| Patents for E21B 34 - Valve arrangements for boreholes or wells (14,685) |
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| 09/06/2006 | CN2813879Y Air gun type well head connector |
| 09/06/2006 | CN1828008A Steering valve for down-hole one-well-two-pump process |
| 09/05/2006 | US7100700 Downhole ball dropping apparatus |
| 09/05/2006 | US7100690 Gravel packing apparatus having an integrated sensor and method for use of same |
| 09/05/2006 | US7100686 Controlled-pressure drop liner |
| 09/05/2006 | CA2491444C Method and apparatus for remote control of multilateral wells |
| 09/01/2006 | CA2538411A1 Balance line safety valve with tubing pressure assist |
| 08/31/2006 | WO2006090168A1 Valve |
| 08/31/2006 | US20060192160 Linear hydraulic stepping actuator with fast close capabilities |
| 08/31/2006 | US20060191679 Triple valve blow out preventer |
| 08/30/2006 | EP1332276B1 Flow controller with downhole pumping system |
| 08/30/2006 | CN2811563Y Recovering and utilizing device for gas from wellhead casing |
| 08/30/2006 | CN2811555Y Automatic control type downhole bidirectional high-pressure safety blowout-prevention valve |
| 08/30/2006 | CN2811553Y Rectangular wire-added packing set |
| 08/29/2006 | US7096945 Sand control screen assembly and treatment method using the same |
| 08/29/2006 | US7096937 Flow completion system |
| 08/29/2006 | CA2418759C Formation isolation valve |
| 08/24/2006 | WO2006088372A1 System and method for well intervention |
| 08/24/2006 | WO2006087509A1 Valve assembly |
| 08/24/2006 | WO2006042060A3 Downhole safety valve apparatus and method |
| 08/24/2006 | US20060185852 Reclosable mechanical annular flow valve |
| 08/23/2006 | EP1325207B1 Gas operated pump for use in a wellbore |
| 08/23/2006 | EP1305501B1 Method for treating multiple wellbore intervals |
| 08/23/2006 | CN2809207Y Down-hole one-way constant pressure valve |
| 08/23/2006 | CN2809206Y High seal oil release device for oil well |
| 08/23/2006 | CN1271311C Safety cut-off flat plate valve of well mouth |
| 08/22/2006 | US7093674 Drilling formation tester, apparatus and methods of testing and monitoring status of tester |
| 08/22/2006 | US7093671 Pneumatic rock-boring device and method for starting such a device |
| 08/22/2006 | US7093660 Well operations system |
| 08/22/2006 | CA2438359C Downhole packer |
| 08/17/2006 | WO2006086591A1 One trip cemented expandable monobore liner system and method |
| 08/17/2006 | WO2006086590A1 One trip cemented expandable monobore liner system and method |
| 08/17/2006 | WO2006086589A1 One trip cemented expandable monobore liner system and method |
| 08/17/2006 | WO2006086165A2 Flow valve and method |
| 08/17/2006 | WO2006085870A1 Flow regulator for use in a subterranean well |
| 08/17/2006 | WO2002033215A8 Dual valve well control in underbalanced wells |
| 08/16/2006 | EP1689971A1 Method and system for injecting a treatment fluid into a well |
| 08/16/2006 | CN2806755Y High-pressure tee |
| 08/15/2006 | US7090033 Drill string shutoff valve |
| 08/15/2006 | US7090027 Casing hanger assembly with rupture disk in support housing and method |
| 08/15/2006 | US7090020 Multi-cycle dump valve |
| 08/15/2006 | CA2433645C System and method for fail-safe disconnect from a subsea well |
| 08/10/2006 | WO2006043999A8 Cast flapper with hot isostatic pressing treatment |
| 08/10/2006 | US20060175092 Flow valve and method |
| 08/10/2006 | US20060175065 Water shut off method and apparatus |
| 08/10/2006 | US20060175052 Flow regulator for use in a subterranean well |
| 08/09/2006 | EP1687506A1 A disconnect device |
| 08/09/2006 | EP0975992B1 Pressure impulse telemetry apparatus and method |
| 08/09/2006 | CN2804378Y Oil discharger of oil well pump |
| 08/09/2006 | CN2804377Y Cup sliding-sleeve liquid-proof check valve |
| 08/09/2006 | CN2804376Y Wellhead valve |
| 08/08/2006 | US7086471 Method and apparatus for controlling downhole flow |
| 08/08/2006 | US7086464 Well testing system |
| 08/08/2006 | US7086417 Gas flow control device |
| 08/03/2006 | WO2006081015A1 Dual flapper safety valve |
| 08/03/2006 | US20060169464 Positioning tool with valved fluid diversion path |
| 08/03/2006 | US20060169463 Downhole tool with actuable barrier |
| 08/03/2006 | US20060169462 Interventionless oil tool actuator with floating piston |
| 08/02/2006 | EP1585885A4 Actuator for well-head valve or other similar applications and system incorporating same |
| 08/02/2006 | EP1360418B1 Gas lift valve with central body ventury for controlling the flow of injection gas in oil wells producing by continuous gas lift |
| 08/02/2006 | CN2802075Y Anti-blowout rush installing emergency stop cock in drilling column |
| 08/02/2006 | CN2802070Y Flow regulator |
| 08/01/2006 | USRE39209 Production fluid control device and method for oil and/or gas wells |
| 08/01/2006 | US7082996 Method and apparatus to complete a well having tubing inserted through a valve |
| 08/01/2006 | CA2346282C Hydraulic switch device |
| 08/01/2006 | CA2335198C Variable orifice gas lift valve for high flow rates with detachable power source and method of using |
| 08/01/2006 | CA2294010C Casing annulus remediation system |
| 08/01/2006 | CA2293391C Water well recharge throttle valve |
| 08/01/2006 | CA2224258C Surface controlled formation isolation valve adapted for deployment of a desired length of a tool string in a wellbore |
| 07/27/2006 | WO2006059223A3 Electro-hydraulic process control system and method |
| 07/27/2006 | US20060164256 Downhole data communication |
| 07/27/2006 | US20060163507 Drive device |
| 07/27/2006 | US20060162939 Dual flapper safety valve |
| 07/27/2006 | US20060162935 Snorkel Device for Flow Control |
| 07/27/2006 | US20060162933 System and method of installing and maintaining an offshore exploration and production system having an adjustable buoyancy chamber |
| 07/27/2006 | US20060162932 Safety Valve for Use in an Injection Well |
| 07/25/2006 | CA2403293C Apparatus to actuate downhole tool |
| 07/25/2006 | CA2286014C Pressure impulse telemetry apparatus and method |
| 07/20/2006 | WO2006075173A1 Valve |
| 07/20/2006 | US20060157257 Fluid flow control device and method for use of same |
| 07/20/2006 | US20060157255 Downhole safety valve |
| 07/20/2006 | US20060157254 Hydraulic control system |
| 07/20/2006 | US20060157240 Methods and apparatus for monitoring components of downhole tools |
| 07/20/2006 | CA2594723A1 Valve |
| 07/19/2006 | CN2797616Y Combination type well head device with electric pump flow-rate regulating function |
| 07/19/2006 | CN1806088A Lightweight and compact subsea intervention package and method |
| 07/19/2006 | CN1804121A Method for spray-welding valve plate valve seat sealing surface of viscous oil thermal production well mouth by utilizing nickel-based alloy |
| 07/18/2006 | US7077213 Expansion cone for radially expanding tubular members |
| 07/18/2006 | US7077208 Method and system for directing fluid flow |
| 07/18/2006 | CA2371420C Apparatus and method for controlling fluid flow in a wellbore |
| 07/18/2006 | CA2365310C Wellbore primary barrier and related systems |
| 07/13/2006 | WO2006074339A1 Equalizing flapper for high slam rate applications |
| 07/13/2006 | WO2004089608A3 Apparatus for radially expanding and plastically deforming a tubular member |
| 07/13/2006 | US20060151177 Equalizing flapper for high slam rate applications |
| 07/13/2006 | US20060151174 Flow control device |
| 07/13/2006 | DE102005058058A1 Hydrauliksteuersystem The hydraulic control system |
| 07/12/2006 | EP1283940B1 Hydraulically operated fluid metering apparatus for use in a subterranean well |
| 07/11/2006 | US7075454 Power generation using batteries with reconfigurable discharge |
| 07/11/2006 | US7073594 Wireless downhole well interval inflow and injection control |
| 07/11/2006 | US7073591 Casing hanger annulus monitoring system |