| Patents for E21B 33 - Sealing or packing boreholes or wells (33,564) |
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| 06/08/2006 | US20060118295 Diverter tool |
| 06/08/2006 | CA2588728A1 Elevator for use in handling pipe and method for handling pipe |
| 06/07/2006 | EP1666696A2 Apparatus and method for return of drilling fluid from a sealed marine riser to a floating drilling rig while drilling |
| 06/07/2006 | EP1664484A1 Device and method of lining a wellbore |
| 06/07/2006 | EP1664481A1 Drilling method |
| 06/07/2006 | EP1664480A1 Dual function cement additive |
| 06/07/2006 | EP1664479A1 A method of suspending, completing and working over a well |
| 06/07/2006 | EP1565644A4 Well treating process and system |
| 06/07/2006 | EP1563160B1 Tensioning system for production tubing in a riser at a floating installation for hydrocarbon production. |
| 06/07/2006 | EP1255912B1 Non-intrusive pressure measurement device for subsea well casing annuli |
| 06/07/2006 | EP1232327B1 Sealing off openings through the wall of a well tubular |
| 06/07/2006 | EP1093540A4 Method and multi-purpose apparatus for control of fluid in wellbore casing |
| 06/07/2006 | CN2786277Y Device for concentric separate-layer steam distribution for thick oil separate-layer steam drive process |
| 06/07/2006 | CN2786276Y Device for eccentric separate-layer steam distribution for thick oil separate-layer steam drive process |
| 06/07/2006 | CN2786275Y Anti-theft four-way test valve with cipher for water injection well |
| 06/07/2006 | CN2786274Y Antipollution oil layer packer for heat cleaning of oil pumping well |
| 06/07/2006 | CN2786273Y Bias-adjusting type polish rod sealing blowout preventer |
| 06/07/2006 | CN1258635C Wellbore system including a conduit an expandable device |
| 06/06/2006 | US7056008 Fluid mixing system |
| 06/06/2006 | US7055632 Well stimulation tool and method for inserting a backpressure plug through a mandrel of the tool |
| 06/06/2006 | US7055611 Plug-dropping container for releasing a plug into a wellbore |
| 06/06/2006 | US7055610 Plug concealment and diversion tool |
| 06/06/2006 | US7055608 Forming a wellbore casing while simultaneously drilling a wellbore |
| 06/06/2006 | US7055607 Seal assembly for a safety valve |
| 06/06/2006 | US7055603 placing Portland cement, pozzolana cement, gypsum cement, soil cement, calcium phosphate cement, high alumina content cement, silica cement, or high alkalinity cement into a subterranean formation,using vitrified shale to reduce the loss of cement; andallowing the cement composition to set. |
| 06/06/2006 | US7055597 Method and apparatus for downhole tubular expansion |
| 06/06/2006 | US7055596 Packer releasing methods |
| 06/06/2006 | US7055595 Electrical submersible pump actuated packer |
| 06/06/2006 | US7055593 Well stuffing box packing |
| 06/06/2006 | US7055592 Toroidal choke inductor for wireless communication and control |
| 06/06/2006 | CA2413136C Method and device for sealing boreholes |
| 06/06/2006 | CA2368902C Inflatable packer |
| 06/06/2006 | CA2344744C Rotating blowout preventer with independent cooling circuits and thrust bearing |
| 06/06/2006 | CA2306656C Expandable connector for borehole tubes |
| 06/01/2006 | WO2006058244A2 Shear/seal ram assembly for a ram-type blowout prevention system |
| 06/01/2006 | WO2006057646A2 System and method of installing and maintaining offshore exploration and production system having adjustable buoyancy chamber |
| 06/01/2006 | WO2006041825A3 One trip liner conveyed gravel packing and cementing system |
| 06/01/2006 | US20060113501 Shear/seal ram assembly for a ram-type blowout prevention system |
| 06/01/2006 | US20060113082 Ported velocity tube for gas lift operations |
| 05/31/2006 | EP1660795A1 Improved seal |
| 05/31/2006 | EP1660753A1 Method and apparatus for adding a tubular to drill string with diverter |
| 05/31/2006 | EP1588014A4 Mounts for blowout preventer bonnets |
| 05/31/2006 | EP1289684B1 Method of treating a contaminated material |
| 05/31/2006 | CN2784582Y Novel valve core of slurry valve |
| 05/31/2006 | CN2784581Y High pressure water blocking device for down-hole drilling |
| 05/31/2006 | CN2784580Y Hydraulic locking packer |
| 05/31/2006 | CN2784579Y Pressure release device for water well |
| 05/31/2006 | CN2784578Y Eccentric well mouth device and christmas tree thereof |
| 05/30/2006 | US7051990 Blowout preventer and movable bonnet support |
| 05/30/2006 | US7051989 Blowout preventer and movable ram block support |
| 05/30/2006 | US7051812 Fracturing tool having tubing isolation system and method |
| 05/30/2006 | US7051805 Expandable packer with anchoring feature |
| 05/30/2006 | US7051803 Enclosed radial wire-line cable conveying method and apparatus |
| 05/30/2006 | CA2320949C Injection molded degradable casing perforation ball sealers |
| 05/26/2006 | WO2006053896A1 Method of sealing an annular space in a wellbore |
| 05/26/2006 | CA2585498A1 Method of sealing an annular space in a wellbore |
| 05/25/2006 | US20060111247 Treatment fluids comprising starch and ceramic particulate bridging agents and methods of using these fluids to provide fluid loss control |
| 05/25/2006 | US20060111246 Aqueous storable cement spacer system |
| 05/25/2006 | US20060108150 Comprises chabazite; well bores |
| 05/25/2006 | US20060108126 Gas-pressurized lubricator |
| 05/25/2006 | US20060108119 Riser rotating control device |
| 05/25/2006 | US20060108118 Apparatus and method for installation of subsea well completion systems |
| 05/24/2006 | EP1659260A2 Riser rotating control device |
| 05/24/2006 | EP1659259A1 Apparatus and methods for separating and joining tubulars in a wellbore |
| 05/24/2006 | EP1659258A2 Top drive for casing connection |
| 05/24/2006 | CN2782919Y Packer |
| 05/24/2006 | CN2782918Y Well back flushing packer |
| 05/24/2006 | CN2782917Y Dextral rotation desterlized hydraulic well-flushing packer |
| 05/24/2006 | CN2782916Y Protective device for packer rubber tube |
| 05/24/2006 | CN2782915Y Deep weel pressing carack packer rubber tube |
| 05/24/2006 | CN2782914Y Cable penetrated simple rod free oil production hole top |
| 05/24/2006 | CN2782913Y Enviroment measuring well head |
| 05/23/2006 | US7049506 Conductor system |
| 05/23/2006 | US7048066 Downhole sealing tools and method of use |
| 05/23/2006 | US7048065 Method and apparatus for expandable liner hanger with bypass |
| 05/23/2006 | US7048062 Method of selecting tubular members |
| 05/23/2006 | US7048059 Annulus pressure control system for subsea wells |
| 05/23/2006 | US7048058 Subsea system for separating multiphase fluid |
| 05/23/2006 | US7048055 Packer with integral cleaning device |
| 05/23/2006 | US7048054 Cement compositions containing coarse barite, process for making same and methods of cementing in a subterranean formation |
| 05/23/2006 | US7048053 Zeolite compositions having enhanced compressive strength |
| 05/23/2006 | US7048050 Method and apparatus for cementing drill strings in place for one pass drilling and completion of oil and gas wells |
| 05/23/2006 | CA2527395A1 Riser rotating control device |
| 05/18/2006 | WO2006052333A1 System and method for thermal change compensation in an annular isolator |
| 05/18/2006 | WO2006052139A1 A method and device for fluid displacement |
| 05/18/2006 | WO2006051321A2 Apparatus and method for use in a well bore |
| 05/18/2006 | WO2006051317A1 Improved valve |
| 05/18/2006 | WO2006051282A1 Method of cementing expandable well tubing |
| 05/18/2006 | WO2006050807A1 Method for saturating cavities present in a mass of soil or in a body in general |
| 05/18/2006 | WO2005001233A3 Improved horizontal tree assembly |
| 05/18/2006 | US20060102387 Internal riser rotating control head |
| 05/18/2006 | US20060102361 Hydraulic set permanent packer with isolation of hydraulic actuator and built in redundancy |
| 05/18/2006 | US20060102359 Valve |
| 05/18/2006 | US20060102357 Electric hydraulic power unit and method of using same |
| 05/18/2006 | US20060102351 water; injecting a dialdehyde and a polymeric material, such as polyvinyl alcohol, which crosslink to form a high viscosity plug; dialdehyde can be the addition polymerization product of 4-(4-formylphenylethenyl)-1-methylpyridinium methosulphonate |
| 05/18/2006 | US20060102350 Cementing methods using compressible cement compositions |
| 05/18/2006 | US20060102339 Packoff Nipple |
| 05/18/2006 | US20060102336 Primary electro-mechanical initiating dump bailer device and method of use |
| 05/18/2006 | CA2588840A1 A method and device for fluid displacement |
| 05/18/2006 | CA2587349A1 Apparatus and method for use in a well bore |