| Patents for E21B 33 - Sealing or packing boreholes or wells (33,564) |
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| 04/27/2004 | US6725917 Downhole apparatus |
| 04/22/2004 | WO2004033848A1 A riser and method of installing same |
| 04/22/2004 | WO2004033844A2 System and method for installation and use of devices in microboreholes |
| 04/22/2004 | WO2003016671A3 High power umbilicals for subterranean electric drilling machines and remotely operated vehicles |
| 04/22/2004 | US20040074649 Method of drilling and operating a subsea well |
| 04/22/2004 | US20040074647 Apparatus for, and method of, landing items at a well location |
| 04/22/2004 | US20040074645 Process and system for effective and accurate foam cement generation and placement |
| 04/22/2004 | US20040074636 Flow completion system |
| 04/22/2004 | US20040074635 Central circulation completion system |
| 04/22/2004 | DE19604518B4 Injektionspacker für Bohrlochverschlüsse in Mauerwerken Injection packers for blowout preventers in masonry |
| 04/22/2004 | DE10347251A1 Vorrichtung zur Verwendung bei der Steuerung und/oder Überprüfung eines Unterwasser-Kohlenwasserstoff-Gewinnungssystems Apparatus for use in controlling and / or verification of an underwater hydrocarbon recovery system |
| 04/21/2004 | EP1105620B1 Hydraulic well control system |
| 04/21/2004 | CN1146696C Sealing device and its sealing method |
| 04/20/2004 | US6722433 Methods of sealing expandable pipe in well bores and sealing compositions |
| 04/20/2004 | US6722426 Gasket with multiple sealing surfaces |
| 04/20/2004 | US6722105 Method of making an inflatable gas bag for use as a borehole plug |
| 04/20/2004 | CA2199301C Dual bore annulus access valve |
| 04/15/2004 | WO2004031532A1 Mono-trip well completion |
| 04/15/2004 | WO2004031529A2 Cementing through a side pocket mandrel |
| 04/15/2004 | WO2004013447A3 Subsea well production system |
| 04/15/2004 | US20040071557 Well jet device |
| 04/15/2004 | US20040069504 Downhole activatable annular seal assembly |
| 04/15/2004 | US20040069503 Downhole sealing tools and method of use |
| 04/15/2004 | US20040069502 High expansion packer |
| 04/15/2004 | US20040069496 Wellbore isolation apparatus, and method for tripping pipe during underbalanced drilling |
| 04/15/2004 | US20040069495 Annulus pressure control system for subsea wells |
| 04/15/2004 | US20040069493 One-trip wellhead installation systems and methods |
| 04/15/2004 | US20040069492 Controlling and/or testing a hydrocarbon production system |
| 04/15/2004 | US20040069487 System and method for installation and use of devices in microboreholes |
| 04/15/2004 | US20040069485 Downhole sealing tools and method of use |
| 04/14/2004 | EP1408195A1 High expansion packer |
| 04/14/2004 | EP1407113A1 Wellbore system with annular seal member |
| 04/14/2004 | EP0864031B1 Tubing injection system for oilfield operations |
| 04/14/2004 | CN2611584Y Self-filling large calibre cementing float shoe |
| 04/14/2004 | CN2611583Y Cased variale well steam injection packer |
| 04/14/2004 | CN2611582Y Steam injection detecting wellhead BOP |
| 04/14/2004 | CN2611581Y Guide sleeve of oil well polish rod |
| 04/14/2004 | CN1145741C Technology for removing stratum blocking of oil well or water injection well |
| 04/13/2004 | US6719262 Bidirectional sealing blowout preventer |
| 04/13/2004 | US6719061 Apparatus and method for inserting and retrieving a tool string through well surface equipment |
| 04/13/2004 | US6719059 Plug installation system for deep water subsea wells |
| 04/13/2004 | US6719046 Apparatus for controlling the annulus of an inner string and casing string |
| 04/13/2004 | US6719042 Shear ram assembly |
| 04/13/2004 | CA2248798C High pressure tree cap |
| 04/13/2004 | CA2241027C Method and apparatus to isolate a formation zone |
| 04/13/2004 | CA2082832C Stuffing box leak detector |
| 04/08/2004 | WO2004029487A2 Metal seal with corrosion resistant alloy overlay |
| 04/08/2004 | WO2004013457A3 Electric power control for sickline operations in wellbores |
| 04/08/2004 | WO2004011770A3 Apparatus for releasing a ball into a wellbore |
| 04/08/2004 | WO2003046329A3 A wellhead assembly for communicating with the casing hanger annulus |
| 04/08/2004 | US20040066003 Extended range variable bore ram packer for a ram type blowout preventer |
| 04/08/2004 | US20040065445 Expanding tubing |
| 04/08/2004 | US20040065439 Wellbores utilizing fiber optic-based sensors and operating devices |
| 04/08/2004 | US20040065436 System and method for monitoring a packer in a well |
| 04/08/2004 | US20040065435 Self-anchoring cementing wiper plug |
| 04/08/2004 | US20040065434 Tubing rotator |
| 04/07/2004 | EP1056926B1 Improvements in or relating to reducing water flow |
| 04/07/2004 | CN2610076Y Environmental protection testing blow-out proventer |
| 04/07/2004 | CN2610075Y High-abrasion spiral packing |
| 04/07/2004 | CN2610074Y Clean centralizing seal packing |
| 04/07/2004 | CN2610073Y Multifunction packing box of pumping wellhead |
| 04/07/2004 | CN1486782A High-hydroscopicity polymer resin microcapsule and its production process |
| 04/07/2004 | CN1144933C Equipment and method for sampling from earth formation through cased borehole |
| 04/06/2004 | US6715560 Collet-cone slip system for releasably securing well tools |
| 04/06/2004 | US6715555 Subsea well production system |
| 04/06/2004 | US6715554 Slimbore subsea completion system and method |
| 04/06/2004 | US6715550 Controllable gas-lift well and valve |
| 04/06/2004 | US6715543 Particulate matter plug for plugging a well |
| 04/06/2004 | US6715541 Ball dropping assembly |
| 04/06/2004 | CA2311653C Rov deployed tree cap for a subsea tree and method of installation |
| 04/06/2004 | CA2233093C Assembly and process for drilling and completing multiple wells |
| 04/01/2004 | WO2004027209A1 Method and apparatus for forming an annular barrier in a wellbore |
| 04/01/2004 | WO2004027202A2 Inner riser adjustable hanger and seal assembly |
| 04/01/2004 | WO2004027201A2 Annular isolators for expandable tubulars in wellbores |
| 04/01/2004 | WO2004027200A2 Bottom plug for forming a mono diameter wellbore casing |
| 04/01/2004 | WO2004001190A3 Subsea well apparatus |
| 04/01/2004 | WO2003097993A3 Packer |
| 04/01/2004 | WO2003029600A3 Cementing system for wellbores |
| 04/01/2004 | US20040060737 System for drilling oil and gas wells by varying the density of drilling fluids to achieve near-balanced, underbalanced, or overbalanced drilling conditions |
| 04/01/2004 | US20040060697 Smart cementing systems |
| 04/01/2004 | US20040060696 System and method for monitoring packer conditions |
| 03/31/2004 | EP1402601A2 Conductor system |
| 03/31/2004 | EP1049853B1 Inflatable packer |
| 03/31/2004 | CN2608679Y Expansion type packer |
| 03/31/2004 | CN2608678Y Anti spray box of automatic repaired polish rod |
| 03/31/2004 | CN2608677Y Polish rod sealing leak proof apparatus |
| 03/31/2004 | CN2608676Y Oil sucker well head polish rod sealing device |
| 03/31/2004 | CN2608675Y Well head pipe casing antitheft device |
| 03/30/2004 | US6712153 Resin impregnated continuous fiber plug with non-metallic element system |
| 03/30/2004 | US6712152 Downhole plug holder and method |
| 03/30/2004 | US6712147 Spool for pressure containment used in rigless well completion, re-completion, servicing or workover |
| 03/30/2004 | US6712144 Method for drilling multilateral wells with reduced under-reaming and related device |
| 03/30/2004 | CA2305957C Sealing assembly for a tubing rotator |
| 03/30/2004 | CA2149230C Anti-rotation devices for use with well tools |
| 03/25/2004 | WO2004025670A1 Polypropylene cable jacket compositions with enhanced melt strength and physical properties |
| 03/25/2004 | WO2004025075A1 Methods and compositions for sealing an expandable tubular in a wellbore |
| 03/25/2004 | WO2004025074A1 Apparatus and method for installation of subsea well completion systems |
| 03/25/2004 | WO2004025069A2 System and method of drilling and completion |
| 03/25/2004 | WO2004025068A2 System and method for well workover with horizontal tree |
| 03/25/2004 | WO2003042485A3 Apparatus for extraction of oil via underground drilling and production location |