E21B 34 - Valve arrangements for boreholes or wells

Patents for E21B 34 - Valve arrangements for boreholes or wells (14,685)
09/2013
09/04/2013	CN103282599A Low equivalent circulation density setting tool
09/04/2013	CN103277078A Hydraulic sliding sleeve
09/04/2013	CN103277068A Oil well casing pipe exhaust valve
09/04/2013	CN102128014B Electric bailing well opening anti-theft cap
09/03/2013	US8522887 Aquifier flow controlling valve assembly and method
09/03/2013	US8522886 Downhole apparatus having a rotating valve member
09/03/2013	US8522883 Debris resistant internal tubular testing system
09/03/2013	US8522879 Method and apparatus for controlling fluid flow into a borehole
09/03/2013	US8522878 Downhole deployment valves
09/03/2013	US8522877 Sliding sleeve locking mechanisms
08/2013
08/29/2013	WO2013126592A2 Well tree hub and interface for retrievable processing modules
08/29/2013	WO2013126401A1 Device and method for generating pressure pulses in flowing fluid
08/29/2013	WO2013126192A1 Flow control devices on expandable tubing run through production tubing and into open hole
08/29/2013	WO2013126064A1 Well drilling systems and methods with pump drawing fluid from annulus
08/29/2013	WO2012156117A3 Shear valve
08/29/2013	US20130220640 Flow Control Devices on Expandable Tubing Run Through Production Tubing and Into Open Hole
08/29/2013	US20130220634 Flow stop valve
08/29/2013	US20130220633 Downhole Fluid Flow Control System and Method Having a Fluidic Module with a Flow Control Turbine
08/29/2013	US20130220632 Adjustable Flow Control Device
08/29/2013	US20130220624 Wireline retrievable injection valve assembly with a variable orifice
08/29/2013	US20130220603 Indexing Sleeve for Single-Trip, Multi-Stage Fracing
08/29/2013	US20130220596 Wellbore cleaning method and apparatus
08/28/2013	EP2631420A1 Autonomous cut-off device
08/28/2013	EP2631418A2 External pressure testing of gas lift valve in side-pocket mandrel
08/28/2013	EP2630327A1 Tools and methods for use in completion of a wellbore
08/28/2013	EP2630326A2 Fluid injection device
08/28/2013	EP2630325A2 Remotely controllable fluid flow control assembly
08/28/2013	CN203161175U Downhole vent valve
08/28/2013	CN203161174U Gas-lift valve
08/28/2013	CN203161173U Well opening pressure-measuring pressure gauge connector
08/28/2013	CN203161172U One-way constant pressure valve for oil well production measurement
08/28/2013	CN203161171U Bulkhead of unidirectional counterbalance valve
08/28/2013	CN203161170U Well casing pressure balancer
08/28/2013	CN203161169U Casing pressure relief device
08/28/2013	CN103266867A Horizontal well water exploration valve
08/28/2013	CN103266866A Key needle tube type anti-theft anti-freezing sampling valve
08/28/2013	CN102182423B Sleeve valve opening/closing device
08/27/2013	US8517113 Remotely actuating a valve
08/27/2013	US8517112 System and method for subsea control and monitoring
08/27/2013	US8517108 Vortex controlled variable flow resistance device and related tools and methods
08/27/2013	US8517107 Vortex controlled variable flow resistance device and related tools and methods
08/27/2013	US8517106 Vortex controlled variable flow resistance device and related tools and methods
08/27/2013	US8517105 Vortex controlled variable flow resistance device and related tools and methods
08/27/2013	US8517093 System and method for drilling hammer communication, formation evaluation and drilling optimization
08/22/2013	WO2013122987A1 Actuation system and method for a downhole tool
08/22/2013	WO2013122712A1 Selectively corrodible downhole article and method of use
08/22/2013	WO2013122606A1 Operation of multiple interconnected hydraulic actuators in a subterranean well
08/22/2013	WO2012107730A8 A method for individually servicing a plurality of zones of a subterranean formation
08/22/2013	US20130213673 Decoupling a remote actuator of a well tool
08/22/2013	US20130213667 Well Flow Control with Multi-Stage Restriction
08/22/2013	US20130213666 Operation of multiple interconnected hydraulic actuators in a subterranean well
08/22/2013	US20130213665 Apparatus Including Water-Soluble Material for Use Downhole
08/21/2013	CN203145910U Super-short intelligent water distributor
08/21/2013	CN203145908U Gap self-compensating precise control water filling instrument
08/21/2013	CN203145895U Downhole automatic-control sliding sleeve device of multiple-pressure-layer-series oil and gas development
08/21/2013	CN203145894U Spring supporting type circulation bypass device for packer
08/21/2013	CN203145893U Watering combination valve used on mouth of producing well
08/21/2013	CN203145892U Pressure-building prevention device for heavy oil well
08/21/2013	CN103261574A Remotely controlled apparatus for downhole applications and related methods
08/21/2013	CN103261570A An inflow assembly
08/21/2013	CN103261569A Downhole completion
08/21/2013	CN103256022A Flow automatic measuring and control device
08/21/2013	CN103256021A Ball valve enclosure and drive mechanism
08/21/2013	CN102094596B Locking device for downhole sliding sleeve of intelligent well and operation method thereof
08/21/2013	CN102031953B Underground position selecting hydraulic decoding method and device of intelligent well
08/21/2013	CA2806898A1 Apparatus and methods for wellbore completion
08/20/2013	US8511389 System and method for inductive signal and power transfer from ROV to in riser tools
08/20/2013	US8511374 Electrically actuated insert safety valve
08/20/2013	CA2685053C Restrictor valve mounting for downhole screens
08/20/2013	CA2591039C Axially energisable ball valve
08/15/2013	WO2013119586A1 Motor saver sub for down hole drilling assemblies
08/15/2013	WO2013119255A1 Debris anti-compaction system for ball valves
08/15/2013	WO2013119194A1 Pump-through fluid loss control device
08/15/2013	WO2013117202A1 Retrievable flow module unit
08/15/2013	US20130206425 Selectively Corrodible Downhole Article And Method Of Use
08/15/2013	US20130206424 Valve device for a side pocket or sub in a well
08/15/2013	US20130206420 Retrievable flow module unit
08/15/2013	US20130206419 Blowout preventer and launcher sytem
08/15/2013	US20130206417 Debris anti-compaction system for ball valves
08/15/2013	US20130206401 Actuation system and method for a downhole tool
08/15/2013	US20130206389 Dual closure system for well system
08/14/2013	EP2625381A1 Actuation dart for wellbore operations, wellbore treatment apparatus and method
08/14/2013	EP2625380A1 Wireline conveyed apparatus for wellbore fluid treatment
08/14/2013	EP2625379A2 Remotely controlled apparatus for downhole applications and related methods
08/14/2013	EP2625378A2 Remotely controlled apparatus for downhole applications, components for such apparatus, remote status indication devices for such apparatus, and related methods
08/14/2013	EP2625377A2 Methods for completing multi-zone production wells using sliding sleeve valve assembly
08/14/2013	EP2625366A1 Status indicators for use in earth-boring tools having expandable members and methods of making and using such status indicators and earth-boring tools
08/14/2013	CN203130041U Manual pressure relief device
08/14/2013	CN203130040U Oil drainage tubing string for borehole operation
08/14/2013	CN203130039U Switch tool for switch type sliding sleeve
08/14/2013	CN203130038U 20000 psi cage-type throttle valve
08/14/2013	CN103244075A Smart well interval control valve
08/14/2013	CN101718182B Ball valve type inside and outside integrative downhole blow-out preventer
08/13/2013	US8505639 Indexing sleeve for single-trip, multi-stage fracing
08/13/2013	US8505632 Method and apparatus for deploying and using self-locating downhole devices
08/13/2013	CA2778713A1 Device and method for use in controlling fluid flow
08/13/2013	CA2620481C Debris protection for sliding sleeve
08/08/2013	WO2013115948A1 Wiper plug elements and methods of stimulating a wellbore environment
08/08/2013	WO2013115923A1 Pressure actuation enabling method
08/08/2013	WO2013115812A1 Opening or closing a fluid flow path using a material that expands or contracts via a change in temperature

1 ... 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 ... 147