| Patents for E21B 33 - Sealing or packing boreholes or wells (33,564) |
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| 03/08/2006 | CN1743641A Method for extracting residue oil by injecting profile control agent to norizontal well for blocking water injection path of oil reservoir |
| 03/07/2006 | US7008908 Selective stimulation with selective water reduction |
| 03/07/2006 | US7008477 Foamed cement slurries, additives and methods |
| 03/07/2006 | US7007913 Rotating blowout preventer with independent cooling circuits and thrust bearing |
| 03/07/2006 | US7007760 Method of expanding a tubular element in a wellbore |
| 03/07/2006 | US7007755 Elastomeric admixtures for improving cement elasticity |
| 03/07/2006 | US7007754 Method of cementing an area of a borehole with aqueous cement spacer system |
| 03/07/2006 | US7007753 Top drive swivel apparatus and method |
| 03/07/2006 | US7007752 Well treatment fluid and methods with oxidized polysaccharide-based polymers |
| 03/07/2006 | CA2328816C One-piece ram element block for wireline blowout preventers |
| 03/02/2006 | WO2006023218A2 Rotating pressure control head |
| 03/02/2006 | US20060047028 Hydrogel for use in downhole seal applications |
| 03/02/2006 | US20060042801 Isolation device and method |
| 03/02/2006 | US20060042800 System and method of installing and maintaining an offshore exploration and production system having an adjustable buoyancy chamber |
| 03/02/2006 | US20060042799 Tubing running equipment for offshore rig with surface blowout preventer |
| 03/02/2006 | US20060042791 Tubing running equipment for offshore rig with surface blowout preventer |
| 03/01/2006 | EP1630181A1 Thermostable, watersoluble at high temperatures curable Polymer |
| 03/01/2006 | EP1315883B1 Well packing |
| 03/01/2006 | EP1232326B1 Device for injecting a fluid into a formation |
| 03/01/2006 | CN2761831Y Well cementation swirler |
| 03/01/2006 | CN2761830Y Outside pipe liquid expansion packer |
| 03/01/2006 | CN2761829Y Multipurpose shoulder protection device used on packer |
| 03/01/2006 | CN2761828Y Lift out prevention anti blow out device of pumping well |
| 03/01/2006 | CN2761827Y Wide angle ring sealing blowout prevention sealing device |
| 03/01/2006 | CN2761826Y Multifunction well enclosing device |
| 03/01/2006 | CN2761825Y High temperature polish rod sealing device of filling extracting combined oil pumping well |
| 03/01/2006 | CN2761824Y Oil pumping machine well head packing box |
| 03/01/2006 | CN2761823Y Simple oil extraction wellhead |
| 03/01/2006 | CN2761817Y Driving device of oil pipe pressurized removing |
| 03/01/2006 | CN1742196A Determination of amount of proppant added to a fracture fluid using a coriolis flow meter |
| 02/28/2006 | US7004444 Rotating blowout preventer with independent cooling circuits and thrust bearing |
| 02/28/2006 | US7004260 Method of sealing an annulus |
| 02/28/2006 | US7004258 Method and apparatus for enhancing oil and gas flow in a well |
| 02/28/2006 | US7004257 Apparatus and methods for separating and joining tubulars in a wellbore |
| 02/28/2006 | US7004256 cementing in a subterranean formation penetrated by a well bore that comprises providing a cement composition comprising water, a cement, a strength-retrogression additive, and an acid like ethylenediamine tetra acetic acid, |
| 02/28/2006 | US7004255 Fracture plugging |
| 02/28/2006 | US7004253 Process for reducing the production of water in oil wells |
| 02/28/2006 | US7004250 Sealing system for the interspace in the transition region between two well pipes of different diameters, and mounting tool for this |
| 02/28/2006 | US7004248 High expansion non-elastomeric straddle tool |
| 02/28/2006 | CA2412911C Well stimulation tool and method of using same |
| 02/28/2006 | CA2302187C Coiled tubing completion system |
| 02/23/2006 | US20060038147 Unitary blade seal for a shearing blind ram in a ram type blowout preventer |
| 02/23/2006 | US20060037753 Sealing compositions and associated method of use |
| 02/23/2006 | US20060037748 Subterranean well secondary plugging tool for repair of a first plug |
| 02/23/2006 | US20060037745 Expandable device for use in a well bore |
| 02/23/2006 | US20060037744 Rotating pressure control head |
| 02/22/2006 | EP1627986A1 Rotating blow out preventer |
| 02/22/2006 | EP1322833B1 Control of hydrocarbon wells |
| 02/22/2006 | CN2760219Y Anti-theft well head protector |
| 02/22/2006 | CN1738960A Mounts for blowout preventer bonnets |
| 02/22/2006 | CN1737327A Rotating pressure control device |
| 02/22/2006 | CN1737326A Automatic deflection adjusting sealing device for thick oil thermal production well mouth polish rod |
| 02/22/2006 | CN1243181C Adjustable sand blasting technique for repairing hole and its system apparatus |
| 02/22/2006 | CN1243074C Tough impact admixture for oil well cement |
| 02/21/2006 | US7000890 Pressure compensated shear seal solenoid valve |
| 02/21/2006 | US7000888 Pump rod clamp and blowout preventer |
| 02/21/2006 | US7000693 Control of hydrocarbon wells |
| 02/19/2006 | CA2782859A1 Rotating pressure control head |
| 02/19/2006 | CA2513974A1 Rotating pressure control head |
| 02/16/2006 | WO2005122313A3 Method and apparatus for performing chemical treatments of exposed geological formations |
| 02/16/2006 | US20060032635 Convertible rotary seal for progressing cavity pump drivehead |
| 02/16/2006 | US20060032634 Downhole surge pressure reduction and filtering apparatus |
| 02/16/2006 | US20060032628 Well casing straddle assembly |
| 02/15/2006 | EP1626157A1 Deformable seal (div) |
| 02/15/2006 | EP1626156A1 Recovery of production fluids from an oil or gas well |
| 02/15/2006 | EP1625422A2 Formation-based interpretation of nmr data for carbonate reservoirs |
| 02/15/2006 | EP1625281A1 Reverse circulation cementing process |
| 02/15/2006 | EP1481147B1 Methods of discovering and correcting subterranean formation integrity problems during drilling |
| 02/15/2006 | EP1274919B1 Top drive for casing connection |
| 02/15/2006 | CN2758459Y Packer capable of washing well |
| 02/15/2006 | CN2758458Y Presetting type under well choke of gas well |
| 02/15/2006 | CN2758457Y Thickened oil polish rod sealing packing of pumping oil well head |
| 02/14/2006 | US6998724 Power generation system |
| 02/14/2006 | US6997261 Conformance improvement additive, conformance treatment fluid made therefrom, method of improving conformance in a subterranean formation |
| 02/14/2006 | US6997259 Methods for forming a permeable and stable mass in a subterranean formation |
| 02/14/2006 | US6997253 Anti-rotation method and apparatus for limiting rotation of cementing plugs |
| 02/14/2006 | US6997212 Choke valve with temperature transmitter |
| 02/14/2006 | CA2452696C Universal pressure protector for a polish rod |
| 02/14/2006 | CA2414358C Deformable wall of a tubular |
| 02/14/2006 | CA2180881C Packer type groundwater sampling system and water sampling method |
| 02/14/2006 | CA2164360C Method for multi-lateral completion and cementing the juncture with lateral wellbores |
| 02/14/2006 | CA2136375C A method and apparatus for retrofitting drilling rigs with a catch pan |
| 02/10/2006 | CA2515619A1 Well casing straddle assembly |
| 02/09/2006 | WO2006014895A2 Shearing sealing ram |
| 02/09/2006 | US20060030491 Polyether polyesters having anionic functionality |
| 02/09/2006 | US20060027378 Multi-string production packer |
| 02/09/2006 | US20060027377 Well Fluid Control |
| 02/09/2006 | US20060027371 Apparatus and method |
| 02/09/2006 | US20060027367 Methods of improving conformance control in fractured hydrocarbon reservoirs |
| 02/09/2006 | US20060027366 Method for designing and constructing a well with enhanced durability |
| 02/08/2006 | EP1624152A2 Hydraulically set casing packer |
| 02/08/2006 | EP1622991A1 Well-treating method to prevent or cure lost-circulation |
| 02/08/2006 | CN2756822Y Safety cut-off device for oil-gas well |
| 02/08/2006 | CN2756820Y Bridge type deviation integrated water distribution packer |
| 02/08/2006 | CN2756818Y Packing box support clip |
| 02/08/2006 | CN1730899A Apparatus for work under pressure for oil-water well |
| 02/07/2006 | US6994170 Expandable sand control screen assembly having fluid flow control capabilities and method for use of same |
| 02/07/2006 | US6994167 Method and system for cement lining a wellbore |
| 02/07/2006 | US6994166 Composition and method for diversion agents for acid stimulation of subterranean formations |
| 02/07/2006 | US6994164 Method for enhancing the stability of a water sensitive, reactive subterranean formation |