| Patents for E21B 33 - Sealing or packing boreholes or wells (33,564) |
|---|
| 07/17/2002 | CN2500797Y Oil-water well testing sealing section |
| 07/17/2002 | CN2500796Y Oil field well-repairing rotating device |
| 07/17/2002 | CN2500795Y Lock ball type anti-impacting oil well head sealer |
| 07/17/2002 | CN2500794Y Top and bottom adjustable packer box |
| 07/17/2002 | CN2500793Y Follow-type centralising pumping polish rod well head sealer |
| 07/16/2002 | US6420976 Underwater hydrocarbon production systems |
| 07/16/2002 | US6419237 Spring compression seal |
| 07/16/2002 | US6419016 Methods of cementing in subterranean zones |
| 07/16/2002 | US6419015 Apparatus and a method for launching plugs |
| 07/16/2002 | US6418970 Accumulator apparatus, system and method |
| 07/16/2002 | CA2745733A1 Technique of forming expandable devices from cells that may be transitioned between a contracted state and an expanded state |
| 07/16/2002 | CA2303058C Blowout preventer protector and method of using same |
| 07/16/2002 | CA2246395C Seal electrical conductor arrangement for use with a well bore in hazardous areas |
| 07/11/2002 | US20020088622 Remotely installed pressure containing closure |
| 07/11/2002 | US20020088619 Cementing tool and method |
| 07/11/2002 | US20020088616 High temperature high pressure retrievable packer with barrel slip |
| 07/10/2002 | CN2499568Y Double controlling thermal packer |
| 07/10/2002 | CN2499567Y Downhole oscillation protector for pumping well |
| 07/09/2002 | US6415877 Subsea wellbore drilling system for reducing bottom hole pressure |
| 07/09/2002 | US6415861 Wellhead fluid collection system |
| 07/09/2002 | CA2353068C Cap for a well casing, and method to retrofit a well casing with a cap |
| 07/04/2002 | US20020084078 Method of operating an apparatus for radially expanding a tubular member |
| 07/04/2002 | US20020084069 Method and multi-purpose apparatus for dispensing and circulating fluid in wellbore casing |
| 07/03/2002 | EP1218621A1 Method and plugging material for reducing formation fluid migration in wells |
| 07/03/2002 | EP0943050B1 Blowout preventer control system |
| 07/03/2002 | CN2498324Y Lost circulation additives carrier |
| 07/03/2002 | CN2498323Y Embedded suspension diverter body on sealed hole top |
| 07/03/2002 | CN1356452A Packer for high-temp thermal recovery |
| 07/02/2002 | US6414905 Method and apparatus for communicating coded messages in a wellbore |
| 07/02/2002 | US6412823 Rotating connector with compensating unit |
| 07/02/2002 | US6412783 Self aligning stuffing box for pumpjacks |
| 07/02/2002 | US6412554 Wellbore circulation system |
| 06/27/2002 | US20020079108 System for accessing oil wells with compliant guide and coiled tubing |
| 06/27/2002 | US20020079106 Procedures and equipment for profiling and jointing of pipes |
| 06/27/2002 | US20020079101 Hanging liners by pipe expansion |
| 06/26/2002 | EP1217166A1 Method and apparatus for drilling and completing a well |
| 06/26/2002 | EP1216342A1 Subsea lubricator device and methods of circulating fluids in a subsea lubricator |
| 06/26/2002 | CN2497040Y Polish rod packing |
| 06/25/2002 | US6409176 Wellhead housing seal assembly with backup feature |
| 06/25/2002 | US6408949 Device for use for mounting and alignment of a christmas tree on a wellhead |
| 06/25/2002 | US6408948 Tubing handling for subsea oilfield tubing operations |
| 06/25/2002 | US6408947 Subsea connection apparatus |
| 06/25/2002 | US6408945 Tool and method for removing excess cement from the top of a liner after hanging and cementing thereof |
| 06/25/2002 | CA2189610C Well treatment fluid |
| 06/20/2002 | US20020074166 Method and apparatus for drilling and completing a well |
| 06/20/2002 | US20020074135 System for accessing oil wells with compliant guide and coiled tubing |
| 06/20/2002 | US20020074134 Apparatus for actuating an annular piston |
| 06/20/2002 | US20020074131 Stripper/packer |
| 06/20/2002 | US20020074130 Apparatus for radially expanding a tubular member |
| 06/20/2002 | US20020074126 Wellhead system comprising a sliding sleeve seal |
| 06/20/2002 | US20020074124 Concentric tubing completion system |
| 06/20/2002 | US20020074123 Riser isolation tool |
| 06/20/2002 | US20020074116 Downhole packer |
| 06/19/2002 | CN2495808Y symmetric and composite perforating and sand-proof device for oil well |
| 06/19/2002 | CN2495803Y Sealing type well flushing able packer |
| 06/19/2002 | CN2495802Y Anti-theft scavenging joint for oil prodn. well |
| 06/19/2002 | CN1354817A Method and system for moving equipment into and through conduit |
| 06/18/2002 | US6406028 Seal stack |
| 06/18/2002 | CA2246196C Polish rod protector sleeve |
| 06/13/2002 | WO2002046573A1 High temperature and pressure packer |
| 06/13/2002 | WO2002046571A1 Wellbore fluid recovery system & method |
| 06/13/2002 | WO2002046564A2 Boring apparatus |
| 06/13/2002 | WO2002028560A3 Method and apparatus for expansion sealing concentric tubular structures |
| 06/13/2002 | US20020070545 Drilling quick connectors |
| 06/13/2002 | US20020070503 High temperature and pressure element system |
| 06/13/2002 | US20020070034 Packer |
| 06/13/2002 | US20020070033 System for accessing oil wells with compliant guide and coiled tubing |
| 06/13/2002 | US20020070030 Wellhead with improved ESP cable pack-off and method |
| 06/13/2002 | US20020070029 Wellbore fluid recovery system and method |
| 06/13/2002 | US20020070026 Light-intervention subsea tree system |
| 06/13/2002 | US20020070025 Multiple bore christmas tree outlet |
| 06/13/2002 | US20020070024 Mounting system for offshore structural members subjected to dynamic loadings |
| 06/13/2002 | US20020070016 Wireline centralisation apparatus and method |
| 06/13/2002 | US20020070014 Rotating blowout preventer with independent cooling circuits and thrust bearing |
| 06/12/2002 | EP1212515A2 Methods and associated apparatus for downhole data retrieval, monitoring and tool actuation |
| 06/12/2002 | EP0934500B1 Stemming arrangement and method for blast holes |
| 06/11/2002 | US6401827 Tubing hanger running tool |
| 06/11/2002 | US6401826 Lubricator for underbalanced drilling |
| 06/11/2002 | US6401815 Apparatus and method for connecting casing to lateral casing using thermoset plastic molding |
| 06/11/2002 | US6401814 Method of locating a cementing plug in a subterranean wall |
| 06/11/2002 | CA2246393C Seal electrical conductor arrangement for use with a well bore in hazardous areas |
| 06/06/2002 | WO2002044521A1 Wellhead assembly for injectiong a fluid |
| 06/06/2002 | WO2002044520A2 Spool for injecting a fluid between casings |
| 06/06/2002 | WO2002044517A1 Fluid mixing system |
| 06/06/2002 | WO2002044516A1 Wellhead assembly for accessing an annulus in a well and a method for its use |
| 06/06/2002 | US20020066875 Valve element |
| 06/06/2002 | US20020066596 Subsea mud pump and control system |
| 06/06/2002 | US20020066577 Well reference apparatus and method |
| 06/06/2002 | US20020066572 Pump systems and methods |
| 06/06/2002 | US20020066564 Method and multi-purpose apparatus for dispensing and circulating fluid in wellbore casing |
| 06/06/2002 | US20020066562 Automatic pressure seal around wireline when pack off head is located in area that is inaccessible to manual or hydraulic operation for use during oil field service operations; pack off rubber between a pack off bushing and a piston |
| 06/06/2002 | US20020066559 Bore Selector |
| 06/06/2002 | US20020066557 Tubing hanger landing string with blowout preventer operated release mechanism |
| 06/06/2002 | US20020066556 Well having a self-contained inter vention system |
| 06/06/2002 | US20020066309 Monitoring of downhole parameters and tools utilizing fiber optics |
| 06/05/2002 | EP1210498A1 Smart shuttles to complete oil and gas wells |
| 06/04/2002 | US6397948 Shearing arrangement for subsea umbilicals |
| 06/04/2002 | US6397946 Closed-loop system to compete oil and gas wells closed-loop system to complete oil and gas wells c |
| 05/30/2002 | WO2002042602A1 Apparatus for the connection of hydraulic conduits |
| 05/30/2002 | WO2002023006A3 Concentric tubing completion system |