| Patents for E21B 34 - Valve arrangements for boreholes or wells (14,685) |
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| 07/24/2014 | US20140202706 Pressure Testing Valve and Method of Using the Same |
| 07/23/2014 | EP2757228A1 Rotating continuous flow sub |
| 07/23/2014 | EP2756163A1 Wellbore frac tool with inflow control |
| 07/23/2014 | EP2756162A2 Self-controlled inflow control device |
| 07/23/2014 | EP2756158A1 Automated diversion valve control for pump down operations |
| 07/23/2014 | EP2756157A2 Magnetically coupled safety valve with satellite inner magnets |
| 07/23/2014 | EP2756156A2 Method and apparatus for unplugging hydrocarbon drains or vents |
| 07/23/2014 | CN203729947U 箭型止回阀 Arrow-type check valve |
| 07/23/2014 | CN203729946U 一种单流阀 A single-flow valve |
| 07/23/2014 | CN203729936U 一种抽油机井井口取样阀防盗盒 One kind of pumping wells wellhead sampling valve theft case |
| 07/23/2014 | CN103939052A 一种液压式不压井井下开关 A hydraulic snubbing type downhole switch |
| 07/23/2014 | CN103939051A 一种多通阀及该多通阀的加工方法 A multi-pass valve and processing method of the multi-pass valve |
| 07/23/2014 | CN103939050A 一种采油井口用固定式节流阀 One kind wellhead with a fixed throttle |
| 07/23/2014 | CN102472395B 管阀系统和方法 Valve system and method |
| 07/23/2014 | CN102242615B 钻孔瓦斯防喷装置 Drilling gas blowout preventer |
| 07/23/2014 | CN101691833B 带压换阀用安装方法及其装置 Pressure transducer valve installation method and apparatus |
| 07/22/2014 | US8783365 Selective hydraulic fracturing tool and method thereof |
| 07/22/2014 | US8783361 Laser assisted blowout preventer and methods of use |
| 07/22/2014 | US8783360 Laser assisted riser disconnect and method of use |
| 07/22/2014 | US8783351 Method and apparatus for cementing a wellbore |
| 07/22/2014 | US8783341 Composite cement retainer |
| 07/22/2014 | CA2840470A1 Pressure testing valve and method of using the same |
| 07/22/2014 | CA2840428A1 Pressure testing valve and method of using the same |
| 07/22/2014 | CA2746522C Bottom hole assembly with ported completion and methods for fracturing therewith |
| 07/22/2014 | CA2702894C Wellhead flowline protection and testing system with esp speed controller and emergency isolation valve |
| 07/17/2014 | WO2014110523A2 Method and apparatus for sealing tubulars |
| 07/17/2014 | WO2014110522A2 Ball seat apparatus and method |
| 07/17/2014 | WO2014110382A1 Wellbore annular safety valve and method |
| 07/17/2014 | WO2014109856A1 Bi-directional pressure equalization valve |
| 07/17/2014 | WO2014109773A1 Remote-open inflow control device with swellable actuator |
| 07/17/2014 | WO2014109643A1 Petroleum well drill- or coiled tubing string mounted fishing tool |
| 07/17/2014 | WO2014062546A3 Downhole system for facilitating remedial work |
| 07/17/2014 | WO2013109600A3 Methods and apparatuses for wiping subterranean casings |
| 07/17/2014 | US20140199196 Ball seat apparatus and method |
| 07/17/2014 | US20140196908 Internal lockdown snubbing plug |
| 07/17/2014 | US20140196905 Downhole vibratory apparatus |
| 07/17/2014 | US20140196900 Method and apparatus for sealing tubulars |
| 07/17/2014 | US20140196892 Interruptible Pressure Testing Valve |
| 07/16/2014 | CN203716949U 一种热采井带压转抽固定阀控制器 A thermal recovery wells with pressure transfer pump fixed valve controller |
| 07/16/2014 | CN203716934U 一种海水压力驱动的水下隔离阀系统 Seawater pressure-driven underwater isolation valve system |
| 07/16/2014 | CN203716933U 液压式的滑套开关工具 The sleeve switch hydraulic tools |
| 07/16/2014 | CN203716932U 箭型浮阀 Arrow float valve |
| 07/16/2014 | CN203716931U 水平井可开关式固井滑套分段压裂阀 Cementing horizontal wells can switch valve sleeve staged fracturing |
| 07/16/2014 | CN203716930U 板式浮阀 Plate float valve |
| 07/16/2014 | CN203716929U 一种深井安全阀 One kind of deep relief valve |
| 07/16/2014 | CN203716922U 一种新型浮箍 A new float collar |
| 07/16/2014 | CN203716908U 探放水钻孔分流闸阀式孔口装置 Exploration drilling drainage shunt valve orifice device type |
| 07/16/2014 | CN103930647A 用于烃井的阀，设置有该阀的烃井以及该阀的应用 Hydrocarbon wells for the valve provided with the application of the valve and the valve hydrocarbon wells |
| 07/16/2014 | CN103924952A 拉塞式大压差井下分层注水控制装置 Lasse big-tiered underground injection pressure control device |
| 07/16/2014 | CN102536162B 解流安全减压装置 Solution flow safety relief device |
| 07/16/2014 | CN102518420B 一种不限层电控压裂滑套 Any layer of electrically controlled fracturing one kind of sleeve |
| 07/16/2014 | CN102518418B 一种不限层压裂工艺方法 Any layer fracturing process for one kind |
| 07/16/2014 | CN102134980B 一种预紧密封板阀装置 One kind of pretension sealing plate valve device |
| 07/16/2014 | CA2839836A1 Interruptible pressure testing valve |
| 07/15/2014 | US8781743 Monitoring the health of a blowout preventer |
| 07/15/2014 | US8776897 Method and apparatus for multi-drop tool control |
| 07/15/2014 | US8776896 Electronic control system for a downhole tool |
| 07/15/2014 | US8776891 Connection system for subsea flow interface equipment |
| 07/15/2014 | US8776890 Systems and techniques to actuate isolation valves |
| 07/15/2014 | US8776888 Valve for wellbore applications |
| 07/15/2014 | US8776887 Flow stop valve |
| 07/15/2014 | US8776881 Systems, methods and apparatuses for monitoring and recovery of petroleum from earth formations |
| 07/15/2014 | CA2789934C Pressure-activated valve for hybrid coiled tubing jointed tubing tool string |
| 07/15/2014 | CA2778311C Downhole progressive pressurization actuated tool and method of using the same |
| 07/10/2014 | WO2013150283A3 Fluid vent assembly and method of venting fluid |
| 07/10/2014 | US20140191144 Separator for Mechanically Separating an Actuator and an Operator |
| 07/10/2014 | US20140190704 Bi-directional pressure equalization valve |
| 07/10/2014 | US20140190685 Downhole tools having non-toxic degradable elements and methods of using the same |
| 07/09/2014 | EP2751385A1 Valve for hydraulic fracturing through cement outside casing |
| 07/09/2014 | EP2751384A1 Valve for hydraulic fracturing through cement outside casing |
| 07/09/2014 | EP2751383A1 Annular barrier with compensation device |
| 07/09/2014 | EP2751379A2 Injection of fluid into selected ones of multiple zones with well tools selectively responsive to magnetic patterns |
| 07/09/2014 | CN203702110U 水平井管外分段压裂防砂管柱 Horizontal well fracturing sand tube segment string |
| 07/09/2014 | CN203702104U 一种油井用提捞装置 Bailing device with a hydrocarbon well |
| 07/09/2014 | CN203702088U 轴向限位单流阀 Limit single axial flow valve |
| 07/09/2014 | CN203702087U 多功能连通器 Multi-function communication device |
| 07/09/2014 | CN203702086U 旁通阀 Bypass valve |
| 07/09/2014 | CN203702085U 一种井口截止阀 One kind wellhead shut-off valve |
| 07/09/2014 | CN203702084U 一种井口防喷阀 One kind wellhead blowout preventer valve |
| 07/09/2014 | CN203702083U 注水井过滤阀 Filter valve injection wells |
| 07/09/2014 | CN203702082U 液动防盗平板阀 Hydraulic valve theft Tablet |
| 07/09/2014 | CN103917742A 与地下井一起使用的流体辨别 Fluid used in conjunction with underground wells to identify |
| 07/09/2014 | CN103917741A 与地下井一起使用的可变流阻 The variable flow resistance for use in conjunction with underground wells |
| 07/09/2014 | CN103917738A 钻井致动器，处理柱以及其方法 Drilling actuator handle column and its methods |
| 07/09/2014 | CN103912240A 一种油田油水井管柱内控工具 One kind of oil wells string field of internal control tools |
| 07/09/2014 | CN103912239A 提放式管柱内控制工具 Put up in the type column control tools |
| 07/09/2014 | CN101529048B 具有受控元件的安装于井下管路的工具 Tool having a controlled member mounted on the downhole pipe |
| 07/08/2014 | US8770300 Debris barrier for hydraulic disconnect tools |
| 07/08/2014 | CA2813503C Phase-controlled well flow control and associated methods |
| 07/08/2014 | CA2739601C Restrictor valve mounting for downhole screens |
| 07/08/2014 | CA2728820C Method and apparatus for causing pressure variations in a wellbore |
| 07/08/2014 | CA2673055C Pressure-balanced choke system |
| 07/03/2014 | WO2014105055A1 Mitigating swab and surge piston effects across a drilling motor |
| 07/03/2014 | WO2014105054A1 Mitigating swab and surge piston effects in wellbores |
| 07/03/2014 | WO2014105026A1 Pressure indexing sliding side door with rapid actuation |
| 07/03/2014 | WO2014105024A1 Pressure responsive downhole tool having a selectively activatable pressure relief valve and related methods |
| 07/03/2014 | WO2013191783A3 Multi-barrier seal system |
| 07/03/2014 | WO2013126592A9 Well tree hub and interface for retrievable processing modules |
| 07/03/2014 | US20140182863 Straight-bore back pressure valve |
| 07/03/2014 | US20140182861 Casing or Liner Barrier with Remote Interventionless Actuation Feature |