| Patents for E21B 33 - Sealing or packing boreholes or wells (33,564) |
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| 09/15/2009 | US7588077 Downhole tubular seal system and method |
| 09/15/2009 | US7588075 Packer insert for sealing on multiple items used in a wellbore |
| 09/15/2009 | CA2595029C Downhole drilling apparatus and method for use of same |
| 09/15/2009 | CA2572399C Cement compositions comprising high aspect ratio materials and methods of use in subterranean formations |
| 09/15/2009 | CA2553894C Compositions and methods for the delivery of chemical components in subterranean well bores |
| 09/15/2009 | CA2523991C Cement compositions with improved mechanical properties and methods of cementing in subterranean formations |
| 09/15/2009 | CA2497090C Coil tubing hanger and method of using same |
| 09/15/2009 | CA2487953C Methods of consolidating formations or forming chemical casing or both while drilling |
| 09/15/2009 | CA2460124C Friction reducing composition and method |
| 09/15/2009 | CA2430792C Sealing composition |
| 09/15/2009 | CA2404752C Top drive for casing connection |
| 09/11/2009 | WO2009110805A1 Device for plug removal |
| 09/11/2009 | WO2009109788A1 A switching device for, and a method of switching, a downhole tool |
| 09/11/2009 | WO2009109625A2 Method for sealing an annular space in a wellbore |
| 09/11/2009 | WO2009109599A1 A method and an apparatus for downhole injecting one or more treatment fluids. |
| 09/11/2009 | WO2009109008A1 Borehole plug with a primary bladder inflation device and a pressure booster |
| 09/11/2009 | WO2009073373A3 Self-boosting wedge tubing-to-casing seal |
| 09/11/2009 | CA2716030A1 Device for plug removal |
| 09/11/2009 | CA2713354A1 A switching device for, and a method of switching, a downhole tool |
| 09/10/2009 | US20090223681 Zone isolation assembly for isolating a fluid zone in an existing subsurface well |
| 09/10/2009 | US20090223680 Methods for expanding tubular strings and isolating subterranean zones |
| 09/10/2009 | US20090223675 Integrated hydraulic setting and hydrostatic setting mechanism |
| 09/10/2009 | US20090223674 Integrated Electrical Connector For Use In A Wellhead Tree |
| 09/10/2009 | US20090223671 Bore selector |
| 09/10/2009 | US20090223667 Sand plugs and placing sand plugs in highly deviated wells |
| 09/10/2009 | US20090223666 Top drive swivel apparatus and method |
| 09/10/2009 | US20090223661 Split non-welded casing cap for high temperature service |
| 09/10/2009 | US20090223660 Integrated drilling deck and bop handling |
| 09/10/2009 | DE102004047386B4 Dichtungshalter mit Metalldichtungsgliedern für Unterwasserhydraulikkupplung Seal holder with metal sealing members for underwater hydraulic clutch |
| 09/09/2009 | EP2098681A1 Downhole apparatus and method |
| 09/09/2009 | EP2098561A2 Composite material formulation |
| 09/09/2009 | EP1969246A4 Cam-actuated centrifugal brake for preventing backspin |
| 09/09/2009 | EP1871976B1 Lubricator system |
| 09/09/2009 | EP1604093B1 Method and apparatus for drilling a borehole with a borehole liner |
| 09/09/2009 | EP1558831B1 Method and apparatus for varying the density of drilling fluids in deep water oil drilling applications |
| 09/09/2009 | CN201306147Y Polyvinyl chloride sleeve sealer |
| 09/09/2009 | CN201306146Y Inner blowout preventing device with pressure balance and combined seal |
| 09/09/2009 | CN201306145Y Eccentric wear prevention eccentric clamp head |
| 09/09/2009 | CN201306144Y Wellhead sealing device for oil-water well |
| 09/09/2009 | CN101529047A System for determining sealing in a wellbore |
| 09/09/2009 | CN101525985A Process for plugging bored well by forming cork for plugging |
| 09/09/2009 | CN101525984A Snubbing serving device of combined type hydraulic oil-water well |
| 09/08/2009 | US7585460 susceptible to thiobacillus, by putting said materials in contact with soluble inorganic salts such as sodium chloride (NaCl); for safe storage of sulfur recovered from the desulfuration of fossil fuels |
| 09/08/2009 | US7584797 Method of subsurface lubrication to facilitate well completion, re-completion and workover |
| 09/08/2009 | US7584792 Plug systems and methods for using plugs in subterranean formations |
| 09/08/2009 | US7584787 Sealing device for plugging a pipe or a well |
| 09/08/2009 | CA2555885C Stripper rubber adapter |
| 09/08/2009 | CA2549128C Zeolite-containing remedial compositions |
| 09/08/2009 | CA2523086C Biodegradable cement retarder compositions and methods of cementing in a subterranean formation |
| 09/07/2009 | CA2657298A1 Split non-welded casing cap for high temperature service |
| 09/05/2009 | CA2657160A1 Downhole fluid recirculation valve |
| 09/05/2009 | CA2657156A1 Composite material formulation |
| 09/04/2009 | CA2654406A1 Swellable tool with cable or line pathway therethrough |
| 09/03/2009 | WO2009108940A2 Underground sequestration system and method |
| 09/03/2009 | WO2009108742A2 Apparatus and methods for setting one or more packers in a well bore |
| 09/03/2009 | WO2009108701A1 Bypass sleeve for a wellhead |
| 09/03/2009 | WO2009106826A2 Subsea test apparatus, assembly and method |
| 09/03/2009 | WO2009067485A3 Circulation sub with indexing mechanism |
| 09/03/2009 | WO2009050681A3 Multilayered ball sealer and method of use thereof |
| 09/03/2009 | US20090218107 Reservoir Tool for Packer Setting |
| 09/03/2009 | US20090218101 Apparatus and method for inflow control |
| 09/03/2009 | US20090218097 Wellbore intervention tool |
| 09/03/2009 | US20090218095 Pressure Equalising Devices |
| 09/03/2009 | CA2752877A1 Subsea test apparatus, assembly and method |
| 09/03/2009 | CA2713714A1 Systems, methods, and devices for isolating portions of a wellhead from fluid pressure |
| 09/02/2009 | EP2096256A1 Method of forming a downhole apparatus |
| 09/02/2009 | EP2096255A1 Downhole apparatus and method |
| 09/02/2009 | EP2094941A2 Oil well stage-cementing metal plate |
| 09/02/2009 | CN201301686Y Socket and plug for slat inner tube cementing device |
| 09/02/2009 | CN201301685Y Top driving special purpose lower sleeve slurry filling device |
| 09/02/2009 | CN201301684Y Positioner of concrete plug |
| 09/02/2009 | CN201301683Y Tubing plug for preventing oil well or water well from blowout |
| 09/02/2009 | CN201301682Y Combined sucker rod blowout preventer |
| 09/02/2009 | CN201301681Y Safety relief pipe plug |
| 09/02/2009 | CN201301680Y Polish rod oil ejector for oil pumping well |
| 09/02/2009 | CN201301679Y Environment-friendly energy-saving antispray box |
| 09/02/2009 | CN101523011A Reinforcement of irregular pressure vessels |
| 09/02/2009 | CN101523010A Revised cure cycle for annular packing units |
| 09/02/2009 | CN101519953A Hydraulic slip and hydraulic blowout preventer combined oil water well pressured equipment |
| 09/02/2009 | CN101519950A Integrated flow control device and isolated component |
| 09/01/2009 | US7581596 Downhole tool with C-ring closure seat and method |
| 09/01/2009 | CA2554261C Probe isolation seal pad |
| 09/01/2009 | CA2515044C Shoe for expandable liner system |
| 09/01/2009 | CA2511628C Downhole filter |
| 09/01/2009 | CA2404894C New and improved method and apparatus for cleaning wellbore casing |
| 08/27/2009 | WO2009105575A1 Expandable packer |
| 08/27/2009 | WO2009105554A2 Production and delivery of a fluid mixture to an annular volume of a wellbore |
| 08/27/2009 | WO2009105128A1 Downhole trigger apparatus |
| 08/27/2009 | WO2009103629A1 Method and device for casing a bored well portion |
| 08/27/2009 | WO2009103149A1 A method and system for installing geothermal heat exchangers, energy piles, concrete piles, micropiles, and anchors using a sonic drill and a removable or retrievable drill bit |
| 08/27/2009 | US20090211770 Elongated Sealing Member for Downhole Tool |
| 08/27/2009 | US20090211769 Apparatus and methods for setting one or more packers in a well bore |
| 08/27/2009 | US20090211767 Expandable Member for Downhole Tool |
| 08/27/2009 | US20090211763 Vertical Annular Separation and Pumping System with Integrated Pump Shroud and Baffle |
| 08/27/2009 | US20090211762 Detachable Electrical Actuator |
| 08/27/2009 | US20090211761 Oil and gas well completion system and method of installation |
| 08/27/2009 | US20090211760 Well servicing tool storage system for subsea well intervention |
| 08/27/2009 | US20090211756 Formation tester with low flowline volume |
| 08/27/2009 | US20090211750 Stuffing Box Apparatus |
| 08/27/2009 | US20090211749 Systems, methods, and devices for isolating portions of a wellhead from fluid pressure |