Inventor
GAZDA IMRE I
US34 patents
⚠️ This page may combine multiple inventors who share the name “GAZDA IMRE I”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
OTIS ENG CO
19 patentsUS4583592AApr 22, 1986
Well test apparatus and methods
OTIS ENG CO63 citations96
US4842064AJun 27, 1989
Well testing apparatus and methods
OTIS ENG CO26 citations92
US4750560AJun 14, 1988
Device for releasably connecting well tools
OTIS ENG CO35 citations92
US4043392AAug 23, 1977
Well system
OTIS ENG CO50 citations92
US4069865AJan 24, 1978
Bottom hole fluid pressure communicating probe and locking mandrel
OTIS ENG CO35 citations91
US4149593AApr 17, 1979
Well testing tool system
OTIS ENG CO34 citations90
US4928761AMay 29, 1990
Two-way plugs for wells
OTIS ENG CO31 citations89
US4540048ASep 10, 1985
Locking device for well tools
OTIS ENG CO23 citations82
US4286661ASep 1, 1981
Equalizing valve for use in a well tool string
OTIS ENG CO20 citations82
US4007798AFeb 15, 1977
Hydraulic jar
OTIS ENG CO23 citations82
US3990511ANov 9, 1976
Well safety valve system
OTIS ENG CO25 citations82
US4023620AMay 17, 1977
No-go bomb hanger
OTIS ENG CO26 citations81
US4487261ADec 11, 1984
Well completion and testing system
OTIS ENG CO17 citations74
US4181344AJan 1, 1980
Running tool
OTIS ENG CO16 citations74
US4018277AApr 19, 1977
Selective bomb hanger
OTIS ENG CO9 citations74
US4035011AJul 12, 1977
Soft set running tool
OTIS ENG CO18 citations73
US5170845ADec 15, 1992
Subsurface safety valves and method and apparatus for their operation
OTIS ENG CO11 citations71
US4844160AJul 4, 1989
Parking mandrel
OTIS ENG CO3 citations63
US5205355AApr 27, 1993
Subsurface safety valves and method and apparatus for their operation
OTIS ENG CO5 citations60
HALLIBURTON ENERGY SERV INC
14 patentsUS6880641B2Apr 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
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
US6675891B2Jan 13, 2004
Apparatus and method for gravel packing a horizontal open hole production interval
HALLIBURTON ENERGY SERV INC61 citations92
US6070672AJun 6, 2000
Apparatus and method for downhole tool actuation
HALLIBURTON ENERGY SERV INC36 citations92
US6035880AMar 14, 2000
Pressure activated switch valve
HALLIBURTON ENERGY SERV INC31 citations92
US6267180B1Jul 31, 2001
Packer releasing tool and method for releasing a packer assembly from a wellbore
HALLIBURTON ENERGY SERV INC18 citations83
US6918440B2Jul 19, 2005
Testing drill packer
HALLIBURTON ENERGY SERV INC12 citations82
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