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)
06/2014
06/18/2014CN203655232U 油田水井注水管柱封堵用预置底部凡尔 Oilfield water injection wells at the bottom of the column where the pre-closure of Seoul
06/18/2014CN203655231U 泄油防渣器 Drain anti Slag
06/18/2014CN203655230U 不压井底部凡尔 Snubbing Seoul where the bottom
06/18/2014CN203655229U 海洋深井管柱压差式泄压阀 Deep ocean column pressure relief valve
06/18/2014CN203655228U 多级投球可回收式滑套 Multi-level pitching retrievable sleeve
06/18/2014CN203655227U 一种用于完井的压力平衡阀 For completion of the pressure balance valve
06/18/2014CN203655226U 高压顶驱内防喷器 High pressure inside the blowout preventer top drive
06/18/2014CN203655225U 采油气双密封井口装置 Mining and gas wellhead seal double
06/18/2014CN203655224U 新型注脂油杯 Note the new fat Cup
06/18/2014CN103874825A System and method for damping vibration in a drill string using a magnetorheological damper
06/18/2014CN103867161A Steam injection blocking valve
06/18/2014CN102606110B Composite sliding sleeve, fracturing device and method for increasing well fracturing layer section
06/18/2014CN101275459B Controlling flows in a well
06/17/2014US8752631 Annular circulation valve and methods of using same
06/17/2014US8752630 Flow stop valve
06/17/2014US8752629 Autonomous inflow control device and methods for using same
06/17/2014US8752628 Fluid flow control using channels
06/17/2014CA2673051C Linear motor to control hydraulic force
06/12/2014US20140160891 Drillstring combination pressure reducing and signaling valve
06/12/2014US20140158380 Pump Deployment Via Cable
06/12/2014US20140158369 Devices and methods for conveying a tool along a wellbore
06/12/2014US20140158368 Flow bypass device and method
06/12/2014US20140158362 Flapper Equalizer with Integral Spring
06/12/2014US20140158228 Spring assisted active mud check valve with spring
06/11/2014CN203640688U 免提捞可洗井压力开关 Handsfree fishing pressure switch can be washed well
06/11/2014CN203640687U 安全循环阀 Security circulation valve
06/11/2014CN203640686U 高含硫化氢天然气涡流管节流阀压缩膨胀分离加热系统 High H2S gas compression throttle expansion separation vortex tube heating system
06/11/2014CN203640685U 一种井口生产流道快速截断装置 One kind of wellhead production runner rapid shutoff device
06/11/2014CN203640684U 一种机械化修井作业井口防溢阀 One kind of mechanized wellhead workover spill valve
06/11/2014CN203640683U 一种油井油嘴套定压阀 One kind of constant pressure valve cover oil nozzle
06/11/2014CN203640682U 可卸式单流阀 Removable check valve
06/11/2014CN203640680U 双导杆强制复位式浮箍 Double guide rod forced reset float collar
06/11/2014CN203640663U 球阀式油井断杆防喷装置 Well-off valve lever type blowout preventer
06/11/2014CN103857875A Inflow control device
06/11/2014CN103857871A Wellbore flow control devices comprising coupled flow regulating assemblies and methods for use thereof
06/11/2014CN103850665A Shutting down underwater fluid production well
06/11/2014CN103850664A Remote hydraulic well opening and closing device for oil-gas well mouth emergency rescue
06/11/2014CN102410009B Controlled-valve placed well-cementing staged-fracturing well-completion string and hydraulically-controlled switch string
06/10/2014US8746346 Subsea tree workover control system
06/10/2014US8746343 Method and apparatus for wellbore fluid treatment
06/10/2014US8746342 Well completion plugs with degradable components
06/10/2014US8746332 Apparatus and method for recovering fluids from a well and/or injecting fluids into a well
06/10/2014CA2756090C Rotating control head radial seal protection and leak detection systems
06/05/2014WO2014085036A2 Downhole valve assembly and methods of using the same
06/05/2014WO2014084993A1 Monitoring system for borehole operations
06/05/2014US20140151127 Control mechanism
06/05/2014US20140151066 Downhole Hydraulic Control Line
06/05/2014US20140151065 Fast Pressure Protection System and Method
06/05/2014US20140151063 Chemical deepwater stimulation systems and methods
06/05/2014US20140151062 Wellhead Flowback Control System and Method
06/05/2014US20140151052 Kobe sub with inflow control, wellbore tubing string and method
06/04/2014EP2737168A2 Valve
06/04/2014EP2737167A1 Wellbore cementing tool having one way flow
06/04/2014EP2737165A2 Ball valve
06/04/2014EP2737163A1 Wellbore tool with indexing mechanism and method
06/04/2014CN203626793U 可靠式压差滑套 Reliable differential pressure sleeve
06/04/2014CN203626789U 一种无限级压裂喷砂滑套 An infinite level of fracturing sand sleeve
06/04/2014CN203626762U 油井套管稳压增产装置 Well casing regulator stimulation device
06/04/2014CN203626752U 一种自压远控式凝析油密闭回收工艺装置 A self-style remote control pressure condensate recovery process units closed
06/04/2014CN203626736U 防偏磨泄油器 Sucker bleeder
06/04/2014CN203626735U 一种高性能的钻杆单流阀 A high-performance single-flow valve drill
06/04/2014CN203626734U 海洋采油井下作业安全装置 Marine oil Downhole safety device
06/04/2014CN203626733U 一种新型的泄油阀 A new drain valve
06/04/2014CN203626732U 一种泥浆防溅阀 One kind of mud splash valve
06/04/2014CN203626731U 一种钻井用低扭矩固定球阀 One kind of drilling a low torque fixed ball
06/04/2014CN203626730U 一种带压作业反向单流装置 Reverse flow device with a single press operation
06/04/2014CN203626729U 一种稠油水平井井下套压放气阀调压装置 One kind of heavy oil horizontal well downhole casing pressure release valve regulating device
06/04/2014CN203626728U 油井套管阀门防盗气装置 Gas well casing valve theft device
06/04/2014CN203626727U 电泵井套压控制装置 Well pump casing pressure control device
06/04/2014CN203626726U 采油井口集成装置 Wellhead integrated device
06/04/2014CN203626725U 天然气井防砂阀组 Sand valve gas wells
06/04/2014CN203626724U 一种锻制高压固定油嘴阀座装置 One kind of high-pressure forged fixed choke valve device
06/04/2014CN203626723U 一种多功能掺水装置 A multifunctional device watered
06/04/2014CN203626717U 可钻式套管浮箍浮鞋 Drillable casing float collar float shoe
06/04/2014CN103835679A Multifunctional screw drill tool bypass valve
06/04/2014CN103835677A Two-stage sealing bumping-pressure salvageable well completion device for horizontal well
06/04/2014CN102635337B Rapid gas production method implemented after coiled tubing is put in gas well
06/04/2014CN102562004B One-trip tubing string separate-injection coproduction method for thick oil thermal recovery well
06/03/2014US8739887 Check valve for well stimulation
06/03/2014US8739886 Downhole fluid flow control system having a fluidic module with a bridge network and method for use of same
06/03/2014US8739885 Debris barrier for hydraulic disconnect tools
06/03/2014US8739884 Stackable multi-barrier system and method
06/03/2014US8739881 Hydrostatic flapper stimulation valve and method
06/03/2014US8739880 Fluid discrimination for use with a subterranean well
06/03/2014US8739879 Hydrostatically powered fracturing sliding sleeve
06/03/2014US8739862 System for controlling flow of an actuating fluid
06/03/2014CA2676679C A method for providing a preferential specific injection distribution from a horizontal injection well
06/03/2014CA2570250C Flow control system for use in a well
05/2014
05/30/2014WO2014082054A1 Stimulation and production completion system
05/30/2014WO2014081957A1 Downhole tool anchoring system
05/30/2014WO2014081310A1 Subsea xmas tree assembly and associated method
05/30/2014WO2014081306A1 An apparatus for controlling fluid flow in or into a well and method of using same
05/30/2014WO2014055598A3 Apparatus, system, and method for controlling the flow of drilling fluid in a wellbore
05/30/2014WO2014014552A3 Flow control system with interchangeable actuators
05/30/2014WO2013160686A3 Oilfield apparatus and methods of use
05/30/2014WO2013133973A3 Improved segmented seat for wellbore servicing system
05/30/2014WO2013106228A3 Multiple ramp compression packer
05/29/2014US20140144649 Electrically- powered surface - controlled subsurface safety valves
05/29/2014US20140144642 Downhole Valve Assembly and Methods of Using the Same
05/29/2014US20140144616 Preventing flow of undesired fluid through a variable flow resistance system in a well
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