| Patents for E21B 34 - Valve arrangements for boreholes or wells (14,685) |
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| 01/20/2015 | US8936095 Methods of magnetic particle delivery for oil and gas wells |
| 01/20/2015 | US8936094 Rotational motion-inducing flow control devices and methods of use |
| 01/20/2015 | US8936079 System, apparatus and process for collecting balls from wellbore fluids containing sand |
| 01/20/2015 | CA2780553C Improved valve with shuttle |
| 01/17/2015 | CA2857381A1 Zone select stage tool system |
| 01/15/2015 | WO2015006424A1 Valve shift detection systems and methods |
| 01/15/2015 | WO2015006109A1 Pump control for auxiliary fluid movement |
| 01/15/2015 | US20150015410 Control system of an actuator for the actuation of submarine devices |
| 01/15/2015 | US20150014065 Core barrel valve assembly |
| 01/15/2015 | US20150014061 Hydraulic actuation of a downhole tool assembly |
| 01/15/2015 | US20150013991 Downhole tool having a shock-absorbing sleeve |
| 01/15/2015 | US20150013990 Double Valve Block and Actuator Assembly Including Same |
| 01/15/2015 | US20150013989 Interval control valve with varied radial spacings |
| 01/15/2015 | US20150013982 Fracturing valve |
| 01/15/2015 | US20150013978 Inflow control valve for controlling the flow of fluids into a generally horizontal production well and method of using the same |
| 01/15/2015 | US20150013971 Test packer and method for use |
| 01/14/2015 | EP2823141A2 Improved segmented seat for wellbore servicing system |
| 01/14/2015 | EP2823137A1 Toe circulation sub |
| 01/14/2015 | EP2823135A2 Remotely activated down hole systems and methods |
| 01/14/2015 | CN204098903U 一种井下管柱试压、泄压工具 A downhole string test pressure relief tool |
| 01/14/2015 | CN204098886U 采油井加药增压装置 Production wells booster dosing device |
| 01/14/2015 | CN204098858U 井下往复开关 Underground Shuttle switch |
| 01/14/2015 | CN204098857U 一种螺杆钻具单流阀 A screw drill check valve |
| 01/14/2015 | CN204098856U 一种潜油电泵采油井多用途单流阀 One kind of multi-purpose production wells submersible pump check valve |
| 01/14/2015 | CN204098855U 注水井井口单流阀 Single injection wells wellhead valve |
| 01/14/2015 | CN104285028A 具有自主闭合功能的井下流体流动控制系统及方法 Downhole fluid flow control system and method with independent closure function |
| 01/14/2015 | CN104278970A 液压式井下分层找卡水开关 Hydraulic underground water stratification looking card switch |
| 01/13/2015 | US8931577 Double valve block and actuator assembly including same |
| 01/13/2015 | US8931570 Reactive in-flow control device for subterranean wellbores |
| 01/13/2015 | US8931569 Method and apparatus for a wellbore assembly |
| 01/13/2015 | US8931567 Control mechanism for subsurface safety valve |
| 01/13/2015 | US8931566 Method and apparatus for autonomous downhole fluid selection with pathway dependent resistance system |
| 01/13/2015 | US8931565 Delayed opening wellbore tubular port closure |
| 01/13/2015 | US8931559 Downhole isolation and depressurization tool |
| 01/10/2015 | CA2856830A1 Downhole tool having a shock-absorbing sleeve |
| 01/10/2015 | CA2856184A1 Fracturing valve |
| 01/10/2015 | CA2820704A1 Fracturing valve |
| 01/08/2015 | WO2015002543A1 Redundancy for subsea electrical actuator control |
| 01/08/2015 | WO2014147032A9 Flow system |
| 01/08/2015 | DE102013011115A1 Vorrichtung zum Einstellen eines Mediendruckes gegenüber einem Umgebungsdruck Apparatus for establishing a media pressure versus ambient pressure |
| 01/07/2015 | EP2820236A1 Adjustable flow control device |
| 01/07/2015 | EP2820235A1 Downhole fluid flow control system having pressure sensitive autonomous operation |
| 01/07/2015 | EP2820167A1 Dlc-coated gate valve in petroleum production or water injection |
| 01/07/2015 | CN204083343U 一种钻杆旋塞阀 One kind kelly cock |
| 01/07/2015 | CN204082118U 一种变径机构 One kind of adjustable mechanism |
| 01/07/2015 | CN204082092U 一种“一球多开”式滑套开关 A kind of "a ball to open" type sleeve switch |
| 01/07/2015 | CN204082091U 一种可变径滑套开关 One kind can switch adjustable sleeve |
| 01/07/2015 | CN204082090U 一种套管外封隔器控制阀系 One kind of external casing packer control valve system |
| 01/07/2015 | CN204082089U 自喷油井可调式节流装置 Since gusher adjustable throttle |
| 01/07/2015 | CN204075197U 一种用于井下施工用的可溶解金属结构 Soluble metal structures used for underground construction |
| 01/07/2015 | CN104271872A 可调节流动控制装置 Adjustable flow control means |
| 01/07/2015 | CN104265943A 一种钻杆旋塞阀 One kind kelly cock |
| 01/07/2015 | CN104265168A 一种动态内偏置指向钻头式旋转导向装置 A dynamic bias point within the rotary drill guide |
| 01/07/2015 | CN102561977B 高压大流量涌水钻孔安全系统及其安装工艺、使用工艺 High pressure and large flow gushing drilling safety systems and their installation process, the use of technology |
| 01/06/2015 | US8925638 Gas injection control devices and methods of operation thereof |
| 01/06/2015 | US8925635 Recovery valve |
| 01/06/2015 | US8925634 Flow restrictor device |
| 01/06/2015 | US8925633 Inflow control device with adjustable orifice and production string having the same |
| 01/06/2015 | US8925628 Wellhead downhole line communication arrangement |
| 01/06/2015 | CA2770926C Downhole backspin retarder for progressive cavity pump |
| 01/06/2015 | CA2747277C Self-orienting crossover tool |
| 01/01/2015 | US20150000982 Bidirectional downhole isolation valve |
| 01/01/2015 | US20150000929 Method for producing hydrocarbon gas from a wellbore and valve assembly |
| 01/01/2015 | US20150000928 Hydraulic system and method of actuating a plurality of tools |
| 01/01/2015 | US20150000927 Fusible alloy plug in flow control device |
| 01/01/2015 | US20150000922 Well Bore Tool With Ball Seat Assembly |
| 01/01/2015 | US20150000921 Well Bore Stimulation Valve |
| 01/01/2015 | US20150000920 Linearly indexing well bore simulation valve |
| 01/01/2015 | US20150000761 Gas lift plunger |
| 12/31/2014 | CN204060660U 一种静压力压差滑套 One kind of static pressure differential sleeve |
| 12/31/2014 | CN204060623U 一种内置式地下抽水回灌两用阀 A built underground pumping recharge dual valve |
| 12/31/2014 | CN204060622U 一种旋转上提式油管泄油器 A rotary tucked Tubing bleeder |
| 12/31/2014 | CN204060621U 固井球座 Cementing tee |
| 12/31/2014 | CN204060620U 固井投球滑套 Cementing pitching sleeve |
| 12/31/2014 | CN204060619U 一种采油树单量堵头防盗器 One kind of Christmas tree a single volume plug alarm |
| 12/31/2014 | CN204060618U 单流阀 Single valve |
| 12/31/2014 | CN204060617U 一种油管专用的隔离装置 One kind of special tubing isolation device |
| 12/31/2014 | CN104254664A 用于从井中生产烃的生产系统 For the production of hydrocarbons from the well production system |
| 12/31/2014 | CN104254663A 管用锚定系统和方法 Effective anchoring system and method |
| 12/31/2014 | CN104254637A 石油开采或注水中dlc涂覆的闸阀 Oil or water in the dlc coated valve |
| 12/30/2014 | US8919730 Magnetically coupled safety valve with satellite inner magnets |
| 12/30/2014 | US8919451 Varying pore size in a well screen |
| 12/30/2014 | US8919446 Compliant dart-style reverse-flow check valve |
| 12/30/2014 | US8919440 System and method for detecting screen-out using a fracturing valve for mitigation |
| 12/30/2014 | US8919439 Single trip multi-zone completion systems and methods |
| 12/30/2014 | US8919433 Resilient foam debris barrier |
| 12/28/2014 | CA2855083A1 Linearly indexing well bore tool |
| 12/25/2014 | US20140374120 Downhole Valve for Fluid Energized Packers |
| 12/25/2014 | US20140374096 Method and apparatus for smooth bore toe valve |
| 12/25/2014 | US20140374090 Apparatus and Method for Opening and Closing an Automatic Valve Installed in the Discharge Line of an Oil Well |
| 12/25/2014 | US20140374089 Automated diversion valve control for pump down operations |
| 12/24/2014 | CN204041037U 采油管柱药液补给装置 Production string liquid supply device |
| 12/24/2014 | CN204041006U 液压井筒隔离阀 Hydraulic wellbore isolation valve |
| 12/24/2014 | CN204041005U 一种新型齿轮齿条式钻井安全阀 A new drilling safety valve rack and pinion |
| 12/24/2014 | CN204041004U 一种金属密封式可调配汽阀 Metal sealed steam valve can be deployed |
| 12/24/2014 | CN204041003U 采油井掺水自动控制阀 Production wells watered automatic control valves |
| 12/24/2014 | CN204041002U 一种页岩气井试气采气井口装置 A gas well test gas shale gas production wellhead |
| 12/24/2014 | CN204041001U 液动井口安全截断装置 Hydraulic wellhead safety shutoff device |
| 12/24/2014 | CN204041000U 一种油田用方钻杆防溅阀 One kind of oil splash with kelly valve |
| 12/24/2014 | CN204040997U 自灌浆浮箍浮鞋 Since the grout float collar float shoe |