E21B 34 - Valve arrangements for boreholes or wells

Patents for E21B 34 - Valve arrangements for boreholes or wells (14,685)
11/2013
11/27/2013	CN103415674A System and method for servicing a wellbore
11/27/2013	CN103410471A Safety control system for pneumatic well heads
11/27/2013	CN103410470A Thermal injection pipe column and thermal injection valve of heavy oil thermal recovery well
11/26/2013	US8590630 System and method for controlling the flow of fluid in branched wells
11/26/2013	US8590629 Flow stop valve and method
11/26/2013	US8590625 Subsea completion with a tubing spool connection system
11/26/2013	US8590623 Downhole tools and methods of setting in a wellbore
11/25/2013	CA2816099A1 Low profile valves
11/24/2013	CA2816458A1 Well completion using a pumpable seat assembly
11/21/2013	WO2013172857A1 Multi-zone fracturing completion
11/21/2013	WO2013172854A1 Washpipe isolation valve and associated systems and methods
11/21/2013	WO2013171529A1 Elongated trunnion for high pressure ball valves
11/21/2013	US20130306319 Hydraulic Pulse Valve With Improved Pulse Control
11/21/2013	US20130306313 Washpipe isolation valve and associated systems and methods
11/20/2013	EP2663795A1 Flow control diverter valve
11/20/2013	EP2663733A2 Autonomous valve
11/20/2013	EP2663732A1 Autonomous valve
11/20/2013	EP2663731A2 Rotational wellbore test valve
11/20/2013	CN203296750U Extension-type valving ball seat
11/20/2013	CN203296749U Horizontal well water exploration valve
11/20/2013	CN203296513U Sampling gate anti-theft lock
11/19/2013	US8584762 Downhole fluid flow control system having a fluidic module with a bridge network and method for use of same
11/19/2013	CA2744835C Adjustable venturi valve
11/19/2013	CA2713973C Ball catcher with retention capability
11/19/2013	CA2526714C Apparatus and method for recovering fluids from a well and/or injecting fluids into a well
11/14/2013	WO2013169993A1 Tool with multi-size segmented ring seat
11/14/2013	WO2013169420A1 Valve and method of supporting a seal of a valve
11/14/2013	WO2013169234A1 Downhole fluid flow control system and method having autonomous closure
11/14/2013	WO2012141881A8 Pressure equalization apparatus and associated systems and methods
11/14/2013	US20130299200 Wellbore Tools and Methods
11/14/2013	US20130299198 Downhole Fluid Flow Control System and Method Having Autonomous Closure
11/14/2013	US20130299191 Long thin structures for generating an entangled flow restricting structure
11/14/2013	US20130299184 Multi-Cycle Ball Activated Circulation Tool with Flow Blocking Capability
11/14/2013	US20130299183 Failsafe Hydrostatic Vent
11/14/2013	US20130299180 Systems and Methods For Managing Pressures In Casing
11/14/2013	US20130299164 Systems and Methods For Advanced Well Access to Subterranean Formations
11/14/2013	US20130299162 Check valve
11/14/2013	DE102012009179A1 Method for inward closing of drill pipes during drilling or during conveying process of oil and gas in sea, involves introducing self-sufficient closure mechanism into pipe during onshore and offshore drilling in electromechanical manner
11/13/2013	EP2662527A2 Failsafe Hydrostatic Vent
11/13/2013	EP2661536A2 Low equivalent circulation density setting tool
11/13/2013	EP2661533A2 Subsea safety system having a protective frangible liner and method of operating same
11/13/2013	CN203285391U Pressure-differential oil jacket communication valve
11/13/2013	CN203285390U Well-flushing circulating check valve on pump
11/13/2013	CN203285389U Deflation valve capable of releasing downhole casing pipe and achieving well backwashing
11/13/2013	CN203285388U Liquid discharging gas lift bottom valve
11/13/2013	CN203285387U Wellhead protector
11/13/2013	CN103392053A Rotational wellbore test valve
11/13/2013	CN102226390B Testing device for deep wells and high-temperature and high-pressure wells
11/12/2013	US8579032 Casing annulus management
11/12/2013	CA2559008C Duplex cone expander for expanding a tubular upward and downward from preexpanded section
11/10/2013	CA2814901A1 Failsafe hydrostatic vent
11/07/2013	WO2013165643A2 Delayed activation activatable stimulation assembly
11/07/2013	WO2013048370A9 Wellbore flow control devices comprising coupled flow regulating assemblies and methods for use thereof
11/07/2013	US20130292137 Adjustable Pressure Hydrostatic Setting Module
11/07/2013	US20130292133 Valve assembly
11/07/2013	US20130292125 Downhole Tool With Expandable Seat
11/07/2013	US20130291962 Valve seat assembly, downhole tool and methods
11/07/2013	US20130291961 Valve device
11/06/2013	EP2659089A2 Method and apparatus for controlling fluid flow into a wellbore
11/06/2013	CN203271697U Hollow water distribution flow regulating device
11/06/2013	CN203271674U Two-stage drive circuit of underground electromagnetic valve
11/06/2013	CN203271673U Automatically-controlled multiple branch choke manifold
11/06/2013	CN203271672U Automatic oil well vent valve and gas purification device
11/06/2013	CN203271671U Adjustable disk oil nozzle valve
11/06/2013	CN203271645U Decompression tool with seal
11/06/2013	CN102102500B Motor driven worm gear transmission underground sleeve valve
11/05/2013	US8573311 Pressure pulse-initiated flow restrictor bypass system
11/05/2013	US8573306 Apparatus and method for recovering fluids from a well and/or injecting fluids into a well
11/05/2013	US8573304 Eccentric safety valve
11/05/2013	CA2756050C Apparatus for wellhead high integrity protection system
11/05/2013	CA2692670C Fluid metering device and method for well tool
10/2013
10/31/2013	WO2013163558A1 Tubing retrievable injection valve assembly
10/31/2013	WO2013163314A1 Hydropower and geothermal energy system and methods
10/31/2013	WO2013162800A1 One trip treatment system with zonal isolation
10/31/2013	WO2013162545A1 Sand control device cleaning system
10/31/2013	WO2013159237A1 Methods and electrically-actuated apparatus for wellbore operations
10/31/2013	WO2012149431A3 Casing relief valve
10/31/2013	US20130284453 Downhole Circulating Valve Having a Seal Plug and Method for Operating Same
10/31/2013	US20130284452 Wellbore Flow Control Devices Comprising Coupled Flow Regulating Assemblies and Methods for Use Thereof
10/31/2013	US20130284451 Delayed Activation Activatable Stimulation Assembly
10/31/2013	US20130284428 Fluid driven pump for removing debris from a wellbore and methods of using same
10/31/2013	US20130284424 Downhole Circulating Valve Having a Seal Plug
10/30/2013	EP2655791A2 An exit assembly with a fluid director for inducing and impeding rotational flow of a fluid
10/30/2013	EP2655790A1 Split ring shift control for hydraulic pulse valve
10/30/2013	EP2655789A2 Downhole apparatus and method
10/30/2013	CN203257374U Leakproof structure of adjustable blanking plug in eccentric water distributor
10/30/2013	CN103380263A An exit assembly with a fluid director for inducing and impeding rotational flow of a fluid
10/30/2013	CN103375147A Down-hole multi-stage separate-layer-fracturing switch device
10/29/2013	US8567510 Pressure actuable downhole tool and a method for actuating the same
10/29/2013	US8567509 Downhole tool
10/29/2013	US8567506 Fluid isolating pressure equalization in subterranean well tools
10/29/2013	US8567505 Injection of liquid into boreholes, with suckback pulsing
10/29/2013	CA2676328C Casing valves system for selective well stimulation and control
10/24/2013	WO2013158086A1 Apparatus, systems and methods for a flow control device
10/24/2013	WO2013158085A1 Apparatus, systems and methods for bypassing a flow control device
10/24/2013	WO2013157925A1 Pipe for extracting reservoir fluids present in an underground reservoir and method of locally increasing the thickness of such a pipe
10/24/2013	WO2013130015A3 An inflow control device
10/24/2013	WO2012149418A3 Collapse sensing check valve
10/24/2013	US20130277583 Drive Device
10/24/2013	US20130277066 Alternating flow resistance increases and decreases for propagating pressure pulses in a subterranean well

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