Patents
Sitemap › E21 - Earth or rock drilling; Mining › E21B - Earth or rock drilling; Obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells › E21B 34 - Valve arrangements for boreholes or wells
Patents for E21B 34 - Valve arrangements for boreholes or wells (14,685)
12/2005
12/20/2005CA2332893C Automatic hydrocarbon production management system
12/15/2005US20050274529 Safety valve lock out system and method
12/15/2005US20050274528 Valve Within a Control Line
12/14/2005EP1478825A4 Tubing hanger with ball valve in the annulus bore
12/13/2005US6973974 Valves for use in wells
12/13/2005US6973970 Apparatus and methods for establishing secondary hydraulics in a downhole tool
12/13/2005CA2236944C Flow control apparatus and methods
12/08/2005WO2005116393A1 Downhole tool
12/08/2005US20050269103 Deep set safety valve
12/08/2005US20050269076 Erosion resistant aperture for a downhole valve or ported flow control tool
12/08/2005CA2567632A1 Downhole isolation tool
12/07/2005EP1214496B1 Electrical surface activated downhole circulating sub
12/01/2005WO2005076803A3 Apparatus for changing wellbore fluid temperature
12/01/2005US20050263318 Structure for fixing an electronic device to a substrate
12/01/2005US20050263279 Pressure monitoring of control lines for tool position feedback
12/01/2005US20050263208 Protected integral gas cylinder with manual on/off and flow control valve
11/2005
11/30/2005CN1702291A Oil riser bleeder
11/30/2005CN1229567C Choke inductor for wireless communication and control in a well, and arrangement method in pipeline
11/29/2005CA2403948C Apparatus and method for downhole well equipment and process management,identification, and actuation
11/29/2005CA2383444C Positive indication system for well annulus cement displacement
11/24/2005US20050257936 Gravity valve for a downhole tool
11/24/2005US20050257927 Valve cage insert
11/23/2005EP1252440B1 Controlling activation of devices
11/23/2005CN2742126Y Downhole anti-spray anti-clip switch
11/23/2005CN2742125Y Liquid control oil sleeve switch valve
11/23/2005CN2742124Y Water tap for drilling and repairing well
11/22/2005US6966380 Valves for use in wells
11/22/2005US6966377 Providing a low pressure condition in a wellbore region
11/22/2005US6966375 Downhole surge pressure reduction and filtering apparatus
11/22/2005US6966373 Inflatable sealing assembly and method for sealing off an inside of a flow carrier
11/17/2005WO2005108833A1 Multiple line administration
11/17/2005WO2005108832A1 In-line multi-port selector valve
11/17/2005WO2005108741A1 Tool trap assembly and method
11/17/2005US20050252661 Casing degasser tool
11/17/2005US20050252660 Split ball valve
11/17/2005DE10327123B4 Vorrichtung zur oberirdischen Steuerung eines unterirdischen Sicherheitsventils und Verfahren zum Erkennen eines undichten Stellgliedes dieser Vorrichtung An apparatus for controlling an above-ground underground safety valve and method for detecting a leaking actuator of this device
11/17/2005CA2573841A1 In-line multi-port selector valve
11/17/2005CA2563081A1 Tool trap assembly and method
11/16/2005EP0852653B1 Method and apparatus for selective horizontal well re-entry using retrievable diverter oriented by logging means
11/16/2005CN2740771Y Self-pulping arrow back pressure valve
11/15/2005US6964304 Technique for maintaining pressure integrity in a submersible system
11/15/2005CA2413745C Well control
11/15/2005CA2322431C Method and apparatus for cementing casing in a wellbore
11/13/2005CA2507105A1 Casing degasser tool
11/10/2005WO2005106186A1 Valve seat
11/10/2005WO2004092528A3 Apparatus for radially expanding and plastically deforming a tubular member
11/09/2005CN2739354Y Steam injection oil-extracting two-pipe well head device
11/08/2005US6962215 Underbalanced well completion
11/03/2005WO2005103443A1 A method and a device for regulating a fluid flow between an outside and an inside of a well pipe
11/03/2005WO2005103442A1 Plug setting and retrieving apparatus
11/03/2005WO2005019600A3 Hydraulically actuated control system for use in a subterranean well
11/03/2005CA2563342A1 A method and a device for regulating a fluid flow between an outside and an inside of a well pipe
11/02/2005CN2737935Y 油田注水井流量调节阀 Oilfield injection wells flow control valve
11/02/2005CN1690357A Openhole perforating device
11/01/2005US6959766 Downhole ball drop tool
11/01/2005US6959762 Method and apparatus for formation damage removal
11/01/2005CA2303489C Production fluid control device for oil/gas wells
10/2005
10/27/2005WO2005100740A2 Flapper opening mechanism
10/27/2005WO2005083228A9 Connection system for subsea flow interface equipment
10/27/2005US20050236191 Drill string valve assembly
10/27/2005US20050236155 Online thermal and watercut management
10/27/2005US20050236154 Isolation assembly for coiled tubing
10/27/2005US20050236050 Multiple line administration
10/27/2005US20050236049 In-line multi-port selector valve
10/26/2005EP1588015A2 Apparatus and methods for drilling a wellbore using casing
10/26/2005EP1350008B1 A sleeve valve for controlling fluid flow between a hydrocarbon reservoir and tubing in a well and method for the assembly of a sleeve valve
10/26/2005EP1350007B1 Device for an opening in an outer sleeve of a sleeve valve and a method for the assembly of a sleeve valve
10/26/2005EP0923690B1 Integrated power and control system
10/26/2005CN2736526Y Seal checkable multitube packer well cleanup valve
10/25/2005US6958704 Permanent downhole, wireless, two-way telemetry backbone using redundant repeaters
10/25/2005US6957703 Closure mechanism with integrated actuator for subsurface valves
10/25/2005US6957699 Downhole shut-in tool
10/25/2005CA2450225C Downhole flow control devices
10/25/2005CA2280034C Tool and method for removing excess cement from the top of a liner after hanging and cementing thereof
10/23/2005CA2504520A1 Drill string valve assembly
10/22/2005CA2591567A1 Method of fracing or stimulating a formation
10/20/2005WO2005098198A1 Tubing hanger running tool and subsea test tree control system
10/20/2005WO2005098197A1 Flow switchable check valve
10/20/2005US20050230118 Apparatus and methods for utilizing a downhole deployment valve
10/19/2005EP1585885A2 Actuator for well-head valve or other similar applications and system incorporating same
10/19/2005CN2734988Y Wellhead check valve for water injection well
10/19/2005CN2734987Y Wellhead two-tube assembling device in oil field
10/19/2005CN2734983Y Blowout preventer for oil well
10/19/2005CN2734981Y Monotube gathering and transferring wellhead assembly
10/19/2005CN1685132A Gravel pack crossover tool with check valve in the evacuation port
10/18/2005US6955194 Protected integral cylinder valve, gas pressure regulator and flow meter, and method for refilling a gas cylinder so equipped
10/18/2005CA2255510C Control line actuation of multiple downhole components
10/18/2005CA2220331C Actuating ball
10/13/2005US20050224235 Multiple Interventionless Actuated Downhole Valve and Method
10/13/2005US20050224234 Flapper opening mechanism
10/13/2005US20050224231 Flow switchable check valve
10/13/2005US20050224228 Method and apparatus for isolating and testing zones during reverse circulation drilling
10/12/2005EP1179116B1 Recovery of production fluids from an oil or gas well
10/12/2005CN2732991Y Throwing ball self catcher type setting ball seat
10/12/2005CN1222679C Downhole device for controlling fluid flow in a well
10/11/2005US6953094 Subterranean well completion incorporating downhole-parkable robot therein
10/11/2005US6953093 Communication tool for accessing a non annular hydraulic chamber of a subsurface safety valve
10/11/2005US6953084 Actuator for well-head valve or other similar applications and system incorporating same
10/11/2005CA2450223C Downhole flow control devices
10/06/2005WO2005093205A1 Inflatable sealing assembly and method for sealing off an inside of a flow carrier
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