| Patents for E21B 34 - Valve arrangements for boreholes or wells (14,685) |
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| 07/11/2006 | US7073583 Method and apparatus for expanding tubing downhole |
| 07/11/2006 | CA2405775C Downhole flow meter |
| 07/11/2006 | CA2355509C Downhole isolation valve |
| 07/11/2006 | CA2252728C Method and apparatus for remote control of multilateral wells |
| 07/05/2006 | EP1676975A2 Subsea riser disconnect and method |
| 07/05/2006 | EP1676066A2 Internal blow out preventer ball and seat |
| 07/05/2006 | EP1368552B1 Downhole tool |
| 07/05/2006 | CN2793326Y Safety sampling valve |
| 07/05/2006 | CN2793325Y 油井冬季取样器 Well Winter Sampler |
| 07/05/2006 | CN2793314Y Impacting oil discharging device |
| 07/04/2006 | US7069997 Valve cage insert |
| 07/04/2006 | US7069991 Method and apparatus for surge pressure reduction in a tool with fluid motivator |
| 07/04/2006 | US7069988 Flow completion system |
| 06/29/2006 | WO2006069247A2 Method and apparatus for fluid bypass of a well tool |
| 06/29/2006 | WO2006068873A1 Modular actuator for subsea valves and equipment, and methods of using same |
| 06/28/2006 | EP1179116B9 Recovery of production fluids from an oil or gas well |
| 06/28/2006 | CN2791241Y Hydraulic self-opening drill-stem leakage valve |
| 06/28/2006 | CN2791240Y Square drill-pipe mud pump |
| 06/28/2006 | CN1261668C Live pipeline valve replacer |
| 06/27/2006 | US7066264 Method and apparatus for treating a subterranean formation |
| 06/27/2006 | US7066252 Erosion resistant, self and/or artificial external cleaning solid exclusion system |
| 06/27/2006 | CA2310043C Method and apparatus for increasing fluid recovery from a subterranean formation |
| 06/22/2006 | WO2006064215A1 Axially energisable ball valve |
| 06/22/2006 | US20060131033 Flow control apparatus for use in a wellbore |
| 06/22/2006 | US20060131030 Remotely Actuating a Valve |
| 06/22/2006 | US20060131014 Borehole communication and measurement system |
| 06/22/2006 | DE102005060007A1 Vorrichtung und Verfahren zur Verwendung in einem Bohrloch Apparatus and method for use in a wellbore |
| 06/22/2006 | CA2591039A1 Axially energisable ball valve |
| 06/21/2006 | EP1672167A1 Flow control apparatus for use in a wellbore |
| 06/21/2006 | EP1309770B1 Flow control device |
| 06/21/2006 | EP1278935B1 Tubing head seal assembly |
| 06/21/2006 | EP1272727B1 Apparatus to actuate downhole tool |
| 06/21/2006 | CN2789411Y Gap type antitheft sampling valve |
| 06/21/2006 | CN2789408Y Automatic decompression type valve swab |
| 06/20/2006 | US7063162 Method for controlling fluid flow into an oil and/or gas production well |
| 06/20/2006 | US7063157 Apparatus and method for installation of subsea well completion systems |
| 06/20/2006 | US7063156 Tubing fill and testing valve |
| 06/20/2006 | US7063152 Model HCCV hydrostatic closed circulation valve |
| 06/20/2006 | US7063143 Docking station assembly and methods for use in a wellbore |
| 06/15/2006 | WO2006061645A1 Plug installation and retrieval tool for subsea wells |
| 06/15/2006 | WO2006043999A3 Cast flapper with hot isostatic pressing treatment |
| 06/15/2006 | US20060124320 Non-elastomer cement through tubing retrievable safety valve |
| 06/15/2006 | US20060124317 Multi-cycle downhole tool with hydraulic damping |
| 06/15/2006 | US20060124315 Method and apparatus for stimulating hydrocarbon wells |
| 06/15/2006 | US20060124312 Technique and apparatus for completing multiple zones |
| 06/15/2006 | US20060124310 System for Completing Multiple Well Intervals |
| 06/15/2006 | US20060124300 Method for the circulation of gas when drilling or working a well |
| 06/15/2006 | US20060124296 Hyraulically releasable inflation tool for permanent bridge plug |
| 06/14/2006 | EP1669541A1 Locating joins in coiled tubing operations |
| 06/14/2006 | EP1669540A1 Device for controlling fluid communication in a wellbore |
| 06/14/2006 | EP1668223A2 Hydraulically actuated control system for use in a subterranean well |
| 06/14/2006 | CN2787824Y Support type oil release device |
| 06/14/2006 | CA2628778A1 Technique and apparatus for completing multiple zones |
| 06/13/2006 | US7059418 Pressurized seal arrangement |
| 06/13/2006 | US7059401 Flow control apparatus for use in a wellbore |
| 06/08/2006 | WO2006060377A1 Safety valve with extension springs |
| 06/08/2006 | WO2006059064A1 Diverter tool |
| 06/08/2006 | WO2005079403A3 System for controlling a hydraulic actuator, and methods of using same |
| 06/08/2006 | US20060118308 Dual bore well jumper |
| 06/08/2006 | US20060118307 Safety valve with extension springs |
| 06/08/2006 | US20060118306 Wellbore annulus flushing valve |
| 06/07/2006 | EP1666697A1 Fluid operated pump for use in a wellbore |
| 06/07/2006 | EP1666696A2 Apparatus and method for return of drilling fluid from a sealed marine riser to a floating drilling rig while drilling |
| 06/07/2006 | EP1093540A4 Method and multi-purpose apparatus for control of fluid in wellbore casing |
| 06/07/2006 | CN2786275Y Anti-theft four-way test valve with cipher for water injection well |
| 06/06/2006 | US7055611 Plug-dropping container for releasing a plug into a wellbore |
| 06/06/2006 | US7055610 Plug concealment and diversion tool |
| 06/06/2006 | US7055607 Seal assembly for a safety valve |
| 06/06/2006 | US7055605 Downhole circulation valve operated by dropping balls |
| 06/06/2006 | US7055592 Toroidal choke inductor for wireless communication and control |
| 06/06/2006 | CA2423547C Flow control apparatus for use in a wellbore |
| 06/06/2006 | CA2344744C Rotating blowout preventer with independent cooling circuits and thrust bearing |
| 06/01/2006 | WO2006057996A2 Dual bore well jumper |
| 06/01/2006 | WO2006057995A2 Well production and multi-purpose intervention access hub |
| 06/01/2006 | US20060113115 Ball operated by-pass tool for use in drillstring |
| 06/01/2006 | US20060113089 Downhole inflow control device with shut-off feature |
| 06/01/2006 | US20060113081 Communication tool for accessing a non annular hydraulic chamber of a subsurface safety valve |
| 05/31/2006 | EP1660753A1 Method and apparatus for adding a tubular to drill string with diverter |
| 05/31/2006 | EP1549822A4 Remote intervention logic valving method and apparatus |
| 05/31/2006 | CN2784583Y Slag prevention device for oil release |
| 05/31/2006 | CN2784582Y Novel valve core of slurry valve |
| 05/31/2006 | CN2784575Y Dual-action valve for well cleanup and oil release |
| 05/30/2006 | US7051813 Pass through valve and stab tool |
| 05/30/2006 | US7051812 Fracturing tool having tubing isolation system and method |
| 05/25/2006 | US20060108152 Dart-operated big bore by-pass valve |
| 05/25/2006 | US20060108120 Well production and multi-purpose intervention access hub |
| 05/25/2006 | US20060108118 Apparatus and method for installation of subsea well completion systems |
| 05/24/2006 | EP1274992B1 Apparatus and method for downhole well equipment and process management, identification, and actuation |
| 05/24/2006 | EP1259702B1 Power generation using batteries with reconfigurable discharge |
| 05/24/2006 | EP1259701B1 Controlled downhole chemical injection |
| 05/24/2006 | CN2783017Y Theft-proof keeper joint for christmas tree of oil and water well |
| 05/24/2006 | CN2782924Y High pressure resisting gas lift valve |
| 05/24/2006 | CN2782923Y 可控止回阀 Controllable valve |
| 05/24/2006 | CN2782922Y Sand settling blocking-proof counter flooding valve |
| 05/24/2006 | CN2782921Y Light throttling pipe assembly for general overhaul of oil, water well and side drilling |
| 05/24/2006 | CN2782920Y Light well-killing pipe assembly for general overhaul of oil, water well and side drilling |
| 05/24/2006 | CN2782910Y Pipe column without pressing oil reservoir for well cleanout |
| 05/23/2006 | US7048061 Screen assembly with flow through connectors |
| 05/23/2006 | US7048057 Protection scheme and method for deployment of artificial lift devices in a wellbore |
| 05/23/2006 | CA2402221C In-well monitoring and flow control system |