Inventor
SIZER PHILLIP S
US18 patents
⚠️ This page may combine multiple inventors who share the name “SIZER PHILLIP S”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
OTIS ENG CO
15 patentsUS4886114ADec 12, 1989
Electric surface controlled subsurface valve system
OTIS ENG CO81 citations96
US4583592AApr 22, 1986
Well test apparatus and methods
OTIS ENG CO63 citations96
US4515220AMay 7, 1985
Apparatus and method for rotating coil tubing in a well
OTIS ENG CO104 citations96
US5275038AJan 4, 1994
Downhole reeled tubing inspection system with fiberoptic cable
OTIS ENG CO93 citations95
US4730677AMar 15, 1988
Method and system for maintenance and servicing of subsea wells
OTIS ENG CO165 citations95
US4723606AFeb 9, 1988
Surface controlled subsurface safety valve
OTIS ENG CO64 citations95
US5191173AMar 2, 1993
Electrical cable in reeled tubing
OTIS ENG CO104 citations92
US4251176AFeb 17, 1981
Well tubing handling apparatus
OTIS ENG CO51 citations92
US4108257AAug 22, 1978
Apparatus for controlling a well during drilling operations
OTIS ENG CO38 citations92
US4449587AMay 22, 1984
Surface controlled subsurface safety valves
OTIS ENG CO63 citations89
US4258794AMar 31, 1981
Underwater completion habitat
OTIS ENG CO34 citations88
US3999610ADec 28, 1976
Pipe snubbing method and apparatus
OTIS ENG CO37 citations87
US4026363AMay 31, 1977
Apparatus and method for performing a desired operation at a specified location in a well
OTIS ENG CO28 citations82
US5170845ADec 15, 1992
Subsurface safety valves and method and apparatus for their operation
OTIS ENG CO11 citations71
US5205355AApr 27, 1993
Subsurface safety valves and method and apparatus for their operation
OTIS ENG CO5 citations60