Patents for E21B 34 - Valve arrangements for boreholes or wells (14,685) |
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12/26/2012 | EP2536916A2 A valve device for a side pocket or a sub in a well |
12/26/2012 | EP2536915A1 Magnets-based tool for pulsing injected liquid |
12/26/2012 | EP2536914A1 Valve device |
12/26/2012 | CN202628034U Oil well casing integration device |
12/26/2012 | CN202628033U Bailing-type oil well oil drain device |
12/26/2012 | CN202628032U Oil sleeve annulus injection valve |
12/26/2012 | CN202628031U Pilot solenoid valve for wellhead of gas well and lifting mechanism for valve core |
12/26/2012 | CN202628030U Drilling, sealing and grouting three-way pipe |
12/26/2012 | CN202628008U Seat seal valve plug fishing component and fishing device thereof |
12/26/2012 | CN202628004U Hydraulic dismantling device for under-pressure removing oil pipeline oil-stolen valve |
12/26/2012 | CN102841546A Underground control system, control method and application of underground control system and control method |
12/26/2012 | CN102840348A 闸阀座和座环 Valve seat and the seat ring |
12/26/2012 | CN102839944A Sliding sleeve type fracturing module, device including the module and method of using the device |
12/26/2012 | CN102839943A Bailing type oil drainage device for oil well |
12/26/2012 | CN102839942A Swabbing tool of oil-water well sleeve |
12/26/2012 | CN101694152B Multi-level fine choke manifold and automatic control system |
12/25/2012 | US8336630 Subsea well production system |
12/25/2012 | US8336629 Method and system for running subsea test tree and control system without conventional umbilical |
12/25/2012 | US8336628 Pressure equalizing a ball valve through an upper seal bypass |
12/25/2012 | US8336627 Retrievable inflow control device |
12/20/2012 | WO2012174113A2 Managing treatment of subterranean zones |
12/20/2012 | WO2012173972A2 Managing treatment of subterranean zones |
12/20/2012 | WO2012173928A2 Managing treatment of subterranean zones |
12/20/2012 | WO2012173870A2 Apparatus and method for connecting fluid lines |
12/20/2012 | WO2012173852A2 Tubular valving system, body and method of opening |
12/20/2012 | WO2012173725A1 Valving system and method of injecting chemicals |
12/20/2012 | WO2012125250A3 Valving system, method of adjusting a valve and method of fracing a wellbore |
12/20/2012 | US20120318529 Subsea pressure control system |
12/20/2012 | US20120318528 Gate valve seat and seat ring |
12/20/2012 | US20120318527 Valve System For Downhole Tool String |
12/20/2012 | US20120318526 Managing Treatment of Subterranean Zones |
12/20/2012 | US20120318525 Tubular valving system, body and method of opening |
12/20/2012 | US20120318523 Control valve assembly |
12/20/2012 | US20120318520 Diverter system for a subsea well |
12/20/2012 | US20120318510 Methods of generating magnetic particles in a subterranean environment |
12/20/2012 | US20120318507 Hydrocarbon well and technique for perforating casing toe |
12/20/2012 | US20120318497 Downhole tool |
12/19/2012 | EP2535508A1 Downhole deployment valves |
12/19/2012 | EP2535507A1 Downhole deployment valves |
12/19/2012 | EP2535506A1 Downhole deployment valves |
12/19/2012 | EP2535505A1 Downhole deployment valves |
12/19/2012 | EP2535504A1 Downhole deployment valves |
12/19/2012 | EP2534331A1 Injection or other system with anti-thermal lockdown mechanism and related method |
12/19/2012 | CN202611659U Spare air-release valve for over-cable packers for oil-gas wells |
12/19/2012 | CN202611658U Air seal arrow-shaped check valve |
12/19/2012 | CN102828723A By-pass valve capable of memorizing working time for screw drill |
12/19/2012 | CN102828722A Air relief device for casing pipe of oil well |
12/17/2012 | CA2780412A1 Valve system for downhole tool string |
12/16/2012 | CA2743533A1 Downhole annular valve for loading a well |
12/13/2012 | WO2012170620A2 Sleeved ball seat |
12/13/2012 | WO2012170122A2 Modular control system for downhole tool |
12/13/2012 | WO2012168614A2 Method for determing the complex response of a permeable stratum |
12/13/2012 | WO2012167809A1 Separator for mechanically separating an actuator and an operator |
12/13/2012 | WO2011128613A3 Subsea wellhead with segmented fatigue reduction sleeve |
12/13/2012 | WO2011128612A3 Insertion of a packoff into a wellhead |
12/13/2012 | WO2011128611A3 Subsea wellhead providing controlled access to a casing annulus |
12/13/2012 | US20120312558 Radial Flow Valve |
12/13/2012 | US20120312548 In-bore blow out preventer method and apparatus |
12/13/2012 | US20120312547 Responsively activated wellbore stimulation assemblies and methods of using the same |
12/13/2012 | US20120312546 Water hammer mitigating flow control structure and method |
12/13/2012 | US20120312543 Deepwater blow out throttling apparatus and method |
12/13/2012 | US20120312540 Magnets-based tool for pulsing injected liquid |
12/13/2012 | US20120312522 Pressure balanced ultrasonic flowmeter |
12/12/2012 | EP2532830A2 Velocity Strings |
12/12/2012 | EP2531692A2 Flow control device and flow control method |
12/12/2012 | CN202597851U System improving efficiency and reliability of electromagnetic valve |
12/12/2012 | CN202596695U Downhole gas-injection tubular column |
12/12/2012 | CN202596691U Working barrel used for gas lifting and water injection |
12/12/2012 | CN202596688U Quantitative blending adjusting device of oil production wellhead process assembly valve |
12/12/2012 | CN202596667U Bypass type oil pipe floating valve |
12/12/2012 | CN202596666U Adjustable high-pressure lossless dropping valve for coal mine |
12/12/2012 | CN202596665U Drum type oil pipe float valve |
12/12/2012 | CN202596664U Wellhead backflow preventer |
12/12/2012 | CN202596663U Wellhead check valve |
12/12/2012 | CN202596662U Antitheft packing box |
12/12/2012 | CN202596648U Casting head-tubing head cover with control valve |
12/12/2012 | CN202596642U Circulation kill-job casing pipe punching device |
12/12/2012 | CN102817584A Full bore subsurface safety valve |
12/12/2012 | CN102817583A Multi-position valves for fracturing and sand control and associated completion methods |
12/12/2012 | CN102817582A Constant-pressure gas releasing and recycling device of oil well casing |
12/12/2012 | CN101493002B Control system communication and lock open tool and method for locking open a safety valve and communicating with surface |
12/11/2012 | US8327945 Remotely operated drill pipe valve |
12/11/2012 | US8327941 Flow control device and method for a downhole oil-water separator |
12/11/2012 | CA2659692C Dead string completion assembly with injection system and methods |
12/06/2012 | WO2012167020A2 Subsea safety valve system |
12/06/2012 | WO2012166930A2 Method of reducing deflection through a rod piston in a subsurface safety valve |
12/06/2012 | WO2012166643A2 Safety valve system for cable deployed electric submersible pump |
12/06/2012 | WO2012166638A2 Safety valve by-pass system for cable-deployed electric submersible pump |
12/06/2012 | WO2012166418A2 Safety valve system for cable deployed electric submersible pump |
12/06/2012 | WO2012166318A2 Ball valve |
12/06/2012 | WO2012164258A1 Improved antenna deployment |
12/06/2012 | WO2012164236A1 System and method for servicing a wellbore |
12/06/2012 | WO2012162792A1 Wellbore cementing tool having one way flow |
12/06/2012 | WO2012115891A3 Method and apparatus for pulling a crown plug |
12/06/2012 | US20120305265 Cluster Opening Sleeves for Wellbore |
12/06/2012 | US20120305257 Wellbore valve assembly |
12/06/2012 | US20120305256 Valve system |
12/06/2012 | US20120305243 Inflow control in a production casing |
12/06/2012 | US20120305241 Atomic battery powered downhole completions assembly |
12/06/2012 | CA2837510A1 Method of reducing deflection through a rod piston in a subsurface safety valve |