| Patents for E21B 33 - Sealing or packing boreholes or wells (33,564) |
|---|
| 04/17/2002 | CN1344696A Selectively penetrant cement stone |
| 04/16/2002 | US6371487 Gimbal and seal for the drivehead of a downhole rotary pump |
| 04/16/2002 | US6371203 Method of creating a wellbore in an underground formation |
| 04/11/2002 | WO2002029208A1 Method and system for increasing tubing resistance to pressure |
| 04/11/2002 | WO2002029207A1 Method and system for tubing a borehole in single diameter |
| 04/11/2002 | WO2002029204A1 Bentonite nodules |
| 04/11/2002 | WO2002029203A1 Well packer and method |
| 04/11/2002 | WO2002029202A1 Control of hydrocarbon wells |
| 04/11/2002 | WO2002028560A2 Method and apparatus for expansion sealing concentric tubular structures |
| 04/11/2002 | US20020040787 Forming a wellbore casing while simultaneously drilling a wellbore |
| 04/11/2002 | US20020040786 Control of hydrocarbon wells |
| 04/11/2002 | US20020040783 Subsea intervention system |
| 04/11/2002 | US20020040782 Subsea intervention |
| 04/11/2002 | CA2430243A1 Method and system for increasing tubing resistance to pressure |
| 04/11/2002 | CA2430240A1 Method and system for tubing a borehole in single diameter |
| 04/10/2002 | EP1194497A1 Water based wellbore fluids |
| 04/10/2002 | CN2485414Y Self extending packer for hot production |
| 04/10/2002 | CN2485413Y Tester for multi-stage cementing downhole packer |
| 04/10/2002 | CN2485412Y Blow out preventer on hole top |
| 04/10/2002 | CN1082603C Swivel joint device |
| 04/09/2002 | US6367804 Variable bore ram packer for tapered tubular members in a ram type blowout preventer |
| 04/09/2002 | US6367566 Down hole, hydrodynamic well control, blowout prevention |
| 04/09/2002 | US6367558 Metal-to-metal casing packoff |
| 04/09/2002 | US6367554 Riser method and apparatus |
| 04/09/2002 | US6367553 Method and apparatus for controlling well pressure while undergoing wireline operations on subsea blowout preventers |
| 04/09/2002 | US6367551 Monobore riser |
| 04/09/2002 | US6367546 Ceramic components for high pressure oil wells |
| 04/04/2002 | WO2002027137A1 Well sealing method and apparatus |
| 04/04/2002 | WO2002002906A3 Drillable bridge plug |
| 04/04/2002 | WO2002002905B1 Packer and method for fixation thereof in a well |
| 04/04/2002 | WO2001098623B1 Radial expansion of tubular members |
| 04/03/2002 | EP1193229A2 Method of cementing in subterranean zone |
| 04/03/2002 | EP0993540B1 Device and method for creating ramifications in a bore hole |
| 04/03/2002 | CN2484404Y External-pressure soft-cloth thermal-stress compensator |
| 04/03/2002 | CN2484403Y Sliding-seat shut-in device for well |
| 04/03/2002 | CN1342829A Edge water scheduling technique for oil field using edge water to displace oil |
| 04/03/2002 | CN1082129C Technology for cementing well and its relative tool |
| 04/02/2002 | US6365647 Process for preparing a polymeric latex |
| 04/02/2002 | US6364024 Blowout preventer protector and method of using same |
| 04/02/2002 | US6364021 Well management system and method of operation |
| 04/02/2002 | US6364012 Drill pipe handling apparatus |
| 04/02/2002 | CA2215422C Process and seal for minimizing interzonal migration in boreholes |
| 04/02/2002 | CA2049686C Inflatable packing device and method of sealing |
| 03/29/2002 | CA2357560A1 Methods of cementing in subterranean zones |
| 03/28/2002 | WO2002025059A1 Method and apparatus for completing wells with expanding packers for casing annulus and formation isolation |
| 03/28/2002 | WO2002025056A1 Method and apparatus for cementing wells |
| 03/28/2002 | WO2001080650A3 Packer, setting tool for a packer and method for setting a packer |
| 03/28/2002 | WO2001073254A3 Coupling means for controls bridge through a tubing head |
| 03/28/2002 | US20020036085 Toroidal choke inductor for wireless communication and control |
| 03/27/2002 | EP1097287A4 Floating spar for supporting production risers |
| 03/27/2002 | CN1081719C Method for consolidation of sand |
| 03/26/2002 | US6360822 Casing annulus monitoring apparatus and method |
| 03/26/2002 | US6360769 Multiple plug container |
| 03/26/2002 | CA2227399C Wellhead equipment that use polymer sealing elements to seal off well pressure |
| 03/26/2002 | CA2055555C Hydraulic packoff and casing hanger installation tool |
| 03/26/2002 | CA2023212C Variable bore packer for a ram type blowout preventer |
| 03/21/2002 | WO2002023007A1 Liner hanger with sliding sleeve valve |
| 03/21/2002 | WO2002023006A2 Concentric tubing completion system |
| 03/21/2002 | WO2001073260A3 Multiport gate valve assembly |
| 03/21/2002 | WO2001061148A3 Filter cake cleanup and gravel pack methods for oil based or water based drilling fluids |
| 03/21/2002 | US20020033261 Downhole apparatus |
| 03/20/2002 | CN1081283C Drilling rotary blowout preventer |
| 03/19/2002 | US6359569 Methods and associated apparatus for downhole data retrieval, monitoring and tool actuation |
| 03/19/2002 | US6357529 Subsea completion system with integral valves |
| 03/19/2002 | CA2214786C Flow meter |
| 03/19/2002 | CA2159659C Torque anchor |
| 03/14/2002 | WO2002020941A1 Well packing |
| 03/14/2002 | WO2002020938A1 Intervention module for a well |
| 03/14/2002 | WO2001088335B1 Dual purpose device |
| 03/14/2002 | WO2001060429A3 Vestibular irrigator test system (vits) |
| 03/14/2002 | US20020030325 Ribbed sealing element and method of use |
| 03/14/2002 | US20020029890 Isolation valve |
| 03/14/2002 | US20020029887 Tubing hanger shuttle valve |
| 03/14/2002 | US20020029880 Drillable bridge plug |
| 03/14/2002 | US20020029879 Method and multi-purpose apparatus for dispensing and circulating fluid in wellbore casing |
| 03/13/2002 | EP1186743A2 Wireline centralisation apparatus and method |
| 03/13/2002 | EP1042585B1 Method and apparatus for cementing casing in a wellbore |
| 03/13/2002 | CN2481844Y Integrative temp. -controlled short circuit heat-washing paraffin removal unit |
| 03/13/2002 | CN2481843Y Non-location oil pipe plugging device |
| 03/13/2002 | CN1080814C Electric cement mortar treater |
| 03/13/2002 | CA2356203A1 Pressurized system for protecting signal transfer capability at a subsurface location |
| 03/12/2002 | US6354385 Rotary drilling head assembly |
| 03/12/2002 | US6354380 Apparatus for guiding wireline |
| 03/12/2002 | US6354375 Lateral well tie-back method and apparatus |
| 03/12/2002 | US6354372 Subterranean well tool and slip assembly |
| 03/12/2002 | CA2250654C Wiper device for stripping drilling fluid from rig drill string |
| 03/07/2002 | WO2002018740A1 Improved method for drilling multi-lateral wells with reduced under-reaming and related device |
| 03/07/2002 | WO2002018738A1 Improved method for drilling multi-lateral wells and related device |
| 03/07/2002 | WO2001069034A3 Wellbore circulation system, kelly bushing, kelly and tong |
| 03/07/2002 | WO2001066275A9 Composite particles and methods of their use |
| 03/07/2002 | US20020026958 Cementing head |
| 03/06/2002 | EP0852657A4 Tool for blocking axial flow in gravel-packed well annulus |
| 03/06/2002 | CN2480542Y No-killing well working equipment |
| 03/05/2002 | US6352120 Packer insert for sealing on multiple items in the wellbore |
| 03/05/2002 | US6352114 Deep ocean riser positioning system and method of running casing |
| 02/28/2002 | WO2002016734A1 Modular seabed processing system |
| 02/28/2002 | WO2002016729A1 Device by an expansion packer element |
| 02/28/2002 | US20020023755 Method of removing wellhead assemblies |
| 02/28/2002 | US20020023754 Method for drilling multilateral wells and related device |
| 02/28/2002 | US20020023753 Method for drilling multilateral wells with reduced under-reaming and related device |