B2Oct 11, 2005
Communication tool for accessing a non annular hydraulic chamber of a subsurface safety valve
HALLIBURTON ENERGY SERV INC14 citations92
US7032672B2Apr 25, 2006
Subsurface safety valve having a communication tool accessible non annular hydraulic chamber
HALLIBURTON ENERGY SERV INC10 citations81
US7475733B2Jan 13, 2009
Communication tool for accessing a non annular hydraulic chamber of a subsurface safety valve
HALLIBURTON ENERGY SERV INC6 citations73
US6289926B1Sep 18, 2001
Flapper valve assembly with seat having load bearing shoulder
HALLIBURTON ENERGY SERV INC8 citations73