| Patents for E21B 33 - Sealing or packing boreholes or wells (33,564) |
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| 10/09/2002 | EP1247000A2 Subsea completion annulus monitoring and bleed down system |
| 10/09/2002 | EP1246999A1 Telescoping tool |
| 10/09/2002 | CN2515420Y Packer |
| 10/09/2002 | CN1092279C System, vessel, seabed installation and method for producing oil or gas |
| 10/09/2002 | CN1092278C Subsea module |
| 10/09/2002 | CN1092277C Subsea well apparatus |
| 10/08/2002 | US6460621 Light-intervention subsea tree system |
| 10/08/2002 | US6460619 Whereby earlier created fractures are not negatively affected by the creation of later fractures; sealing a first section of the wellbore from the remainder of the wellbore |
| 10/08/2002 | US6460617 Drillable casing brush |
| 10/03/2002 | WO2002077496A2 Metal-to-metal seal with soft metal insert |
| 10/03/2002 | WO2002077411A1 Creation of a downhole seal |
| 10/03/2002 | WO2002077410A1 Liquid separation device |
| 10/03/2002 | WO2002059458A3 Instrumented cementing plug and system |
| 10/03/2002 | US20020140184 Metal-to-metal seal with soft metal insert |
| 10/03/2002 | US20020139541 Cup packer |
| 10/03/2002 | US20020139540 Method and apparatus for downhole tubular expansion |
| 10/03/2002 | US20020139536 Method for preventing critical annular pressure buildup |
| 10/03/2002 | US20020139535 Remote sub-sea lubricator |
| 10/03/2002 | US20020139529 Wiper plug delivery apparatus |
| 10/03/2002 | US20020139422 Multiport gate valve assembly |
| 10/03/2002 | CA2442095A1 Metal-to-metal seal with soft metal insert |
| 10/02/2002 | EP1042584B1 A method and a tool for treating the wall of a critical zone in a borehole |
| 10/02/2002 | CN2514113Y Well washing packer for water injection well |
| 10/02/2002 | CN2514112Y Packer capable of preventing sanding in fracturing |
| 10/01/2002 | US6458233 Method for manufacturing a wall thickness program into an elastomeric tubular component for incorporation into a packing device for use in a subterranean well |
| 10/01/2002 | US6457533 Downhole tubing |
| 10/01/2002 | US6457532 Procedures and equipment for profiling and jointing of pipes |
| 10/01/2002 | US6457530 Wellhead production pumping tree |
| 10/01/2002 | US6457529 Apparatus and method for returning drilling fluid from a subsea wellbore |
| 10/01/2002 | US6457528 Method for preventing critical annular pressure buildup |
| 10/01/2002 | US6457526 Sub sea bottom hole assembly change out system and method |
| 10/01/2002 | US6457517 Composite landing collar for cementing operation |
| 09/30/2002 | CA2379297A1 Improved cup packer |
| 09/27/2002 | CA2377347A1 Cementing spacers for improved well cementation |
| 09/26/2002 | WO2002075107A1 Tubing seal |
| 09/26/2002 | WO2002075103A1 Cover and method of making same |
| 09/26/2002 | WO2002075098A2 Tension latching system |
| 09/26/2002 | US20020136904 Frangible rupture disk for use in blocking fluid flow, use such as a well casing, a well tubing string or other conduits within subterranean boreholes; temporary and controllable fluid blockage |
| 09/26/2002 | US20020134556 Sample extraction system for boreholes |
| 09/26/2002 | US20020134555 Tong for wellbore operations |
| 09/26/2002 | US20020134552 Deep water intervention system |
| 09/26/2002 | US20020134548 Wellhead production pumping tree |
| 09/25/2002 | EP1243746A1 Method and multi-purpose apparatus for dispensing and circulating fluid in wellbore casing |
| 09/25/2002 | CN2512903Y Side drilling well blocking device |
| 09/25/2002 | CN2512902Y High pressure packing one-step filling tool |
| 09/25/2002 | CN2512901Y Hydraulic delay packer |
| 09/25/2002 | CN2512900Y Wate well operation without laying spray tube column |
| 09/25/2002 | CN2512899Y High pressure oil-gas water well operation device with pressure |
| 09/24/2002 | US6454015 Shearing gate valve |
| 09/24/2002 | US6454011 Method and system for moving equipment into and through a conduit |
| 09/24/2002 | US6454004 Cementing casing strings in deep water offshore wells |
| 09/24/2002 | US6454001 Method and apparatus for plugging wells |
| 09/24/2002 | US6453944 Multiport gate valve assembly |
| 09/24/2002 | CA2217939C Well cementing plug assemblies and methods |
| 09/19/2002 | WO2002072999A1 Power connection to and/or control of wellhead trees |
| 09/19/2002 | US20020129941 Automatic chemical stick loader for wells and method of loading |
| 09/19/2002 | US20020129939 Composition and method for sealing an annular space between a well bore and a casing |
| 09/18/2002 | EP1029148B1 Plug for use in wellbore operations and apparatus for launching said plug |
| 09/18/2002 | CN2511787Y Packer |
| 09/18/2002 | CN2511786Y Anti-theft oil well test apparatus |
| 09/18/2002 | CN1091130C Composite acid-soluble drilling plugging agent |
| 09/17/2002 | US6450507 Water ingress seal for tapered seals |
| 09/17/2002 | US6450262 Riser isolation tool |
| 09/17/2002 | CA2231399C Tool for blocking axial flow in gravel-packed well annulus |
| 09/17/2002 | CA2104695C Method for regaining mud circulation in operating well and device for its embodiment |
| 09/12/2002 | US20020126021 Permanent downhole, wireless, two-way telemetry backbone using redundant repeaters |
| 09/12/2002 | US20020125005 Tubing conveyed fracturing tool and method |
| 09/11/2002 | EP1239113A2 Method and apparatus for well testing |
| 09/11/2002 | EP1238952A1 Well cement composition for deep water offshore wells |
| 09/11/2002 | EP1238234A2 An energy transfer system and a method for providing energy transfer services |
| 09/11/2002 | CN2510619Y Offset-following packing box |
| 09/11/2002 | CN1369032A Drilling and completion system for multilateral wells |
| 09/10/2002 | US6446736 Non-rotating sensor assembly for measurement-while-drilling applications |
| 09/10/2002 | US6446729 Sand control method and apparatus |
| 09/10/2002 | US6446725 Rotating casing assembly and method |
| 09/10/2002 | US6446724 Hanging liners by pipe expansion |
| 09/10/2002 | US6446717 Core-containing sealing assembly |
| 09/10/2002 | US6446323 Profile formation |
| 09/06/2002 | WO2002037005B1 Manual control device |
| 09/06/2002 | WO2001004456A9 Lubricator for underbalanced drilling |
| 09/05/2002 | US20020121743 Seal structure for downhole tool |
| 09/05/2002 | US20020121380 Collet-cone slip system for releasably securing well tools |
| 09/05/2002 | US20020121372 Isolation of subterranean zones |
| 09/05/2002 | US20020121368 Casing hanger system with capture feature |
| 09/05/2002 | US20020121367 Well tubing rotator |
| 09/05/2002 | US20020121160 Granular particle gripping surface |
| 09/04/2002 | CN2509317Y Cementing rubber plug for oil well plugging operation |
| 09/04/2002 | CN2509316Y Pressure spring type temperature control hot recovering packer |
| 09/04/2002 | CN2509315Y Telescopic antiover-flow pipe on drilling well head |
| 09/04/2002 | CN1367768A Low-density and Low-porosity cementing slurry for oil wells or the like |
| 09/03/2002 | US6443240 Dual riser assembly, deep water drilling method and apparatus |
| 09/03/2002 | CA2253960C A device for sealing charges in shot holes and a method for using the same |
| 08/29/2002 | WO2002044520A3 Spool for injecting a fluid between casings |
| 08/29/2002 | US20020117309 Hydraulically activated selective circulating/reverse circulating packer assembly |
| 08/29/2002 | US20020117308 Method and apparatus for inserting a tubing hanger into a live well |
| 08/29/2002 | US20020117305 Cuttings injection and annulus remediation systems for wellheads |
| 08/29/2002 | US20020117298 Wellhead lsolation tool |
| 08/28/2002 | EP1234094A1 Creating multiple fractures in an earth formation |
| 08/28/2002 | EP1234092A2 Ceramic components for high pressure oil wells |
| 08/28/2002 | CN2507991Y Oil (gas) production wellhead protector |