| Patents for E21B 33 - Sealing or packing boreholes or wells (33,564) |
|---|
| 05/15/2007 | US7216706 Annular isolators for tubulars in wellbores |
| 05/15/2007 | US7216701 Apparatus for expanding a tubular member |
| 05/15/2007 | US7216700 Torsional resistant slip mechanism and method |
| 05/15/2007 | US7216699 Sub mudline abandonment connector |
| 05/15/2007 | CA2556180C Method and apparatus for connecting a lateral branch liner to a main well bore |
| 05/15/2007 | CA2447380C Multi-cycle dump valve |
| 05/15/2007 | CA2445297C Ball dropping assembly for wellbores |
| 05/10/2007 | WO2007052082A2 Blowout preventer |
| 05/10/2007 | WO2007051970A1 Diverter plugs for use in well bores and associated methods of use |
| 05/10/2007 | WO2007051969A1 Diverter plugs for use in well bores and associated methods of use |
| 05/10/2007 | WO2007051966A1 Reverse cementing float equipment |
| 05/10/2007 | US20070102656 Mounts for blowout preventer bonnets |
| 05/10/2007 | US20070102655 Blowout preventer with breech assembly |
| 05/10/2007 | US20070102165 Self centralizing non-rotational slip and cone system for downhole tools |
| 05/10/2007 | US20070102163 System and Method for Indexing a Tool in a Well |
| 05/10/2007 | US20070102162 Apparatus for retaining two strings of tubulars |
| 05/10/2007 | US20070102160 Fluid loss additives and methods |
| 05/10/2007 | US20070102159 Plug Systems and Methods for Using Plugs in Subterranean Formations |
| 05/10/2007 | US20070102158 Plug Systems and Methods for Using Plugs in Subterranean Formations |
| 05/10/2007 | US20070102157 Methods of using settable spotting compositions comprising cement kiln dust |
| 05/10/2007 | US20070102154 Mothods of utilizing waste wasters produced by water purification processing |
| 05/10/2007 | US20070102150 Drilling flange and independent screwed wellhead with metal-to-metal seal and method of use |
| 05/09/2007 | EP1781897A2 Shearing sealing ram |
| 05/09/2007 | EP1781889A1 Improvements in or relating to subsea drilling |
| 05/09/2007 | CN2898282Y Packer with penetrating hole |
| 05/09/2007 | CN2898281Y Diameter-adjusting well packer for oil field |
| 05/09/2007 | CN2898280Y Wellhead packer |
| 05/09/2007 | CN2898279Y Multifunctional self-sealer for repairing well |
| 05/09/2007 | CN2898278Y Device against backward pouring |
| 05/09/2007 | CN2898277Y Safety device of oil well |
| 05/09/2007 | CN2898276Y Polish-rod sealer of pumping unit for oil well |
| 05/09/2007 | CN2898275Y Multifunctional well packer |
| 05/09/2007 | CN2898274Y High-temperature-resisting abrasive polish-rod sealer of pump well |
| 05/09/2007 | CN2898273Y Sealed lead ring at wellhead |
| 05/09/2007 | CN2898272Y Safety device of oil well |
| 05/09/2007 | CN2898263Y High-temperature dynamic stabilizer against blowout at oil-well opening |
| 05/09/2007 | CN1961132A Geosynthetic composite for borehole strengthening |
| 05/08/2007 | US7213647 Methods of sealing expandable pipe in well bores and sealing compositions |
| 05/08/2007 | US7213646 Cementing compositions comprising cement kiln dust, vitrified shale, zeolite, and/or amorphous silica utilizing a packing volume fraction, and associated methods |
| 05/08/2007 | US7213645 Methods of improving well bore pressure containment integrity |
| 05/08/2007 | CA2447196C Active/passive seal rotating control head |
| 05/03/2007 | WO2007049046A1 Improvements to pressure equalising devices |
| 05/03/2007 | WO2007049026A1 Cutting device and method |
| 05/03/2007 | WO2006051321A3 Apparatus and method for use in a well bore |
| 05/03/2007 | WO2006019693A3 Apparatus, system and method for positioning and stabbing well tubulars |
| 05/03/2007 | US20070100029 Cement compositions containing degradable materials and methods of cementing in subterranean formations |
| 05/03/2007 | US20070095545 Full bore injection valve |
| 05/03/2007 | US20070095540 Apparatus and method for managed pressure drilling |
| 05/03/2007 | US20070095538 Diverter plugs for use in well bores and associated methods of use |
| 05/03/2007 | US20070095534 Well bore treatment fluid |
| 05/03/2007 | US20070095532 Apparatus and method for sealing a wellbore |
| 05/03/2007 | US20070095527 Diverter plugs for use in well bores and associated methods of use |
| 05/02/2007 | EP1780373A1 Expandable packer |
| 05/02/2007 | EP1778947A1 Methods and systems for cementing wells that lack surface casing |
| 05/02/2007 | EP1778813A2 Under-neutralized alkylxylene sulfonic acid composition for enhanced oil recovery processes |
| 05/02/2007 | EP1604093A4 Method and apparatus for drilling a borehole with a borehole liner |
| 05/02/2007 | CN2895725Y Expansion type oil reservoir protector |
| 05/02/2007 | CN2895722Y Slurry-blending device special for oil-field cementing numerical-controlled automatic blending-slurry system |
| 05/02/2007 | CN2895721Y Square-can bulk blended-slurry package |
| 05/02/2007 | CN2895720Y Floating-dog gloating-shoe core-body |
| 05/02/2007 | CN2895719Y Acid-pressure packer |
| 05/02/2007 | CN2895718Y Packer with seepage-leading slot |
| 05/02/2007 | CN2895717Y Multifunction well-repairing blowout preventer |
| 05/02/2007 | CN2895716Y Multifunction well-repairing blowout preventor |
| 05/02/2007 | CN2895715Y Well-head polish-rod sealer capable of regulating bias |
| 05/02/2007 | CN2895714Y Bias-grind-proof apparatus of packing box |
| 05/02/2007 | CN2895713Y Anti-theft sampling work-box for oil well |
| 05/02/2007 | CN2895712Y Oil-well packing box capable of constant lubricating |
| 05/02/2007 | CN2895711Y Sewage flow-guide apparatus of water-filling well detection lubricator |
| 05/02/2007 | CN1313561C Process for preparing inorganic filler type water absorption resin by underground polymerization |
| 05/02/2007 | CN1313560C Process for preparing high water absorption resin by underground polymerization |
| 05/01/2007 | US7211548 Newberyite or struvite bridging agent; partially depolymerized starch derivative, especially a partially depolymerized crosslinked ether derivative of a starch; and a base fluid such as a drilling or well servicing fluid |
| 05/01/2007 | US7210535 Isolation system comprising a plug and a circulation valve and method of use |
| 05/01/2007 | US7210534 Lock for a downhole tool with a reset feature |
| 05/01/2007 | US7210533 Disposable downhole tool with segmented compression element and method |
| 05/01/2007 | US7210525 Apparatus for controlling a tool having a mandrel that must be stroked into or out of a well |
| 05/01/2007 | CA2499340C Downhole sampling tool and method for using same |
| 04/26/2007 | WO2007047800A2 Apparatus and method for managed pressure drilling |
| 04/26/2007 | WO2007045820A1 Apparatus and method for reverse circulation cementing a casing in an open-hole wellbore |
| 04/26/2007 | WO2007045811A1 Poppet valves |
| 04/26/2007 | WO2007045260A1 Subsea equipment |
| 04/26/2007 | WO2006133350A3 Wellhead bypass method and apparatus |
| 04/26/2007 | US20070089910 Method of forming a bore |
| 04/26/2007 | US20070089885 Bottom hole completion system for an intermittent plunger |
| 04/26/2007 | US20070089880 Methods of using cement compositions comprising high alumina cement and cement kiln dust |
| 04/26/2007 | US20070089879 In-situ method of producing oil shale, on-shore and off-shore |
| 04/26/2007 | US20070089877 Expandable packer |
| 04/25/2007 | EP1625422B1 Formation-based interpretation of nmr data for carbonate reservoirs |
| 04/25/2007 | EP1206623B1 Anti-rotation device for use with well tools |
| 04/25/2007 | CN2893141Y Spigot type hollow integrated separated layer water-flooding process pipe column |
| 04/25/2007 | CN2893136Y Double-central pipe drillable packer |
| 04/25/2007 | CN2893135Y Depacking well head sealer |
| 04/25/2007 | CN2893134Y Production and back-pressure gate antitheft device |
| 04/25/2007 | CN2893131Y Sand flushing packer |
| 04/24/2007 | US7207388 Non-Damaging Fluid-Loss Pill and Method of Using the Same |
| 04/24/2007 | US7207387 Methods and compositions for use with spacer fluids used in subterranean well bores |
| 04/24/2007 | US7207382 Shearing sealing ram |
| 04/24/2007 | CA2462472C Casing-engaging well tree isolation tool and method of use |
| 04/24/2007 | CA2444043C Well stimulation tool and method for inserting a backpressure plug through a mandrel of the tool |
| 04/24/2007 | CA2438877C Well jet device |