Assignee
CAMCO INT
US226 patents
Top patents by PatentIndex Score
US6247536B1Jun 19, 2001
Downhole multiplexer and related methods
CAMCO INT148 citations99
US6070608AJun 6, 2000
Variable orifice gas lift valve for high flow rates with detachable power source and method of using
CAMCO INT113 citations99
US5394951AMar 7, 1995
Bottom hole drilling assembly
CAMCO INT167 citations99
US6325143B1Dec 4, 2001
Dual electric submergible pumping system installation to simultaneously move fluid with respect to two or more subterranean zones
CAMCO INT86 citations98
US6296061B1Oct 2, 2001
Pilot-operated pressure-equalizing mechanism for subsurface valve
CAMCO INT86 citations98
US6068015AMay 30, 2000
Sidepocket mandrel with orienting feature
CAMCO INT112 citations98
US5950742ASep 14, 1999
Methods and related equipment for rotary drilling
CAMCO INT99 citations98
US5469927ANov 28, 1995
Cutting elements for rotary drill bits
CAMCO INT186 citations98
US5411085AMay 2, 1995
Spoolable coiled tubing completion system
CAMCO INT177 citations98
US5316094AMay 31, 1994
Well orienting tool and/or thruster
CAMCO INT121 citations98
US6357530B1Mar 19, 2002
System and method of utilizing an electric submergible pumping system in the production of high gas to liquid ratio fluids
CAMCO INT154 citations97
US6213202B1Apr 10, 2001
Separable connector for coil tubing deployed systems
CAMCO INT86 citations97
US6045333AApr 4, 2000
Method and apparatus for controlling a submergible pumping system
CAMCO INT161 citations97
US5425420AJun 20, 1995
Spoolable coiled tubing completion system
CAMCO INT62 citations97
US5161898ANov 10, 1992
Aluminide coated bearing elements for roller cutter drill bits
CAMCO INT121 citations97
US6491102B2Dec 10, 2002
Downhole multiplexer and related methods
CAMCO INT53 citations96
US6388353B1May 14, 2002
Elongated permanent magnet synchronous motor
CAMCO INT121 citations96
US6307290B1Oct 23, 2001
Piston motor protector, and motor and pumping system incorporating the same
CAMCO INT54 citations96
US6237683B1May 29, 2001
Wellbore flow control device
CAMCO INT41 citations96
US6237693B1May 29, 2001
Failsafe safety valve and method
CAMCO INT57 citations96
US6190050B1Feb 20, 2001
System and method for preparing wear-resistant bearing surfaces
CAMCO INT82 citations96
US6148843ANov 21, 2000
Variable orifice gas lift valve for high flow rates with detachable power source and method of using
CAMCO INT62 citations96
USRE36880ESep 26, 2000
Spoolable flexible hydraulic controlled coiled tubing safety valve
CAMCO INT43 citations96
US6079497AJun 27, 2000
Pressure equalizing safety valve for subterranean wells
CAMCO INT67 citations96
US6068444AMay 30, 2000
Submergible centrifugal pump having improved diffuser bushings
CAMCO INT66 citations96
US6026897AFeb 22, 2000
Communication conduit in a well tool
CAMCO INT54 citations96
USRE36525EJan 25, 2000
Spoolable flexible hydraulically set, straight pull release well packer
CAMCO INT50 citations96
US6000468ADec 14, 1999
Method and apparatus for the downhole metering and control of fluids produced from wells
CAMCO INT56 citations96
US5996687ADec 7, 1999
Full bore variable flow control device
CAMCO INT73 citations96
US5979559ANov 9, 1999
Apparatus and method for producing a gravity separated well
CAMCO INT57 citations96
US5918669AJul 6, 1999
Method and apparatus for remote control of multilateral wells
CAMCO INT40 citations96
US5823263AOct 20, 1998
Method and apparatus for remote control of multilateral wells
CAMCO INT36 citations96
US5816346AOct 6, 1998
Rotary drill bits and methods of designing such drill bits
CAMCO INT75 citations96
US5488992AFeb 6, 1996
Spoolable flexible sliding sleeve
CAMCO INT60 citations96
US5483988AJan 16, 1996
Spoolable coiled tubing mandrel and gas lift valves
CAMCO INT62 citations96
US5469878ANov 28, 1995
Coiled tubing concentric gas lift valve assembly
CAMCO INT64 citations96
US5465793ANov 14, 1995
Spoolable flexible hydraulic controlled annular control valve
CAMCO INT60 citations96
US5465787ANov 14, 1995
Fluid circulation apparatus
CAMCO INT77 citations96
US5423383AJun 13, 1995
Spoolable flexible hydraulic controlled coiled tubing safety valve
CAMCO INT52 citations96
US5411081AMay 2, 1995
Spoolable flexible hydraulically set, straight pull release well packer
CAMCO INT57 citations96
US5314032AMay 24, 1994
Movable joint bent sub
CAMCO INT68 citations96
US5311939AMay 17, 1994
Multiple use well packer
CAMCO INT63 citations96
US5310004AMay 10, 1994
Fail safe gas bias safety valve
CAMCO INT66 citations96
US5236047AAug 17, 1993
Electrically operated well completion apparatus and method
CAMCO INT42 citations96
US5230383AJul 27, 1993
Electrically actuated well annulus safety valve
CAMCO INT51 citations96
US5207272AMay 4, 1993
Electrically actuated well packer
CAMCO INT47 citations96
US5167284ADec 1, 1992
Selective hydraulic lock-out well safety valve and method
CAMCO INT65 citations96
US5058682AOct 22, 1991
Equalizing means for a subsurface well safety valve
CAMCO INT56 citations96
US6298917B1Oct 9, 2001
Coiled tubing system for combination with a submergible pump
CAMCO INT77 citations95
US6179269B1Jan 30, 2001
Method and apparatus for installing a cable into coiled tubing
CAMCO INT52 citations95
Showing the top 50 of 226 patents by PatentIndex Score.