| Patents for E21B 33 - Sealing or packing boreholes or wells (33,564) |
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| 10/04/2007 | US20070227728 Method and lightweight composition for sealing pipe and wellbores |
| 10/04/2007 | US20070227725 Packer cup systems for use inside a wellbore |
| 10/03/2007 | EP1840325A1 Method and apparatus to cement a perforated casing |
| 10/03/2007 | EP1840324A1 Method and apparatus for selective treatment of a perforated casing |
| 10/03/2007 | EP1838946A1 A sealing element and a coupling device provided with such a sealing element |
| 10/03/2007 | CN200955376Y Electric release dust-pouring device |
| 10/03/2007 | CN200955375Y Sand-proof well packer capable of washing |
| 10/03/2007 | CN200955374Y Oil-pipe internal blowout preventor |
| 10/03/2007 | CN200955373Y Oil-water well first-aid injection apparatus |
| 10/03/2007 | CN200955372Y Oil-water well hydraulic first-aid injection apparatus |
| 10/03/2007 | CN200955371Y Sleeve-pipe head positive-negative chuck-tile hanger |
| 10/03/2007 | CN200955370Y Rotary control head for drilling well |
| 10/03/2007 | CN200955369Y Large-full-bore crack well-head protector |
| 10/03/2007 | CN200955368Y 光杆密封器 Rod sealer |
| 10/03/2007 | CN100340735C Well head device for thick oil extraction by horizontal well SAGD process |
| 10/03/2007 | CN100340516C Low temperature early-strength coagulant agent |
| 10/02/2007 | US7275602 Methods for expanding tubular strings and isolating subterranean zones |
| 10/02/2007 | US7275601 Radial expansion of tubular members |
| 10/02/2007 | US7275595 Method and apparatus to isolate fluids during gravel pack operations |
| 10/02/2007 | CA2470818C Method and apparatus for supporting a tubular in a bore |
| 10/02/2007 | CA2315089C A method for controlling the rheology of an aqueous fluid and gelling agent therefor |
| 10/02/2007 | CA2280403C Set-up process of a development facility |
| 09/30/2007 | CA2582275A1 Self-cleaning well control fluid |
| 09/29/2007 | CA2582904A1 Packer cup with backup component |
| 09/27/2007 | WO2007109765A1 Mounts for blowout preventer bonnets |
| 09/27/2007 | WO2007108823A1 System and method of installing and maintaining an offshore exploration and production system having an adjustable buoyancy chamber |
| 09/27/2007 | WO2007108701A1 Sealing device |
| 09/27/2007 | WO2007107773A2 Improved packer |
| 09/27/2007 | WO2007107015A1 Drilling fluid and method for reducing lost circulation |
| 09/27/2007 | US20070221387 Expandable downhole tools and methods of using and manufacturing same |
| 09/27/2007 | US20070221384 Frac system without intervention |
| 09/27/2007 | US20070221379 Low heat of hydration cement compositions and methods of using same |
| 09/27/2007 | US20070221378 inhibit the dissociation of gas hydrates and/or have a low heat of hydration; permafrost zones; gas hydrate inhibitor is lecithin |
| 09/27/2007 | US20070221373 Disappearing Plug |
| 09/27/2007 | US20070221372 Packer |
| 09/27/2007 | CA2833612A1 Improved packer |
| 09/27/2007 | CA2681603A1 Improved packer |
| 09/26/2007 | EP1837482A1 System and method of installing and maintaining an offshore exploration and production system having an adjustable buoyancy chamber |
| 09/26/2007 | CN200952386Y Three-protection packer |
| 09/26/2007 | CN200952382Y Top pulling flexible resetting self-cementing floating hoop |
| 09/26/2007 | CN200952378Y High pressure resisting and tight sealing and quick sealing base heat packer |
| 09/26/2007 | CN200952377Y Well drilling and well repairing pipe column blow-out preventer |
| 09/26/2007 | CN200952376Y Automatic hydraulic locking device of flashboard blow-out preventer for petroleum and natural gas drilling |
| 09/26/2007 | CN200952375Y Centering polished rod sealing device |
| 09/26/2007 | CN200952374Y Multifunction gas production well head device |
| 09/26/2007 | CN200952373Y Oil well casing gas antitheft collecting device |
| 09/26/2007 | CN101044294A Downhole swellable seal |
| 09/26/2007 | CN101042045A Method of intelligent mechanical looking for water-shutoff and used pipe column |
| 09/25/2007 | US7273110 Sealing element for pipes and methods for using |
| 09/25/2007 | US7273107 Valve within a control line |
| 09/25/2007 | US7273103 Cement compositions comprising environmentally compatible defoaming agents and methods of use |
| 09/25/2007 | US7273101 Delayed-gelation solution |
| 09/25/2007 | US7273100 Mixture of hydraulic cements, water and low molecular weight anionic starch |
| 09/25/2007 | CA2474296C Retrievable bridge plug |
| 09/25/2007 | CA2422834C Isolation bypass transition joint |
| 09/25/2007 | CA2296978C Destruction process for rigid thermal insulation installed in a confined space |
| 09/25/2007 | CA2260523C Sealed lateral wellbore junction assembled downhole |
| 09/20/2007 | WO2007063492A3 Packer cups for use inside a wellbore |
| 09/20/2007 | WO2007047800A3 Apparatus and method for managed pressure drilling |
| 09/20/2007 | US20070215361 Valve |
| 09/20/2007 | US20070215353 mixing fly ash with aqueous solution comprising calcium carbonate to carbonate fly ash, andmixing carbonated fly ash with cement slurry, thereby modifying set time and induction profile of cement |
| 09/20/2007 | US20070215352 Subsurface safety valve with closure provided by the flowing medium |
| 09/20/2007 | US20070215218 Device for Removal and Filtration of Drilling Fluid |
| 09/19/2007 | EP1834064A1 Apparatus and method for reverse circulation cementing a casing in an open-hole wellbore |
| 09/19/2007 | EP1509675B1 Method for construction and completion of injection wells |
| 09/19/2007 | EP1283939B1 Method for plugging a well with a resin |
| 09/19/2007 | CN200949450Y Multifunctional oil producing special tool |
| 09/19/2007 | CN200949448Y Full sealing three position four-way valve safety clutching board of drilling blowout preventer remote control console. |
| 09/19/2007 | CN200949446Y Cement-injection device |
| 09/19/2007 | CN200949445Y Plugging packer for small borehole oil-gas water well |
| 09/19/2007 | CN200949444Y Oil-pump well self-tension blow-out preventing box |
| 09/19/2007 | CN200949443Y Rotating universal blow-out preventer with mud-proof sealing |
| 09/19/2007 | CN200949442Y Auxiliary pipe movable type sual tubing wellhead device |
| 09/19/2007 | CN200949441Y Hose type anti-bias grinder dish packing box |
| 09/19/2007 | CN200949440Y Fast assembled wellhead device |
| 09/19/2007 | CN200949439Y Oil pipe hanger device with cut-off valve |
| 09/19/2007 | CN200949434Y Slip type hanger |
| 09/19/2007 | CN200949432Y Clip type mandrel sleeve hanger |
| 09/19/2007 | CN100338332C Quick release blowout preventer bonnet |
| 09/18/2007 | US7270190 Variable size coil tubing gripping elements |
| 09/18/2007 | US7270188 Radial expansion of tubular members |
| 09/18/2007 | US7270185 Drilling system and method for controlling equivalent circulating density during drilling of wellbores |
| 09/18/2007 | US7270184 Method of well treatment |
| 09/18/2007 | US7270183 Cementing methods using compressible cement compositions |
| 09/18/2007 | US7270182 Earth loop installed with sonic apparatus |
| 09/18/2007 | US7270181 Downhole surge pressure reduction and filtering apparatus |
| 09/18/2007 | US7270179 Method for stimulation of liquid flow in a well |
| 09/18/2007 | US7270177 Instrumented packer |
| 09/18/2007 | CA2569713C Retrievable bridge plug and retrieving tool |
| 09/18/2007 | CA2503972C Logging plug with high integrity internal seal |
| 09/18/2007 | CA2486462C Cup tool, cup tool cup and method of using the cup tool |
| 09/18/2007 | CA2472792C Variable bore ram |
| 09/18/2007 | CA2423758C Transport and supply frame for bop assembly |
| 09/18/2007 | CA2406842C Annular pressure spool |
| 09/18/2007 | CA2385805C Subsea lubricator device and methods of circulating fluids in a subsea lubricator |
| 09/13/2007 | WO2007103686A1 Extended reach anchor |
| 09/13/2007 | WO2007103656A1 Millable pre-installed plug |
| 09/13/2007 | WO2007016678A3 Modular backup fluid supply system |
| 09/13/2007 | US20070210525 A sealing device for temporarily closing a well or a pipe |
| 09/13/2007 | US20070209796 Cementing a well bore using a composition containing a water-soluble aromatic sulfonated polymer; develops a compressive strength of greater than zero in less time; transition time of less than or equal to 90 minutes |