| Patents for E21B 33 - Sealing or packing boreholes or wells (33,564) |
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| 09/13/2007 | US20070209792 Reinforced resilient wiper element |
| 09/13/2007 | US20070209724 Control Ball Valve |
| 09/12/2007 | EP1438482B1 Cementing system for wellbores |
| 09/12/2007 | EP1194497B1 Water based wellbore fluids |
| 09/12/2007 | CN200946484Y Upper-pull type rigid reset self-grouting floating hoop |
| 09/12/2007 | CN200946483Y Cement injection assembly |
| 09/12/2007 | CN200946482Y Opening or closing device for cement injecting device |
| 09/12/2007 | CN200946481Y Wedge type hole-stopper for different diameter drill hole |
| 09/12/2007 | CN200946480Y Oil pipe spraying-proof lifting device |
| 09/12/2007 | CN200946479Y Convenient self tightened sealer |
| 09/12/2007 | CN200946478Y Polished rod deflection-regulating centralizing sealer |
| 09/12/2007 | CN200946474Y Oil pipe anchor with duplex protection effect |
| 09/12/2007 | CN200946472Y Clip type core shaft oil pipe hanger |
| 09/11/2007 | US7267180 Multi-lock adapters for independent screwed wellheads and methods of using same |
| 09/11/2007 | US7267174 Placing a sealant composition containing a crosslinkable material, a crosslinking agent, a fluid loss control additive, and water in a permeable zone and setting to effect zonal isolation of the subterranean formation |
| 09/11/2007 | US7267173 A first metallic fiber component that is more dense than the base fluid; and a second glass, carbon or polymeric fiber component that has a density close to that of the base fluid and is relatively flexible |
| 09/11/2007 | US7267170 Self-degrading fibers and associated methods of use and manufacture |
| 09/11/2007 | CA2507895C Non-rotating cement wiper plugs |
| 09/07/2007 | WO2006084597A8 A method and apparatus for consolidating a wellbore |
| 09/06/2007 | US20070205002 System for Sealing an Annular Space in a Wellbore |
| 09/06/2007 | US20070204999 Completion Suspension Valve System |
| 09/06/2007 | US20070204998 Pressure Protection for a Control Chamber of a Well Tool |
| 09/06/2007 | US20070204997 Process for Disruption of Filter Cakes |
| 09/06/2007 | US20070204993 Method for drilling and casing a wellbore with a pump down cement float |
| 09/06/2007 | US20070204990 Well Treatment |
| 09/06/2007 | US20070204989 Preformed particle gel for conformance control in an oil reservoir |
| 09/06/2007 | US20070204986 Millable pre-installed plug |
| 09/05/2007 | EP1830034A2 Rotating control head radial seal protection and leak detection systems |
| 09/05/2007 | CN200943464Y Combined type suspended internal receptacle for bushing |
| 09/05/2007 | CN200943463Y Blowout preventer environmental protection device |
| 09/05/2007 | CN200943462Y Multifunctional spout stopper |
| 09/05/2007 | CN200943461Y Portal polish-rod sealing device |
| 09/05/2007 | CN200943460Y Canvass rubber composite packing set |
| 09/05/2007 | CN101029576A Method and apparatus for protruding hazadous coal-bed safety guide-jet drilling |
| 09/05/2007 | CN101029575A Method for extracting protruded coal-bed downward bedding long-borehole step-by-step covering area gas |
| 09/05/2007 | CN100335744C Method of expanding a tubular element in a wellbore |
| 09/05/2007 | CN100335742C Shear-sensitive plugging fluid for plugging and a method for plugging a subterranean formation zone |
| 09/05/2007 | CN100335741C Assembly and method for drilling low pressure formation |
| 09/04/2007 | US7264067 Method of drilling and completing multiple wellbores inside a single caisson |
| 09/04/2007 | US7264061 Well packer for a pipe string and a method of leading a line past the well packer |
| 09/04/2007 | US7264057 Subsea intervention |
| 09/04/2007 | US7264053 Providing a wellbore fluid comprising a carrier fluid and a resilient material;introducing the wellbore fluid to an annulus;allowing at least a portion of the wellbore fluid to become trapped in the annulus;placing a cement into the annulus; andallowing the cement to set |
| 09/04/2007 | US7264052 Methods and compositions for consolidating proppant in fractures |
| 09/04/2007 | US7264049 In-situ method of coal gasification |
| 09/04/2007 | US7264047 Annular isolators for expandable tubulars in wellbores |
| 09/04/2007 | CA2486673C Dynamic mudcap drilling and well control system |
| 09/04/2007 | CA2458504C Hydrocarbon recovery |
| 09/04/2007 | CA2384661C A device in a subsea system for controlling a hydraulic actuator and a subsea system with a hydraulic actuator |
| 09/02/2007 | CA2756093A1 Rotating control head radial seal protection and leak detection systems |
| 09/02/2007 | CA2756090A1 Rotating control head radial seal protection and leak detection systems |
| 09/02/2007 | CA2729427A1 Rotating control head radial seal protection and leak detection systems |
| 08/30/2007 | WO2006091302B1 Fracturing isolation sleeve |
| 08/30/2007 | US20070199716 Apparatus for connecting underwater tubular members |
| 08/30/2007 | US20070199704 Hydraulic Fracture Initiation and Propagation Control in Unconsolidated and Weakly Cemented Sediments |
| 08/30/2007 | US20070199693 Eutectic material-based seal element for packers |
| 08/30/2007 | US20070199690 Mechanical connection system |
| 08/29/2007 | EP1825099A1 A method and a device for sealing a void incompletely filled with a cast material |
| 08/29/2007 | EP1825098A1 Wellbore system extending through a salt layer |
| 08/29/2007 | EP1825097A2 Shear/seal ram assembly for a ram-type blowout prevention system |
| 08/29/2007 | EP1554461B1 Cement flow control tool |
| 08/29/2007 | EP1336027B1 Apparatus for the connection of hydraulic conduits |
| 08/29/2007 | CN200940479Y Bypass seal module for side drilling horizontal well |
| 08/29/2007 | CN200940469Y Flow pipe net of separate production and separate transport wellhead |
| 08/29/2007 | CN200940468Y Packer packing element |
| 08/29/2007 | CN200940467Y Small sleeve repairing packer |
| 08/29/2007 | CN200940466Y Packer packing element protective bowl |
| 08/29/2007 | CN200940465Y Cable anti-blow-out device |
| 08/29/2007 | CN200940464Y Continuous oil pipe anti-blow-out box |
| 08/29/2007 | CN200940463Y Full seal device for repairing well |
| 08/29/2007 | CN101025083A Experiment method for packer working performance and apparatus thereof |
| 08/29/2007 | CN101025078A High-sealing corrosion-resisting compression type packer |
| 08/29/2007 | CN101025077A Ground blowout preventing control apparatus |
| 08/28/2007 | US7261153 Packer cups |
| 08/23/2007 | US20070193752 Adjustable venturi valve |
| 08/23/2007 | US20070193736 Packers and methods of use |
| 08/23/2007 | US20070193734 Apparatus for controlling a tool having a mandrel that must be stroked into or out of a well |
| 08/22/2007 | EP1819798A1 Methods of cementing in subterranean formations |
| 08/22/2007 | CN2937466Y Tool for controlling cement surface on outer of casing for well cementation |
| 08/22/2007 | CN2937465Y Semi-procedure well cementation tool |
| 08/22/2007 | CN2937464Y Mine high pressure slip casting device |
| 08/22/2007 | CN2937463Y Controllable expansion packer |
| 08/22/2007 | CN2937462Y Blow-out preventer of cable cutting hand flashboard for well repair |
| 08/22/2007 | CN2937461Y Corrosion-resistance multifunction high pressure wellhead device |
| 08/22/2007 | CN2937460Y Automatic compensation sealing mechanism |
| 08/22/2007 | CN2937459Y Double-offset polish rod sealer for pumping well |
| 08/22/2007 | CN2937458Y High pressure seal core |
| 08/22/2007 | CN2937457Y Rotation wellhead hydraulic packer |
| 08/22/2007 | CN2937456Y Magnetic screwed plug protection cover |
| 08/22/2007 | CN2937455Y Casing gate magnetic hoop protection cover |
| 08/22/2007 | CN1333036C Pre-crosslinked granular plugging agent and its production |
| 08/22/2007 | CA2537511A1 Mobile snubbing system |
| 08/21/2007 | US7258174 Method for pressure- and flow-preventive fixing of pipes in a well |
| 08/21/2007 | US7258171 Internal riser rotating control head |
| 08/21/2007 | US7258168 Liner hanger with slip joint sealing members and method of use |
| 08/21/2007 | CA2462012C System and method for installing a liner in a borehole |
| 08/21/2007 | CA2448600C Insulated casing and tubing hangers |
| 08/21/2007 | CA2438258C Articulated seal |
| 08/21/2007 | CA2386933C System and method for pressure testing communication lines of a well tool |
| 08/17/2007 | CA2759158A1 Spring/seal element |
| 08/16/2007 | WO2007091055A1 Selectively activated float equipment |