| Patents for E21B 33 - Sealing or packing boreholes or wells (33,564) |
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| 10/06/2009 | US7597328 Seal assembly for reciprocating shaft |
| 10/06/2009 | US7597152 Swelling layer inflatable |
| 10/06/2009 | US7597146 Methods and apparatus for completion of well bores |
| 10/06/2009 | CA2515233C Determination of amount of proppant added to a fracture fluid using a coriolis flow meter |
| 10/06/2009 | CA2469627C System and method for lessening impact on christmas trees during downhole operations involving christmas trees |
| 10/06/2009 | CA2418774C Blowout preventer packing element with non - metallic composite inserts |
| 10/02/2009 | CA2660919A1 Flapper latch |
| 10/01/2009 | WO2009120935A2 Wellhead hanger shoulder |
| 10/01/2009 | WO2009120759A2 Wellbore anchor and isolation system |
| 10/01/2009 | WO2009120578A2 Telescoping wiper plug |
| 10/01/2009 | WO2009120519A1 Systems and techniques to actuate isolation valves |
| 10/01/2009 | WO2009120471A1 Subsurface valve having an energy absorption device |
| 10/01/2009 | US20090243282 Fitting arrangements and methods of installing fitting arrangements in a well bore |
| 10/01/2009 | US20090242215 System and method for packing |
| 10/01/2009 | US20090242214 Wellbore anchor and isolation system |
| 10/01/2009 | US20090242205 Method and apparatus for detecting acoustic activity in a subsurface formation |
| 10/01/2009 | US20090242202 Method of Perforating for Effective Sand Plug Placement in Horizontal Wells |
| 10/01/2009 | US20090242191 Telescoping Wiper Plug |
| 10/01/2009 | US20090242189 Swell packer |
| 10/01/2009 | US20090242188 Downhole Isolation Tool |
| 10/01/2009 | US20090242187 Hydraulically openable ported sub |
| 10/01/2009 | CA2718793A1 Wellbore anchor and isolation system |
| 09/30/2009 | EP2105643A2 Gas pipe slip boot |
| 09/30/2009 | EP2105577A1 Methods and apparatus for a downhole tool |
| 09/30/2009 | CN201318149Y Unidirectional inner blowout control pump-out type blanking plug |
| 09/30/2009 | CN201318148Y Manual double ram blowout preventer |
| 09/30/2009 | CN201318147Y Polish rod lubricator |
| 09/30/2009 | CN201318146Y CNG (compressed natural gas) well head device |
| 09/30/2009 | CN201318145Y Anti-overflow pipe sealed by stepless contraction band |
| 09/30/2009 | CN101548063A Swellable packer construction |
| 09/30/2009 | CN101545364A Single machine multi-well horizontal type flexible energy-saving oil pumping unit |
| 09/30/2009 | CN101545361A Fitting arrangements and methods of installing fitting arrangements in a well bore |
| 09/30/2009 | CN100545413C Method for guarding against well blowout happening when pulling out the hole |
| 09/29/2009 | US7594544 Downhole tubular sealing system |
| 09/29/2009 | US7594543 Method and apparatus for production in oil wells |
| 09/29/2009 | US7594540 Methods and apparatus for applying torque and rotation to connections |
| 09/28/2009 | CA2749138A1 Methods and apparatus for a downhole tool |
| 09/24/2009 | WO2009117478A2 Torque-provider |
| 09/24/2009 | WO2009116875A1 Well plug |
| 09/24/2009 | WO2009116871A1 Device of a plug for well testing |
| 09/24/2009 | WO2009115803A1 Device and method of lining a wellbore |
| 09/24/2009 | WO2009115493A1 Method and apparatus for performing wireline logging operations in an under-balanced well |
| 09/24/2009 | US20090236144 Managed pressure and/or temperature drilling system and method |
| 09/24/2009 | US20090236102 Water sensitive variable counterweight device driven by osmosis |
| 09/24/2009 | US20090236100 Plug retrieval and debris removal tool |
| 09/24/2009 | US20090236097 Cementing in a subterranean formation by introducing a cement, a nanoparticle free of silica fume, latex, and water into the formation, and allowing the cement composition to set |
| 09/24/2009 | US20090236096 Cement diffuser for annulus cementing |
| 09/24/2009 | US20090236095 Method of cementing gas or oil pipeline and hydraulic cement slurry |
| 09/24/2009 | CA2718688A1 Device and method of lining a wellbore |
| 09/23/2009 | EP2103776A2 System and method for selectively communicatable hydraulic nipples |
| 09/23/2009 | EP2103775A1 Method and apparatus for performing wireline logging operations in an under-balanced well |
| 09/23/2009 | EP2103774A1 Device and method of lining a wellbore |
| 09/23/2009 | EP2102447A2 Controllably-deformable inflatable sleeve, production method thereof and use of same for pressure metering applications |
| 09/23/2009 | EP2102446A1 Wellhead assembly and method for an injection tubing string |
| 09/23/2009 | CN201314218Y Hydraulic-pressure bridge plug |
| 09/23/2009 | CN201314217Y Release packer |
| 09/23/2009 | CN201314216Y Anti-stopping excluder |
| 09/23/2009 | CN201314215Y High-pressure test spray proof box |
| 09/23/2009 | CN201314214Y Derrickless wellhead assembly |
| 09/23/2009 | CN101542068A Spring energized debris barrier for mechanically set retrievable packer |
| 09/23/2009 | CN101538995A Method for replacing valve by utilizing borehole pressure |
| 09/23/2009 | CN101538994A Thermal extraction measuring well-head high-temperature high-pressure blowout preventer |
| 09/23/2009 | CN101538993A Novel side door of blowout preventer |
| 09/23/2009 | CN101538992A Blowout preventer with composite inner cavity |
| 09/22/2009 | US7591321 Zonal isolation tools and methods of use |
| 09/22/2009 | US7591320 Method of cementing expandable well tubing |
| 09/22/2009 | US7591305 Patriot retrievable production packer |
| 09/22/2009 | CA2569059C Pressure monitoring of control lines for tool position feedback |
| 09/22/2009 | CA2553018C Fluid loss control additives for use in fracturing subterranean formations |
| 09/18/2009 | CA2629651A1 Cement diffuser for annulus cementing |
| 09/17/2009 | WO2009114659A1 System, method & apparatus for sealing materials having a low glass transition temperature for high performance sealing applications |
| 09/17/2009 | WO2009114371A2 Pressure compensator for hydrostatically-actuated packers |
| 09/17/2009 | WO2009113870A2 System and method for controlling the flow of fluid in branched wells |
| 09/17/2009 | WO2009112530A2 A tool for shutting off openings or leaks in a well bore |
| 09/17/2009 | WO2009088674A3 Frac system split ring device |
| 09/17/2009 | WO2009085780A3 System and method for snubbing under pressure |
| 09/17/2009 | WO2009076614A3 Function spool |
| 09/17/2009 | WO2009073357A3 High differential shifting tool |
| 09/17/2009 | WO2009067021A3 Method and device for determination of fluid inflow to a well |
| 09/17/2009 | US20090229838 Large Bore Packer and Methods of Setting Same |
| 09/17/2009 | US20090229832 Pressure Compensator for Hydrostatically-Actuated Packers |
| 09/17/2009 | US20090229830 Subsea well production system |
| 09/17/2009 | US20090229816 Swell packer and method of manufacturing |
| 09/17/2009 | CA2717858A1 System and method for controlling the flow of fluid in branched wells |
| 09/17/2009 | CA2716533A1 Gripping element for gripping a tubular in the construction and maintenance of oil and gas wells |
| 09/16/2009 | CN201310321Y Drilling-free cementing stage collar |
| 09/16/2009 | CN201310320Y Overflow blind flange for well cementing operation |
| 09/16/2009 | CN201310319Y Half-way cementing tool without drilling plug |
| 09/16/2009 | CN201310318Y Automatic-reset hydraulic grading hoop |
| 09/16/2009 | CN201310317Y Half-way well cementing tool without drilling plug |
| 09/16/2009 | CN201310316Y A two-stage cementing tool |
| 09/16/2009 | CN201310315Y Bumping seat of reverse washing well |
| 09/16/2009 | CN201310314Y Multipurpose retrievable type blocking throttleer |
| 09/16/2009 | CN201310313Y Blowout preventer of sucker rod |
| 09/16/2009 | CN201310312Y Self-refluxing sand sluicing well mouth device |
| 09/16/2009 | CN101535593A An underwater apparatus for operating underwater equipment |
| 09/16/2009 | CN101532375A Method for recycling for failure of stage cementing unit and sealed circulation device |
| 09/16/2009 | CN101532374A Device for sealing and cleaning cable wires at well head |
| 09/16/2009 | CN101532372A Sectional type sieve tube completion tubular column |
| 09/15/2009 | US7588086 Ported velocity tube for gas lift operations |