| Patents for E21B 34 - Valve arrangements for boreholes or wells (14,685) |
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| 02/05/2015 | US20150034338 Wellhead pressure plug |
| 02/05/2015 | US20150034334 Inflow control device |
| 02/05/2015 | US20150034333 Annular Flow Control Devices and Methods of Use |
| 02/05/2015 | US20150034332 Method and apparatus for restricting fluid flow in a downhole tool |
| 02/05/2015 | US20150034331 Clutch apparatus and method for resisting torque |
| 02/05/2015 | US20150034330 Tool With Pressure-Activated Sliding Sleeve |
| 02/05/2015 | US20150034329 Downhole Tool and Method |
| 02/05/2015 | US20150034326 System and Method for Managing Heave Pressure from a Floating Rig |
| 02/05/2015 | US20150034324 Valve assembly |
| 02/05/2015 | US20150034323 Sand control system and methodology |
| 02/05/2015 | US20150034298 Intensifier ram blowout preventer |
| 02/04/2015 | EP2831369A1 Auto-filling of a tubular string in a subterranean well |
| 02/04/2015 | CN204140020U 一种用于热采井的井下安全阀强开工具 A thermal recovery wells strong open tools downhole safety valve |
| 02/04/2015 | CN204140019U 一种带压拖动井下封堵阀 A tape sealing valve downhole pressure drag |
| 02/04/2015 | CN204140018U 井下安全阀阀板缓冲机构 Downhole safety valve valve plate buffering mechanism |
| 02/04/2015 | CN204140017U 一种全通径压裂阀 An all-valve bore fracturing |
| 02/04/2015 | CN204140016U 采油树井口取样防盗专用阀门 Christmas tree theft dedicated wellhead sampling valve |
| 02/04/2015 | CN204139966U 一种控制斜向器定向锚定的启动阀 A method for controlling the orientation whipstock anchor start valve |
| 02/04/2015 | CN104334824A 致动闭锁系统 Actuated locking system |
| 02/04/2015 | CN104329073A 延时开启滑套 Delay open sleeve |
| 02/04/2015 | CN104329051A 一种自灌断流器 A self-filling interrupter |
| 02/04/2015 | CN104329034A 螺杆钻具用可闭合中空防掉帽 Can be closed with a screw hole in the cap off the air defense |
| 02/04/2015 | CN102733772B 不压井可进行井下作业油管头采油树 Killing is not available for Downhole Tubing Head Christmas tree |
| 02/03/2015 | US8944171 Method and apparatus for completing a multi-stage well |
| 02/03/2015 | US8944170 Real time downhole intervention during wellbore stimulation operations |
| 02/03/2015 | US8944169 Apparatus and method for fracturing a well |
| 02/03/2015 | US8944167 Multi-zone fracturing completion |
| 02/03/2015 | CA2791719C Flow control arrangement and method |
| 02/03/2015 | CA2736199C Pulse generator |
| 01/29/2015 | WO2015013220A1 Subsea containment separator |
| 01/29/2015 | WO2015012846A1 Adjustable flow control assemblies, systems, and methods |
| 01/29/2015 | WO2015010977A1 Polyarylethersulfone oil and gas recovery articles, method of preparation and method of use |
| 01/29/2015 | US20150027731 Back pressure valve |
| 01/29/2015 | US20150027730 Well tree hub and interface for retrievable processing modules |
| 01/29/2015 | US20150027727 Tubular string displacement assistance |
| 01/29/2015 | US20150027726 Downhole apparatus |
| 01/29/2015 | US20150027725 Downhole activation assembly with sleeve valve and method of using same |
| 01/29/2015 | US20150027724 Electronically-Actuated, Multi-Set Straddle Borehole Treatment Apparatus |
| 01/29/2015 | US20150027723 Selective electrical activation of downhole tools |
| 01/29/2015 | US20150027716 Inflow control device |
| 01/29/2015 | US20150027715 Flow control device and method |
| 01/29/2015 | US20150027706 Electronically-Actuated Cementing Port Collar |
| 01/28/2015 | EP2829684A1 Electronically-actuated, multi-set straddle borehole treatment apparatus |
| 01/28/2015 | EP2828474A2 A flow control device and method |
| 01/28/2015 | EP2828473A1 Alignment system for flapper valve |
| 01/28/2015 | CN204126637U 油田作业气动试压装置 Oilfield operations pneumatic pressure test device |
| 01/28/2015 | CN204126622U 一种完井压裂滑套 One kind of sleeve fracturing completion |
| 01/28/2015 | CN204126598U 多次激活旁通系统 Multiple Activation bypass system |
| 01/28/2015 | CN204126597U 闸门防盗装置 Gate anti-theft device |
| 01/28/2015 | CN204126596U 注水井防盗节流阀 Theft throttle injection wells |
| 01/28/2015 | CN204126566U 一种石油套管接头 A petroleum spigot |
| 01/28/2015 | CN104314564A 一种深部调驱用井口取样器 A dark profile control with a wellhead sampler |
| 01/28/2015 | CN104314551A 自动选井多相流量计量装置 Automatic selection of multiphase flow metering device Wells |
| 01/28/2015 | CN104314544A 可调式环形流量配注阀和注汽管柱 Adjustable annular flow with injection valve and steam injection string |
| 01/28/2015 | CN104314520A 一种滑套式井下安全阀 One kind of downhole safety valve sleeve |
| 01/28/2015 | CN104314519A 井下安全阀阀板缓冲机构 Downhole safety valve valve plate buffering mechanism |
| 01/28/2015 | CN104314518A 开关工具 Switch Tools |
| 01/28/2015 | CN104314517A 用于浓稠油井的恒流量蒸汽注入阀 Constant flow of steam injection valve for thick wells |
| 01/28/2015 | CN104314516A 一种采油井口防喷装置 An oil wellhead blowout preventer |
| 01/28/2015 | CN104314496A 一种注聚井专用投捞堵塞器 One kind of specialized polymer injection well plugging and pulling devices |
| 01/28/2015 | CN103061683B 一种钻柱和完井筛管两用工具 One kind of drill string and completion tools dual screens |
| 01/28/2015 | CN102465712B 超长钻孔高压水射流钻割联动煤层瓦斯抽放与防突系统及方法 Long diamond drilling high pressure water jet cutting linkage coal seam gas drainage and outburst prevention system and method |
| 01/27/2015 | US8939235 Rotating control device docking station |
| 01/27/2015 | US8939217 Hydraulic pulse valve with improved pulse control |
| 01/27/2015 | US8939216 System and method for snubbing under pressure |
| 01/27/2015 | US8939215 Gasless pilot accumulator |
| 01/27/2015 | US8939201 Resilient foam debris barrier |
| 01/27/2015 | CA2672483C Low friction coatings for dynamically engaging load bearing surfaces |
| 01/27/2015 | CA2641707C Valve apparatus |
| 01/26/2015 | CA2863603A1 Dome ceramique de rupture pour regulation de pression |
| 01/26/2015 | CA2857848A1 Electronically-actuated, cementing port collar |
| 01/26/2015 | CA2857844A1 Electronically-actuated, multi-set straddle borehole treatment apparatus |
| 01/26/2015 | CA2857841A1 Downhole activation assembly with sleeve valve and method of using same |
| 01/22/2015 | WO2015009568A2 Atmosphere to pressure ball drop apparatus |
| 01/22/2015 | WO2015009314A1 Downhole fluid flow control system and method having autonomous closure |
| 01/22/2015 | US20150021045 Rotating flow control device for wellbore fluid control device |
| 01/22/2015 | US20150021035 Tubing head spool actuation through landing string |
| 01/22/2015 | US20150021024 Atmosphere to pressure ball drop apparatus |
| 01/22/2015 | US20150021011 Ball launcher for a tubing string |
| 01/21/2015 | EP2826951A2 Zone select stage tool system |
| 01/21/2015 | EP2825727A2 Fluid flow manager |
| 01/21/2015 | EP2825726A1 Methods of removing a wellbore isolation device using a eutectic composition |
| 01/21/2015 | EP2825725A1 Methods of removing a wellbore isolation device using galvanic corrosion |
| 01/21/2015 | EP2825724A1 Improved production valve |
| 01/21/2015 | EP2825723A2 Reduced cavitation oilfield choke |
| 01/21/2015 | CN204113254U Sagd注汽系统 Sagd steam injection system |
| 01/21/2015 | CN204113232U 一种气举工作筒 One kind of gas lift mandrel |
| 01/21/2015 | CN204113220U 注汽开关及注汽管柱 Steam injection and steam injection string switch |
| 01/21/2015 | CN204113219U 一种套管启动滑套 One kind of casing sleeve start |
| 01/21/2015 | CN204113218U 提挂式泄油器 Hanging mention bleeder |
| 01/21/2015 | CN204113217U 返洗阀 Back wash valve |
| 01/21/2015 | CN204113216U 杆式泵不压井作业控制阀座 Snubbing rod pump control valve |
| 01/21/2015 | CN204113215U 投入止回阀 Put a check valve |
| 01/21/2015 | CN204113214U 一种油套连通开关阀 Connecting an oil sets off valve |
| 01/21/2015 | CN204113213U 快速识别油嘴 Quickly identify glib |
| 01/21/2015 | CN104295279A Sagd注汽系统 Sagd steam injection system |
| 01/21/2015 | CN104295268A 一种螺杆钻具单流阀 A screw drill check valve |
| 01/21/2015 | CA2871354A1 Method and apparatus for controlling the flow of fluids into wellbore tubulars |
| 01/20/2015 | US8936100 Drive sleeve and sealing mechanism for non-rising stem gate valve |
| 01/20/2015 | US8936099 Cam mechanism for downhole rotary valve actuation and a method for drilling |