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)
07/2012
07/04/2012EP2470749A2 Method and apparatus for dropping a pump down plug or ball
07/04/2012CN202300357U Well cementing staged fracturing well completion pipe column with controllable valves and hydraulic control switch pipe column
07/04/2012CN202300336U 地面液压控制油管注入功能的电泵采油管柱 Ground hydraulic control tubing injection pump production string functions
07/04/2012CN202300332U 用于柱塞采气系统的井下分级装置及多级柱塞采气系统 Classification device for downhole plunger gas production systems and multi-stage piston gas recovery system
07/04/2012CN202300318U Hydraulic control switch tool for driving fracturing well completion controllable valve
07/04/2012CN202300317U 旋转泄油器 Rotary bleeder
07/04/2012CN202300316U 油水井液控式井下流量控制阀 Oil wells, downhole flow control pilot valve
07/04/2012CN202300315U Underground turbine shunting device
07/04/2012CN202300314U 防盗阀门 Security valve
07/04/2012CN202300313U 油井取样阀防盗装置 Oil sampling valve anti-theft device
07/04/2012CN202300312U 注水井自动调节单向截止阀 Injection wells shut-off valves automatically adjust the way
07/04/2012CN202300288U 一种井口装置 One kind of wellhead
07/04/2012CN1748072B Actuator for well-head valve or other similar applications and system incorporating same
07/04/2012CN1690357B Openhole perforating device
07/04/2012CN102536163A Separated type rotary oil draining device
07/04/2012CN102536162A Reliving flow safety pressure reducing device
07/04/2012CN102536161A Tubing hanger shuttle valve
07/04/2012CN102536132A Drilling tool joint convenient for inclinometry operation
07/03/2012US8210266 Drill pipe
07/03/2012US8210258 Wireline-adjustable downhole flow control devices and methods for using same
06/2012
06/28/2012WO2012087753A2 Method for effective de-oxygenation of product containers for use as containers for oxygen sensitive products
06/28/2012WO2012047837A3 Remotely controlled apparatus for downhole applications, components for such apparatus, remote status indication devices for such apparatus, and related methods
06/28/2012US20120160524 Completion assembly and a method for stimulating, segmenting and controlling erd wells
06/28/2012US20120160515 System and Method for Operating Multiple Valves
06/28/2012US20120160514 Auxiliary Flow Line Filter for Sampling Probe
06/28/2012US20120160513 Tubing hanger shuttle valve
06/28/2012US20120160507 Apparatus and method for recovering fluids from a well and/or injecting fluids into a well
06/28/2012US20120160504 Flow Diverter
06/28/2012US20120160503 Surface Signal for Flow Blockage for a Subterranean Debris Collection Apparatus
06/28/2012US20120160484 Method of Improving Waterflood Performance using Barrier Fractures and Inflow Control Devices
06/28/2012US20120160483 Hybrid Dump Bailer and Method of Use
06/28/2012US20120160478 High strength dissolvable structures for use in a subterranean well
06/28/2012CA2822013A1 Downhole apparatus and method
06/28/2012CA2821912A1 An exit assembly with a fluid director for inducing and impeding rotational flow of a fluid
06/27/2012EP2469013A2 Flow stop valve
06/27/2012EP2467566A2 Self aligning mud saver valve seat
06/27/2012CN202284462U Uniform steam injection bleeder for horizontal well
06/27/2012CN102518420A Unlimited-layer electrically controlled fracturing sliding sleeve
06/27/2012CN102518418A Unlimited layer fracturing process
06/27/2012CN101260793B Horizontal sand spade for oil well
06/26/2012CA2660213C Safety valve torsional spring assembly and method
06/26/2012CA2544594C Method and system for injecting a treatment fluid into a well
06/26/2012CA2398032C Open well plunger-actuated gas lift valve and method of use
06/21/2012WO2012082492A2 Controlling flow between a wellbore and an earth formation
06/21/2012WO2012082491A2 Geothermal energy production
06/21/2012WO2012082489A2 Restricting production of gas or gas condensate into a wellbore
06/21/2012WO2012082488A2 Controlling flow of steam into and/or out of a wellbore
06/21/2012WO2012082469A2 Plural barrier valve system with wet connect
06/21/2012WO2012082333A2 Intelligent pressure actuated release tool
06/21/2012WO2012081987A1 An arrangement and method for water shut-off in an oil and/or gas well
06/21/2012WO2012080487A1 Downhole completion
06/21/2012WO2012080485A1 An inflow assembly
06/21/2012WO2012033638A4 Series configured variable flow restrictors for use in a subtrerranean well
06/21/2012WO2012005830A4 Injection valve with indexing mechanism
06/21/2012WO2011117602A3 Mechanical counter
06/21/2012WO2011117601A3 Downhole actuating apparatus
06/21/2012US20120152569 Plural barrier valve system with wet connect
06/21/2012US20120152564 Horizontal production tree and method of use thereof
06/21/2012US20120152561 Emergency subsea wellhead closure devices
06/21/2012US20120152553 Subsea arrangement
06/21/2012US20120152552 Pressure range delimited valve with close assist
06/21/2012US20120152550 Method for Inducing Fracture Complexity in Hydraulically Fractured Horizontal Well Completions
06/21/2012US20120152527 Exit assembly with a fluid director for inducing and impeding rotational flow of a fluid
06/21/2012CA2821841A1 Downhole completion
06/21/2012CA2821835A1 An inflow assembly
06/21/2012CA2821271A1 Geothermal energy production
06/21/2012CA2821267A1 Restricting production of gas or gas condensate into a wellbore
06/21/2012CA2821264A1 Controlling flow of steam into and/or out of a wellbore
06/21/2012CA2819711A1 Controlling flow between a wellbore and an earth formation
06/21/2012CA2819371A1 Wellbore apparatus and methods for multi-zone well completion, production and injection
06/20/2012EP2466059A1 Sliding sleeve
06/20/2012EP2466058A1 An inflow assembly
06/20/2012EP2464817A1 Actuator and method
06/20/2012EP2464816A2 System and method for servicing a wellbore
06/20/2012EP2464815A2 Repeatable, compression set downhole bypass valve
06/20/2012EP2464814A2 Tubular valving system and method
06/20/2012EP2464813A1 Dual barrier plug system for a wellhead
06/20/2012CN202280447U Control valve used for fracturing well completion and capable of being opened and closed
06/20/2012CN202280446U 井口三向导流器 Wellhead three wizard converter
06/20/2012CN102510930A Fracturing and gravel packing tool with multi movement wash pipe valve
06/20/2012CA2762504A1 Pressure range delimited valve with close assist
06/19/2012US8201632 Downhole valve assembly and actuation device for a downhole valve assembly
06/19/2012US8201624 Clustered wellhead trunkline protection and testing system with ESP speed controller and emergency isolation valve
06/19/2012CA2651686C Apparatus and methods for utilizing a downhole deployment valve
06/19/2012CA2626948C Metal-to-metal non elastomeric seal stack
06/19/2012CA2412072C Method and apparatus for wellbore fluid treatment
06/14/2012WO2012078307A2 Stackable multi-barrier system and method
06/14/2012WO2012078305A2 Stackable multi-barrier system and method
06/14/2012WO2012047863A3 Remotely controlled apparatus for downhole applications and related methods
06/14/2012US20120145406 BOP Stack with a Universal Intervention Interface
06/14/2012US20120145404 Controlling flow between a wellbore and an earth formation
06/14/2012US20120145403 Intelligent Pressure Actuated Release Tool
06/14/2012US20120145402 Debris removal method and assembly
06/14/2012US20120145394 Rotatable Wireline Tool of Enhanced Hydraulic Drive Consistency
06/14/2012US20120145385 Downhole Fluid Flow Control System and Method Having Direction Dependent Flow Resistance
06/14/2012US20120145382 System and Method for Operating Multiple Valves
06/14/2012US20120145378 Bottom set downhole plug
06/13/2012EP2463477A1 System and method for operating multiple valves
06/13/2012EP2064411B1 Downhole hydraulic control system with failsafe features
06/13/2012CN202273650U 固井阀 Cementing valve
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