| Patents for E21B 33 - Sealing or packing boreholes or wells (33,564) |
|---|
| 06/04/2009 | US20090139713 Method and apparatus for detecting while drilling underbalanced the presence and depth of water produced from the formation |
| 06/04/2009 | US20090139712 Conductive Cement Formulation and Application for use in Wells |
| 06/04/2009 | US20090139708 Wrap-On Reactive Element Barrier Packer and Method of Creating Same |
| 06/04/2009 | US20090139707 Swellable Packer with Back-Up Systems |
| 06/04/2009 | CA2771064A1 Method and apparatus for moving a high pressure fluid aperture in a well bore servicing tool |
| 06/04/2009 | CA2704834A1 Screened valve system for selective well stimulation and control |
| 06/03/2009 | EP1606526A4 Method for preventing critical annular pressure buildup |
| 06/03/2009 | CN201250642Y Oil well pressure measurement and water plugging packer |
| 06/03/2009 | CN201250641Y Horizontal underground punching packer |
| 06/03/2009 | CN201250640Y Shaft anti-blowout and anti-overflow unit for workover |
| 06/03/2009 | CN201250639Y Flashboard rapid-changing type blowout preventer |
| 06/03/2009 | CN201250638Y Cutting flashboard of a blowout preventer |
| 06/03/2009 | CN201250637Y Rapid connecting side door of a flashboard blowout preventer |
| 06/03/2009 | CN201250636Y Rapid connecting side door type gate-tube preventer |
| 06/03/2009 | CN201250635Y Remote control device for surface bop |
| 06/03/2009 | CN201250634Y Polish rod aligning and connecting device of an oil pumping unit |
| 06/03/2009 | CN201250633Y Blowout preventer assembly of a continuous oil pipe |
| 06/03/2009 | CN201250632Y Sealing box fixing device of an intermediate rod of a petroleum drilling pump |
| 06/03/2009 | CN201250631Y Environment-friendly energy-saving free plugging device |
| 06/03/2009 | CN201250630Y Universal leveling well top stopper |
| 06/03/2009 | CN100494625C Preparation method of cementitous material special for well filling |
| 06/03/2009 | CN100494624C Hydraulic fracturing process for generating multiple fractures |
| 06/03/2009 | CA2613775A1 Downhole valve assembly |
| 06/02/2009 | US7540915 Oil-well cement slurry |
| 06/02/2009 | US7540325 Well cementing apparatus and method |
| 06/02/2009 | CA2591038C Apparatus and method for reverse circulation cementing a casing in an open-hole wellbore |
| 06/02/2009 | CA2574512C Methods and systems for cementing wells that lack surface casing |
| 06/02/2009 | CA2570746C One trip well drilling to total depth |
| 06/02/2009 | CA2517919C Polished rod rotator |
| 06/02/2009 | CA2413314C Methods, well cement compositions and lightweight additives therefor |
| 06/02/2009 | CA2413311C Methods, well cement compositions and lightweight additives therefor |
| 06/02/2009 | CA2352905C Frac plug with caged ball |
| 05/28/2009 | WO2009067588A2 Wired multi-opening circulating sub |
| 05/28/2009 | WO2009067485A2 Circulation sub with indexing mechanism |
| 05/28/2009 | WO2009067026A1 Subsea horizontal christmas three |
| 05/28/2009 | WO2009066068A1 Improved seal element |
| 05/28/2009 | WO2009065588A2 Apparatus and methods for well-bore wall surface finishing |
| 05/28/2009 | WO2009065578A1 Formation of flow conduits under pressure |
| 05/28/2009 | WO2009065576A1 Spooling apparatus for well intervention system |
| 05/28/2009 | WO2009044286A3 System and method for performing intervention operations with a subsea y-tool |
| 05/28/2009 | US20090133884 Pressure energized seal |
| 05/28/2009 | US20090133868 preparing water-in-water emulsion comprising plurality of polymers including removable polymer, combining emulsion with aqueous medium to prepare low viscosity polymer fluid, introducing fluid into zone in formation, removing removable polymer, allowing remaining polymer to form gel, isolating zone |
| 05/28/2009 | CA2706207A1 Improved seal element |
| 05/28/2009 | CA2705295A1 Circulation sub with indexing mechanism |
| 05/27/2009 | EP2062060A1 Measuring head and measuring method |
| 05/27/2009 | EP2062011A1 Flow meter |
| 05/27/2009 | EP2061948A2 Capillary injector |
| 05/27/2009 | CN201246181Y Mining gas rapid hole packer |
| 05/27/2009 | CN201246162Y Pressure test apparatus of blowout preventer |
| 05/27/2009 | CN201246159Y Semi-seal device of horizontal well continuous tube simulator |
| 05/27/2009 | CN201246135Y Throwing-free dead nozzle plugging machine |
| 05/27/2009 | CN201246134Y Split type pumping rod self seal |
| 05/27/2009 | CN201246133Y Well head automatic deviation correcting pumping rod seal device |
| 05/27/2009 | CN201246132Y Non-smooth surface flexible rope corrugated pipe well head seal device |
| 05/27/2009 | CN201246131Y Hydrogen sulfide leakage alarming emergent cut-out apparatus |
| 05/27/2009 | CN201246130Y Well head apparatus for maintaining oil well |
| 05/27/2009 | CN201246129Y Well drilling energy-saving well head apparatus |
| 05/27/2009 | CN201246128Y High temperature and high pressure thermal recovery well head apparatus |
| 05/27/2009 | CN201246122Y Novel throwing and salvaging machine |
| 05/26/2009 | US7537641 Natural gas treatment process for stimulated well |
| 05/26/2009 | US7537054 Cement compositions comprising high aspect ratio materials and methods of use in subterranean formations |
| 05/26/2009 | US7537052 Ball dropping tool method and apparatus |
| 05/26/2009 | CA2550981C Continuous circulation drilling method |
| 05/26/2009 | CA2356184C Tubing anchor |
| 05/26/2009 | CA2311160C Method for drilling and completing a wellbore and a pump down cement float collar for use therein |
| 05/22/2009 | WO2009063162A2 Method for stimulating a well using fluid pressure waves |
| 05/22/2009 | WO2009032589A3 Downhole tubular seal system and method |
| 05/22/2009 | WO2009029145A4 Heat exchanger system and well drilling equipment comprising same |
| 05/22/2009 | WO2009027662A3 Sealing assembly |
| 05/21/2009 | US20090131284 Solid zirconium-based cross-linking agent and use in oil field applications |
| 05/21/2009 | US20090127482 Hydraulic rams |
| 05/21/2009 | US20090126947 Swellable material and method |
| 05/21/2009 | US20090126936 Actuating mechanism |
| 05/21/2009 | US20090126931 Compositions and Methods for Water Control and Strengthening Unconsolidated Formations |
| 05/21/2009 | US20090126930 Cement Composition for Carbon Dioxide Supercritical Environment |
| 05/21/2009 | US20090126925 Helical backup element |
| 05/20/2009 | EP2060736A2 Mechanism for dropping a plurality of balls into tubulars used in drilling, completion and workover of wells |
| 05/20/2009 | CN201241725Y Mining polyurethane hole packer |
| 05/20/2009 | CN201241659Y Packer |
| 05/20/2009 | CN201241658Y Hydraulic expansion type sleeve inner packer |
| 05/20/2009 | CN201241657Y Triangular slitting sieve tube of sand-proof clamp |
| 05/20/2009 | CN201241656Y Double-ram blowout preventer of single layer cavity structure |
| 05/20/2009 | CN201241655Y Lubrication apparatus of rotary head of rotary blowout preventer |
| 05/20/2009 | CN201241654Y Thermal production well head apparatus on the sea |
| 05/20/2009 | CN201241653Y Spiral type packing of blowout prevention box |
| 05/20/2009 | CN201241652Y Toxic harmful gas flow guide apparatus of repairing well head |
| 05/20/2009 | CN201241651Y Packing kit of rubber valve |
| 05/20/2009 | CN201241650Y Universal manual operating apparatus of blowout preventer |
| 05/20/2009 | CN201241649Y Well head casing tube crude oil anti-theft device |
| 05/20/2009 | CN201241644Y Tool special for changing electric screw pump well package |
| 05/20/2009 | CN201241631Y Gas well salt-proof pipe column |
| 05/20/2009 | CN101435322A Well completion method of ground dipping uranium extracting process well |
| 05/20/2009 | CN101435318A Non-drill cementing well method and pipe column |
| 05/20/2009 | CN101435317A Loss return drop-out cross linked gel plugging process |
| 05/20/2009 | CN100489490C Determination of amount of proppant added to a fracture fluid using a coriolis flow meter |
| 05/19/2009 | US7534745 Gelled invert emulsion compositions comprising polyvalent metal salts of an organophosphonic acid ester or an organophosphinic acid and methods of use and manufacture |
| 05/19/2009 | US7533865 Blowout preventer operator locking system |
| 05/19/2009 | US7533723 Well bore treatment fluid |
| 05/19/2009 | US7533721 Millable pre-installed plug |
| 05/19/2009 | CA2572478C Bop bonnet supported by side mounted track |