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