| Patents for E21B 34 - Valve arrangements for boreholes or wells (14,685) |
|---|
| 12/15/2010 | CN101915069A Sulfur-resistant oil and gas extraction wellhead device provided with structure for replacing No.1 main control valve |
| 12/14/2010 | US7849925 System for completing water injector wells |
| 12/14/2010 | US7849917 Marginal oil extraction device |
| 12/14/2010 | CA2628766C Downhole array and assembly thereof |
| 12/14/2010 | CA2591849C Well head valve insulator |
| 12/14/2010 | CA2583443C Downhole safety valve apparatus and method |
| 12/14/2010 | CA2576426C Expandable injector pipe |
| 12/14/2010 | CA2552294C Methods and apparatus for optimizing well production |
| 12/09/2010 | WO2010141795A2 Subsea control module with interchangeable segments |
| 12/09/2010 | WO2010141722A2 Coated spring and method of making the same |
| 12/09/2010 | WO2010119010A3 Downhole valve tool and method of use |
| 12/09/2010 | US20100307769 Fluid control modules for use with downhole tools |
| 12/09/2010 | US20100307758 Dual flapper safety valve |
| 12/09/2010 | CA2764062A1 Coated spring and method of making the same |
| 12/08/2010 | EP2258921A1 Actuator for well-haed valve or other similar applications and system incorporating same |
| 12/08/2010 | EP2132406B1 Ball seat assembly and method of controlling fluid flow through a hollow body |
| 12/08/2010 | CN201666378U Air control valve |
| 12/08/2010 | CN201666143U Energy-saving flat valve |
| 12/08/2010 | CN201666138U Water-injection gas-exhaustion well sealing device of coal bed gas well |
| 12/08/2010 | CN101910550A Multi-position valves for fracturing and sand control associated completion methods |
| 12/08/2010 | CN101906948A Layer mining converter of defueling pump |
| 12/07/2010 | US7845433 Device and procedure for the insertion of a new drilling string-element into the drill-string of a well |
| 12/07/2010 | US7845415 Direct connecting downhole control system |
| 12/07/2010 | US7845410 Openhole perforating |
| 12/02/2010 | WO2010138413A2 Wellbore shut off valve with hydraulic actuator system |
| 12/02/2010 | WO2010018366A3 A controller for a downhole tool |
| 12/02/2010 | US20100300703 Pressure actuable downhole tool and a method for actuating the same |
| 12/02/2010 | US20100300702 Wellbore Shut Off Valve with Hydraulic Actuator System |
| 12/02/2010 | US20100300696 System and Method for Monitoring Subsea Valves |
| 12/02/2010 | US20100300689 Sealing assembly |
| 12/02/2010 | US20100300684 Continuous downhole scale monitoring and inhibition system |
| 12/02/2010 | US20100300672 Time and efficiency manifold |
| 12/01/2010 | EP2256290A1 Casing shoes and methods of reverse-circulation cementing of casing |
| 12/01/2010 | EP2256287A1 Casing shoes and methods of reverse-circulation cementing of casing |
| 12/01/2010 | EP2255115A1 Gate valve actuator and method |
| 12/01/2010 | EP2255064A2 Multi-cycle single line switch |
| 12/01/2010 | CN201661273U Solar electric control pneumatic safety cut-off system |
| 12/01/2010 | CN201661272U Automatic blowout well killing control device |
| 12/01/2010 | CN201661271U Exhaust device of air drilling tool |
| 11/30/2010 | US7841416 Method and apparatus for retaining a soft seal in an integrated flapper mount, hard seat, spring housing surface controlled subsurface safety valve |
| 11/30/2010 | US7841412 Multi-purpose pressure operated downhole valve |
| 11/30/2010 | CA2618134C Triple valve blow out preventer |
| 11/25/2010 | US20100294510 Dissolvable downhole tool, method of making and using |
| 11/25/2010 | US20100294509 Flow-actuated actuator and method |
| 11/25/2010 | US20100294508 Flow-actuated actuator and method |
| 11/25/2010 | US20100294506 Systems and methods for deliquifying a commingled well using natural well pressure |
| 11/25/2010 | US20100294502 Magnetic Flapper Shock Absorber |
| 11/25/2010 | US20100294495 Open Hole Completion Apparatus and Method for Use of Same |
| 11/24/2010 | EP2035655B1 Hydraulic metering valve for operation of downhole tools |
| 11/24/2010 | CN201650277U Pressure regulating safety valve puller |
| 11/24/2010 | CN201650213U Check valve for acquiring gas |
| 11/24/2010 | CN201650212U Oil-field laminated high-pressure adjustable high-resolution water injection valve |
| 11/24/2010 | CN201650211U Multifunctional cross |
| 11/23/2010 | US7836961 Integrated hydraulic setting and hydrostatic setting mechanism |
| 11/23/2010 | CA2655469C Downhole ball dropping apparatus |
| 11/23/2010 | CA2627822C Top hold down rod pump with hydraulically activated drain and method of use |
| 11/23/2010 | CA2614645C Inflow control device with passive shut-off feature |
| 11/23/2010 | CA2466685C Liner hanger with sliding sleeve valve |
| 11/18/2010 | WO2010112810A3 System and method for servicing a wellbore |
| 11/18/2010 | WO2010101752A3 Subterranean screen with varying resistance to flow |
| 11/18/2010 | WO2010096255A3 Screen flow equalization system |
| 11/18/2010 | WO2010085667A3 Bidirectional sealing mechanically shifted ball valve for downhole use |
| 11/18/2010 | US20100288557 Expandable reamer for subterranean boreholes and methods of use |
| 11/18/2010 | US20100288502 Shear Open Valve |
| 11/17/2010 | EP2251525A1 Methods and devices for treating multiple-interval well bores |
| 11/17/2010 | EP2250338A1 Actuator device for downhole tools |
| 11/17/2010 | CN201635736U Well mouth sampling valve antitheft device |
| 11/17/2010 | CN201635711U Well mouth casing gas release device |
| 11/17/2010 | CN201635694U Well mouth gas antitheft device |
| 11/17/2010 | CN201635693U Water detection and release drilling diversion gate valve type orifice device |
| 11/16/2010 | US7832486 Flapper gas lift valve |
| 11/16/2010 | US7832485 Riserless deployment system |
| 11/16/2010 | US7832472 Hydraulic open hole packer |
| 11/11/2010 | WO2010129631A1 Multiple-positioning mechanical shifting system and method |
| 11/11/2010 | WO2010127457A1 Sliding sleeve sub and method and apparatus for wellbore fluid treatment |
| 11/11/2010 | US20100282476 Production tubing drain valve |
| 11/11/2010 | US20100282475 Multiple-Positioning Mechanical Shifting System and Method |
| 11/11/2010 | US20100282473 Aerator for a well water pumping system |
| 11/11/2010 | US20100282472 Dual Action Jet Bushing |
| 11/11/2010 | CA2760107A1 Sliding sleeve sub and method and apparatus for wellbore fluid treatment |
| 11/10/2010 | EP2248992A2 At-surface tool for pulsed injection of liquids |
| 11/10/2010 | EP2248991A2 Remotely operated drill pipe valve |
| 11/10/2010 | CN201627989U Self-locking type high-voltage one-way valve |
| 11/10/2010 | CN201627568U Valve plate type hydraulic internal blowout preventer |
| 11/10/2010 | CN201627567U Vertical choke-kill manifold for oceanic use |
| 11/10/2010 | CN201627566U Non-return type oil nozzle sleeve |
| 11/10/2010 | CN201627565U Choke seat |
| 11/10/2010 | CN201627561U Two-in-one ocean wellhead device with safety valve |
| 11/10/2010 | CN201627560U Device for fracturing wellhead |
| 11/10/2010 | CN201627559U Integral electric pump wellhead device with safety valve |
| 11/10/2010 | CN201627558U Valve for mounting oil-extraction well head flange |
| 11/09/2010 | US7828065 Apparatus and method of stabilizing a flow along a wellbore |
| 11/09/2010 | CA2592839C Well production optimizing system |
| 11/09/2010 | CA2436248C Multiple interventionless actuated downhole valve and method |
| 11/04/2010 | WO2010126988A2 Valve system for drilling systems |
| 11/04/2010 | WO2010124371A1 Selective fracturing tool |
| 11/04/2010 | US20100276199 Expandable reamer apparatus |
| 11/04/2010 | US20100276155 System and method for subsea control and monitoring |
| 11/04/2010 | US20100276154 Flow-actuated actuator and method |
| 11/04/2010 | US20100276153 Remotely Operated Drill Pipe Valve |