| Patents for E21B 34 - Valve arrangements for boreholes or wells (14,685) |
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| 09/08/2011 | US20110214881 Flow control arrangement and method |
| 09/08/2011 | US20110214876 Flow path control based on fluid characteristics to thereby variably resist flow in a subterranean well |
| 09/07/2011 | EP2094939B1 Control line hydrostatic minimally sensitive control system |
| 09/07/2011 | CN201963305U 多功能取样阀门 Multifunction sampling valve |
| 09/07/2011 | CN201963258U 一种智能井井下滑套锁紧装置 An intelligent well downhole sleeve locking device |
| 09/07/2011 | CN201963257U 一种组合式二级节流阀 A modular two throttle |
| 09/07/2011 | CN201963256U 大斜度井单向液压泄油器 High angle wells unidirectional hydraulic oil leak |
| 09/07/2011 | CN201963255U 永磁防盗掺水井口组合装置 Anti-theft device neat combination of permanent magnet wellhead |
| 09/07/2011 | CN201963254U 原油管线免放空取样阀 Vent-free sampling valve crude oil pipeline |
| 09/07/2011 | CN201963253U 一种油井套管气安全取样阀门 One kind of well casing gas sampling valve safety |
| 09/07/2011 | CN201963252U 采油井口防盗解堵取样阀 Wellhead theft plugging sampling valve |
| 09/07/2011 | CN201963243U 智能式全自动抽油杆密封防喷器 Intelligent automatic rod seal BOP |
| 09/07/2011 | CN201963232U 气井井口保护器阀芯拆装工具 Gas wellhead protection spool removal tools |
| 09/07/2011 | CN101358515B Well cleanout shunt |
| 09/06/2011 | CA2450551C Technique for preventing deposition products from impeding the motion of a movable component |
| 09/01/2011 | WO2011106614A2 Mechanical lock with pressure balanced floating piston |
| 09/01/2011 | WO2011104516A2 Pressure-activated valve for hybrid coiled tubing jointed tubing tool string |
| 09/01/2011 | WO2011047163A4 Flapper valve and method |
| 09/01/2011 | WO2010127457A8 Sliding sleeve sub and method and apparatus for wellbore fluid treatment |
| 09/01/2011 | US20110209880 Drill String Valve Actuator with Inflatable Seals |
| 09/01/2011 | US20110209874 Tubing Pressure Insensitive Control System |
| 09/01/2011 | US20110209873 Method and apparatus for single-trip wellbore treatment |
| 09/01/2011 | US20110209869 Method and apparatus to release energy in a well |
| 09/01/2011 | US20110209868 Fracturing a stress-altered subterranean formation |
| 09/01/2011 | CA2789934A1 Pressure-activated valve for hybrid coiled tubing jointed tubing tool string |
| 08/31/2011 | CN201953354U 移动式井口气收集系统 Well tone mobile collection system |
| 08/31/2011 | CN201953353U 活塞式螺杆钻具旁通阀 Bypass valve piston screw drill |
| 08/31/2011 | CN201953352U 全能浮阀 Almighty float valve |
| 08/31/2011 | CN201953351U 滑套泄油器 Sleeve bleeder |
| 08/31/2011 | CN201953350U 防堵塞放空装置 Anti-clogged vent means |
| 08/31/2011 | CN201953349U 井口防冻防盗取样装置 Wellhead antifreeze theft sampling device |
| 08/30/2011 | US8006952 Low power actuator and valve-actuator combination |
| 08/30/2011 | US8006772 Multi-cycle isolation valve and mechanical barrier |
| 08/30/2011 | US8006768 System and method for controlling a downhole actuator |
| 08/30/2011 | US8006767 Flow control system having a downhole rotatable valve |
| 08/30/2011 | US8006753 Hydraulic connector apparatuses and methods of use with downhole tubulars |
| 08/30/2011 | CA2604654C Direct proportional surface control system for downhole choke |
| 08/26/2011 | CA2732128A1 Drill string valve actuator with inflatable seals |
| 08/25/2011 | WO2011103092A1 Apparatus and method for valve actuation |
| 08/25/2011 | WO2011102877A1 Running tool with independent housing rotation sleeve |
| 08/25/2011 | WO2011102732A2 Valve system |
| 08/25/2011 | WO2011101344A2 A valve device for a side pocket or a sub in a well |
| 08/25/2011 | WO2011100834A1 Magnets-based tool for pulsing injected liquid |
| 08/25/2011 | WO2005049954A3 Gravel pack crossover tool with single position multi-function capability |
| 08/25/2011 | US20110203809 Wellbore bypass tool and related methods of use |
| 08/25/2011 | US20110203808 Disposal of well control fluids |
| 08/25/2011 | US20110203807 Multistage Production System and Method |
| 08/25/2011 | US20110203806 Arrangement for directing a fluid flow |
| 08/25/2011 | US20110203805 Valving Device and Method of Valving |
| 08/25/2011 | US20110203802 Pressure control device with remote orientation relative to a rig |
| 08/25/2011 | US20110203801 System and method for formation isolation |
| 08/25/2011 | US20110203800 Step Ratchet Fracture Window System |
| 08/25/2011 | US20110203794 Apparatus and Method for Cementing Liner |
| 08/25/2011 | US20110203789 Pressure equalising devices |
| 08/25/2011 | CA2790113A1 Valve system |
| 08/25/2011 | CA2790081A1 Magnets-based tool for pulsing injected liquid |
| 08/25/2011 | CA2789302A1 A valve device for a side pocket or sub in a well |
| 08/24/2011 | EP2360347A2 Expandable ball seat |
| 08/24/2011 | CN201943693U 内置式防冻防盗取样装置 Built-in antifreeze theft sampling device |
| 08/24/2011 | CN201943681U 一种蒸汽驱井抢喷装置 A steam drive well grab the spray device |
| 08/24/2011 | CN201943669U 一种油井套管气回收装置 One kind of well casing gas recovery |
| 08/24/2011 | CN201943658U 旋转提油管泄油器 Rotating mention oil pipeline leak |
| 08/24/2011 | CN201943657U 放空阀 Vent valve |
| 08/24/2011 | CN201943656U 一种防盗放气阀 An anti-theft bleed valve |
| 08/24/2011 | CN201943655U 油井放套气防溢油装置 Well Fangtaoqifang spill device |
| 08/24/2011 | CN201943654U 取压取样组合阀 Pressure sampling combination valve |
| 08/24/2011 | CN201943653U 防盗取样阀 Theft sampling valve |
| 08/24/2011 | CN201943635U 采油井口套管防盗装置 Wellhead casing anti-theft device |
| 08/24/2011 | CN102162345A Air relief valve |
| 08/23/2011 | US8002042 Actuatable subsurface safety valve and method |
| 08/23/2011 | US8002040 System and method for controlling flow in a wellbore |
| 08/23/2011 | US8002039 Valve for controlling the flow of fluid between an interior region of the valve and an exterior region of the valve |
| 08/18/2011 | WO2011100748A2 Unlimited downhole fracture zone system |
| 08/18/2011 | WO2011100176A1 Autonomous inflow control device and methods for using same |
| 08/18/2011 | WO2011100160A1 Injection or other system with anti-thermal lockdown mechanism and related method |
| 08/18/2011 | WO2011098602A1 Valve device |
| 08/18/2011 | WO2011072145A3 Dual path subsea control system |
| 08/18/2011 | WO2011068690A3 Gas lift valve |
| 08/18/2011 | US20110198100 Expandable Ball Seat |
| 08/18/2011 | US20110198097 Autonomous inflow control device and methods for using same |
| 08/18/2011 | US20110198096 Unlimited Downhole Fracture Zone System |
| 08/18/2011 | US20110198082 Downhole tool assembly with debris relief, and method for using same |
| 08/18/2011 | CA2789598A1 Injection or other system with anti-thermal lockdown mechanism and related method |
| 08/18/2011 | CA2789588A1 Valve device |
| 08/18/2011 | CA2789413A1 Autonomous inflow control device and methods for using same |
| 08/17/2011 | EP2357315A1 Running tool with independent housing rotation sleeve |
| 08/17/2011 | EP2356311A1 Valve device and associated methods of selectively communicating between an interior and an exterior of a tubular string |
| 08/17/2011 | EP2132403B1 Drilling head for reboring a stuck valve |
| 08/17/2011 | EP1226336B1 Drilling formation tester, apparatus and methods of testing and monitoring status of tester |
| 08/17/2011 | CN201934081U 一种智能井井下层位选择液压解码装置 An intelligent wells underground layers selection hydraulic decoding device |
| 08/17/2011 | CN201934073U 油井套管进液变向器 Well casing inlet to the filter change |
| 08/17/2011 | CN201934060U 滑套阀 Sleeve valve |
| 08/17/2011 | CN201934059U 遥感信号输出单向阀 Remote sensing signal output check valve |
| 08/17/2011 | CN201934058U 油井防盗取样阀 Well theft sampling valve |
| 08/17/2011 | CN201934057U 一种闸阀闸板移动控制装置 One kind of valve gate mobile control device |
| 08/17/2011 | CN201934047U 气动节流管汇 Pneumatic choke manifold |
| 08/17/2011 | CN102159789A Seat apparatus and method |
| 08/17/2011 | CN102155184A Quick release value for well head pneumatic safety valve |
| 08/17/2011 | CN102155183A Integral combination valve |
| 08/17/2011 | CN102155180A Multi-valve production tree wellhead device |