| Patents for E21B 34 - Valve arrangements for boreholes or wells (14,685) |
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| 11/04/2010 | US20100276143 Method and device for cleaning and sealing a well |
| 11/04/2010 | CA2784569A1 Selective fracturing tool |
| 11/04/2010 | CA2752773A1 Valve system for drilling systems |
| 11/04/2010 | CA2731161A1 Selective fracturing tool |
| 11/03/2010 | EP2245264A2 System for drilling under-balanced wells |
| 11/03/2010 | EP2245263A1 System for pulse-injecting fluid into a borehole |
| 11/03/2010 | CN201620828U Jet drainage device for cluster wells |
| 11/03/2010 | CN201620823U Horizontal well pressure control electric multiple-current test valve |
| 11/03/2010 | CN201620822U Versatile downhole sand control flow controller of gas well |
| 11/03/2010 | CN201620821U Oil well electric heating heat-preservation oil nozzle sleeve |
| 11/03/2010 | CN201620768U Self-spraying and lifting interactive column |
| 11/02/2010 | US7823689 Closed-loop downhole resonant source |
| 11/02/2010 | US7823660 Apparatus and methods for drilling a wellbore using casing |
| 11/02/2010 | US7823648 Downhole safety valve apparatus and method |
| 11/02/2010 | US7823640 Wellhead flowline protection and testing system with ESP speed controller and emergency isolation valve |
| 11/02/2010 | US7823637 Delayed acting gravel pack fluid loss valve |
| 11/02/2010 | US7823633 Valve apparatus |
| 10/28/2010 | WO2010124303A2 Processes and systems for treating oil and gas wells |
| 10/28/2010 | WO2010123588A2 New and improved fracture valve and related methods |
| 10/28/2010 | WO2010123587A2 New and improved actuators and related methods |
| 10/28/2010 | WO2010123585A2 New and improved blapper valve tools and related methods |
| 10/28/2010 | WO2010089728A3 Mechanical sliding sleeve |
| 10/28/2010 | US20100270030 Full function downhole valve |
| 10/28/2010 | CA2759868A1 Processes and systems for treating oil and gas wells |
| 10/28/2010 | CA2759803A1 New and improved actuators and related methods |
| 10/28/2010 | CA2759799A1 New and improved blapper valve tools and related methods |
| 10/28/2010 | CA2759798A1 New and improved fracture valve tools and related methods |
| 10/27/2010 | EP2243924A1 Methods and Associated Apparatus for Downhole Data Retrieval, Monitoring and Tool Actuation |
| 10/27/2010 | CN201615239U 压力平衡旋塞阀 Pressure balanced plug valves |
| 10/27/2010 | CN201614912U 高温电泵井用防污染阀 Pollution prevention valve with a high temperature pump wells |
| 10/27/2010 | CN201614910U 集成式井口流程装置 Integrated wellhead process equipment |
| 10/27/2010 | CN101871335A Pressure-regulating, throttling and discharging device for casinghead gas |
| 10/26/2010 | US7819196 Method for operating actuator and an actuator device for use in drainage pipe used for producing oil and/or gas |
| 10/26/2010 | US7819194 Flow regulator for use in a subterranean well |
| 10/26/2010 | CA2459567C Adjustable well screen assembly |
| 10/21/2010 | WO2010120419A1 Systems and methods for providing zonal isolation in wells |
| 10/21/2010 | WO2010120191A2 Sealing arrangement for a down hole valve |
| 10/21/2010 | US20100263876 Combination down hole tool |
| 10/21/2010 | CA2758720A1 Sealing arrangement for a down hole valve |
| 10/21/2010 | CA2755252A1 Systems and methods for providing zonal isolation in wells |
| 10/20/2010 | EP2240666A2 Controller for hydraulically operated downhole tool |
| 10/20/2010 | CN201610747U 套管气回收井口装置 Wellhead casing head gas recycling |
| 10/20/2010 | CN201610739U 油田注水井口玻璃钢电加热保温箱 Oilfield water injection wellhead fiberglass electrically heated incubator |
| 10/20/2010 | CN201610738U 螺旋调节远程压力控制阀 Remote pressure control valve regulating the spiral |
| 10/20/2010 | CN201610737U 防拆卸易关闭的采油井口阀门 Tamper-resistant and easy off wellhead valve |
| 10/20/2010 | CN201610736U 油井取样防盗装置 Well sampling anti-theft device |
| 10/20/2010 | CN201610735U 一种回压阀 One kind of back pressure valve |
| 10/20/2010 | CN101868594A Downhole lubricator valve |
| 10/19/2010 | US7814982 Downhole non-return valve and method |
| 10/19/2010 | US7814981 Fracture valve and equalizer system and method |
| 10/19/2010 | CA2565998C Full bore injection valve |
| 10/19/2010 | CA2538264C Internal blow out preventer ball and seat |
| 10/14/2010 | WO2010092350A3 Stage cementing tool |
| 10/14/2010 | US20100258319 Back pressure valve |
| 10/13/2010 | CN201606035U 新型气路远程控制三位四通换向阀密封结构 The new remote control three-way pneumatic valve seal structure |
| 10/13/2010 | CN201606034U 一种差压法抽油井套管石油伴生气回收装置 One kind of differential pressure pumping oil well casing associated gas recovery |
| 10/13/2010 | CN201606033U 切割压力控制器 Cutting pressure controller |
| 10/13/2010 | CN201606027U 一体多阀式采油树井口装置 One multi-valve-tree wellhead |
| 10/12/2010 | US7810575 Isolation system comprising a plug and a circulation valve and method of use |
| 10/12/2010 | US7810571 Downhole lubricator valve |
| 10/12/2010 | US7810564 Memory logging system for determining the condition of a sliding sleeve |
| 10/07/2010 | WO2010114741A2 Adjustable flow control devices for use in hydrocarbon production |
| 10/07/2010 | WO2010114383A1 Activating tool |
| 10/07/2010 | WO2010112810A2 System and method for servicing a wellbore |
| 10/07/2010 | US20100252281 Downhole flow control tool and method |
| 10/07/2010 | US20100252250 Well Screens Constructed Utilizing Pre-Formed Annular Elements |
| 10/07/2010 | CA2756176A1 System and method for servicing a wellbore |
| 10/06/2010 | CN201599412U 注水阀 Note valve |
| 10/06/2010 | CN201599004U 适用于失控油气井的抢装止回阀装置 Applies to runaway oil and gas wells grab loaded check valve device |
| 10/06/2010 | CN201599003U 采气井口装置 Gas Wellhead Equipment |
| 10/05/2010 | US7806184 Fluid operated well tool |
| 09/30/2010 | WO2010111158A2 Active mud valve system |
| 09/30/2010 | US20100243269 Well Tools Utilizing Swellable Materials Activated on Demand |
| 09/30/2010 | US20100243268 System and method for snubbing under pressure |
| 09/30/2010 | US20100243267 Control mechanism for subsurface safety valve |
| 09/30/2010 | US20100243266 System and method for longitudinal and lateral jetting in a wellbore |
| 09/30/2010 | US20100243265 Drilling fluid flow diverter |
| 09/30/2010 | US20100243259 Well Tool With Combined Actuation of Multiple Valves |
| 09/30/2010 | US20100243253 Method and apparatus for moving a high pressure fluid aperture in a well bore servicing tool |
| 09/30/2010 | US20100243243 Active In-Situ Controlled Permanent Downhole Device |
| 09/29/2010 | EP2233688A1 Apparatus and method for recovering fluids from a well and/or injecting fluids into a well |
| 09/29/2010 | EP2233687A1 Apparatus and method for recovering fluids from a well and/or injecting fluids into a well |
| 09/29/2010 | EP2233686A1 Apparatus and method for recovering fluids from a well and/or injecting fluids into a well |
| 09/29/2010 | EP2233685A2 Well tool with combined actuation of multiple valves |
| 09/29/2010 | EP2232009A2 Zonal isolation of telescoping perforation appartus with memory based material |
| 09/29/2010 | EP2232007A2 Mechanical actuator with electronic adjustment |
| 09/29/2010 | EP2232006A1 Improved seal |
| 09/29/2010 | CN201593400U Energy-saving emission-reducing sleeving device |
| 09/29/2010 | CN201593397U Downhole safety valve for oil and gas wells |
| 09/29/2010 | CN201593396U Hydraulic well opening valve |
| 09/29/2010 | CN201593395U Double-control water injection well mouth check valve |
| 09/29/2010 | CN201593390U Energy-saving and emission-reducing oil-gas burglar alarm |
| 09/29/2010 | CN1930369B Expander for expanding a tubular element |
| 09/29/2010 | CN1702291B Oil riser bleeder |
| 09/29/2010 | CN101117885B Well control method for changing valve under pressure |
| 09/28/2010 | US7802627 Remotely operated selective fracing system and method |
| 09/28/2010 | CA2594015C Apparatus and methods to remove impurities at a sensor in a downhole tool |
| 09/23/2010 | US20100236793 Activating mechanism |
| 09/23/2010 | US20100236790 Control of well tools utilizing downhole pumps |
| 09/23/2010 | US20100236781 Method and apparatus for perforating multiple wellbore intervals |