| Patents for E21B 34 - Valve arrangements for boreholes or wells (14,685) |
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| 05/29/2014 | US20140144515 Shutting down an underwater fluid production well |
| 05/29/2014 | CA2842568A1 Apparatus and method for perforating a wellbore casing, and method and apparatus for fracturing a formation |
| 05/28/2014 | CN203614079U 一种带压作业循环底阀 A tape loop bottom valve pressure job |
| 05/28/2014 | CN203614078U 可测压双销合金旋塞阀 Can load two-pin plug alloys |
| 05/28/2014 | CN203614077U 双向取样阀门 Bidirectional sampling valve |
| 05/28/2014 | CN203614072U 油田井口阀门防盗装置 Oilfield wellhead valve anti-theft device |
| 05/28/2014 | CN203614070U 一种捞油井井口控制器 One kind of fishing wellhead controller |
| 05/28/2014 | CN103821478A 一种具有平衡压力作用的旋塞阀 A plug valve having a pressure balancing effect |
| 05/28/2014 | CN103821477A 自平衡井下安全阀 Self-balancing downhole safety valve |
| 05/28/2014 | CN103821476A 一种固定阀 A fixed-valve |
| 05/28/2014 | CA2797836A1 Method and apparatus for sealing and venting of pressurized casings of gas wells |
| 05/27/2014 | US8733450 Tubular seating system and method of seating a plug |
| 05/27/2014 | US8733449 Selectively activatable and deactivatable wellbore pressure isolation device |
| 05/27/2014 | US8733448 Electrically operated isolation valve |
| 05/27/2014 | US8733436 Apparatus and method for recovering fluids from a well and/or injecting fluids into a well |
| 05/22/2014 | WO2014078619A2 Thermally-sensitive triggering mechanism for selective mechanical energization of annular seal element |
| 05/22/2014 | WO2014075160A1 Automatic tubing drain |
| 05/22/2014 | US20140138098 Seat apparatus and method |
| 05/22/2014 | US20140138082 Thermally-sensitive triggering mechanism for selective mechanical energization of annular seal element |
| 05/21/2014 | EP2733304A1 An inflow assembly |
| 05/21/2014 | EP2732128A1 A solenoid-operated valve |
| 05/21/2014 | EP2732127A1 Multi-zone screened frac system |
| 05/21/2014 | CN203604686U 一种柱塞式节流阀 One kind of plunger-type throttle |
| 05/21/2014 | CN203603869U 一种可打捞球座的多级投球压裂滑套 One kind can salvage tee multistage fracturing pitching sleeve |
| 05/21/2014 | CN203603846U 用于油气井作业的全通径分层压裂滑套 Full Bore layered sleeve fracturing operations for oil and gas wells |
| 05/21/2014 | CN203603845U 一种油井用压裂阀 One kind of oil well fracturing valve |
| 05/21/2014 | CN203603844U 压启式循环阀 Pressure Kai-cycle valve |
| 05/21/2014 | CN203603843U 一种注水井井口单流阀 An injection wells single wellhead valve |
| 05/21/2014 | CN203603842U 防喷防泄漏井口安全装置 BOP wellhead leak-proof safety device |
| 05/21/2014 | CN203603841U 硫化一体聚丙烯酸酯复合阀体 Vulcanization one polyacrylate composite body |
| 05/21/2014 | CN203603834U 连续油管用井下投球式堵塞工具 Coiled tubing downhole plugging tool pitching style |
| 05/21/2014 | CN103806888A 井下无限级数控压裂滑套 Sleeve fracturing underground unlimited class NC |
| 05/21/2014 | CN103806886A 一种稠油热采井井下蒸汽封控装置及其封控方法 Seal control device for downhole steam thermal recovery wells and seal control method |
| 05/21/2014 | CN103806878A 海上不压井电泵举升工艺管柱 Maritime snubbing pump lift technology column |
| 05/21/2014 | CN103806867A 可控流量滑套 Controllable flow sleeve |
| 05/21/2014 | CN103806866A 一种井口远控调节紧急切断保护装置 One kind of remote control to adjust the wellhead emergency shut-off protection device |
| 05/20/2014 | US8727315 Ball valve |
| 05/20/2014 | US8727026 Dual isolation mechanism of cementation port |
| 05/20/2014 | US8727018 Charging unit, system and method for activating a wellsite component |
| 05/20/2014 | US8727010 Selective fracturing tool |
| 05/20/2014 | US8727009 Surface signal for flow blockage for a subterranean debris collection apparatus |
| 05/20/2014 | US8726983 Method and apparatus for performing wireline logging operations in an under-balanced well |
| 05/20/2014 | CA2773540C Seat having profiled portion to resist plug extrusion |
| 05/20/2014 | CA2742024C Pressure reversing valve assembly for a down-the-hole percussive drilling apparatus |
| 05/20/2014 | CA2671526C Controlling transient pressure conditions in a wellbore |
| 05/15/2014 | WO2014074412A1 Dissolvable tool and method of dissolving same |
| 05/15/2014 | WO2014074386A2 Well gate valve greasing tool and method of use |
| 05/15/2014 | WO2014074154A1 Well fluid exchange flow control |
| 05/15/2014 | WO2014074093A1 Time delay well flow control |
| 05/15/2014 | WO2014072724A2 Downhole apparatus and method |
| 05/15/2014 | US20140131606 Dummy Undersea Hydraulic Coupling Member |
| 05/15/2014 | US20140131050 Method of making and using a functionally gradient composite tool |
| 05/15/2014 | US20140131029 While Drilling Valve System |
| 05/15/2014 | US20140130893 Shear valve |
| 05/14/2014 | EP2729658A1 System and method for injecting a treatment fluid into a wellbore and a treatment fluid injection valve |
| 05/14/2014 | CN203594410U 稠油热采井有杆泵井下安全阀 Heavy oil thermal recovery wells downhole safety valve rod pump |
| 05/14/2014 | CN103790551A 一种机械式井下套管阀 A mechanical valve downhole casing |
| 05/14/2014 | CN103790541A 三位多功能三管井口装置 Three multi-function three wellhead |
| 05/13/2014 | US8720587 Control mechanism for subsurface safety valve |
| 05/13/2014 | US8720584 Laser assisted system for controlling deep water drilling emergency situations |
| 05/13/2014 | US8720572 High pressure fast response sealing system for flow modulating devices |
| 05/13/2014 | US8720545 Continuous flow drilling systems and methods |
| 05/13/2014 | CA2756093C Rotating control head radial seal protection and leak detection systems |
| 05/13/2014 | CA2665429C Master ball valve with integrated hanger |
| 05/09/2014 | CA2833010A1 Pressure response fracture port tool for use in hydraulic fracturing applications |
| 05/08/2014 | WO2014070737A1 Spool module |
| 05/08/2014 | WO2014070521A1 Side entry flow spool and use thereof |
| 05/08/2014 | WO2014070482A1 Reciprocating and rotating section and methods in a drilling system |
| 05/08/2014 | WO2014070418A2 High temperature back pressure valve |
| 05/08/2014 | WO2013070219A9 Rotational motion-inducing variable flow resistance systems having a sidewall fluid outlet and methods for use thereof in a subterranean formation |
| 05/08/2014 | WO2013032577A3 System and method for high speed hydraulic actuation |
| 05/08/2014 | US20140124214 Dissolvable tool and method of dissolving same |
| 05/08/2014 | US20140124213 Sleeve fracturing assembly, device using the same and method for using the same |
| 05/08/2014 | US20140124212 Flapper valve and method of valving a tubular |
| 05/08/2014 | US20140124209 Gate valve |
| 05/08/2014 | US20140124195 Apparatus and method to remotely control fluid flow in tubular strings and wellbore annulus |
| 05/08/2014 | US20140124058 Control mechanism for subsurface safety valve |
| 05/08/2014 | CA2856307A1 Reciprocating and rotating section and methods in a drilling system |
| 05/07/2014 | EP2728108A1 A downhole stimulation system and a drop device |
| 05/07/2014 | EP2726700A1 Well tool actuator and isolation valve for use in drilling operations |
| 05/07/2014 | CN203584367U 投球式压裂阀机构 Pitching style fracturing valve mechanism |
| 05/07/2014 | CN203584366U 一种新型耐高温耐冲蚀节流油嘴 A new high-temperature-resistant orifice nozzle erosion |
| 05/07/2014 | CN203584357U 一种采油井井口防盗气装置 A wellhead gas theft devices mining |
| 05/07/2014 | CN203584324U 电潜泵气锁油井生产管柱优化装置 ESP airlock oil production string to optimize device |
| 05/07/2014 | CN103781989A 多区域压裂完井 Multi-zone fracturing completion |
| 05/07/2014 | CN102330546B 安置可控阀的裸眼分段压裂完井管柱及液控开关管柱 Controllable valve placement naked eye staged fracturing completion string and fluid control switch column |
| 05/06/2014 | US8714272 Cluster opening sleeves for wellbore |
| 05/06/2014 | US8714267 Debris resistant internal tubular testing system |
| 05/06/2014 | US8714266 Method and apparatus for autonomous downhole fluid selection with pathway dependent resistance system |
| 05/06/2014 | US8714265 Down hole valve device |
| 05/06/2014 | US8714264 Dual barrier side pocket mandrel |
| 05/06/2014 | US8714261 Subsea deployment of submersible pump |
| 05/06/2014 | CA2803212C Series configured variable flow restrictors for use in a subterranean well |
| 05/06/2014 | CA2749636C Downhole tool assembly with debris relief, and method for using same |
| 05/06/2014 | CA2718625C Hydraulic bi-directional rotary isolation valve |
| 05/06/2014 | CA2657215C Liquid purge valve |
| 05/06/2014 | CA2610563C Flow reversing apparatus and methods of use |
| 05/01/2014 | WO2014066627A1 Hydraulic high pressure valve controller using the in-situ pressure difference |
| 05/01/2014 | WO2014066567A1 Coiled tubing pump down system |
| 05/01/2014 | WO2014066071A1 Downhole flow control, joint assembly and method |