| Patents for E21B 34 - Valve arrangements for boreholes or wells (14,685) |
|---|
| 05/25/2010 | US7721800 Flow control mechanism for a downhole tool |
| 05/25/2010 | CA2594333C Equalizing flapper for high slam rate applications |
| 05/25/2010 | CA2501839C Hydraulic stepping valve actuated sliding sleeve |
| 05/20/2010 | WO2010056783A2 Tubing pressure insensitive control system |
| 05/20/2010 | WO2010039042A3 Down hole valve device |
| 05/20/2010 | US20100122817 Apparatus and method for servicing a wellbore |
| 05/19/2010 | EP2185790A2 Multi-position valve for fracturing and sand control and associated completion methods |
| 05/19/2010 | EP2185789A2 Method and apparatus for multi-positioning a sleeve |
| 05/19/2010 | CN201474669U Plugging tubing string of non-productive well |
| 05/19/2010 | CN201474668U Gas lift valve |
| 05/19/2010 | CN201474667U Two-way constant pressure valve |
| 05/19/2010 | CN201474666U Underground ball throwing control switch valve |
| 05/19/2010 | CN201474665U Kelly plug valve |
| 05/19/2010 | CN201474664U Pressure-adjustable gas safety recovery unit |
| 05/19/2010 | CN201474663U Ball seat open type bypass valve pocket |
| 05/19/2010 | CN201474653U Oil well double ball-joint deflection regulating automatic blowout preventer |
| 05/19/2010 | CN201474649U Full-aperture blowout preventer in drilling tool |
| 05/19/2010 | CN101709630A Integrated control module for safe shutdown system of wellhead |
| 05/19/2010 | CA2685827A1 A downhole modulator apparatus |
| 05/18/2010 | US7717185 Lock open and control system access apparatus for a downhole safety valve |
| 05/18/2010 | CA2530969C Water shut off method and apparatus |
| 05/14/2010 | WO2010052490A1 Disposal of well control fluids |
| 05/13/2010 | US20100116506 Subsea deployment of submersible pump |
| 05/13/2010 | US20100116503 Dual check valve |
| 05/13/2010 | US20100116502 Tubing Pressure Insensitive Control System |
| 05/13/2010 | US20100116501 Backup safety flow control system for concentric drill string |
| 05/13/2010 | US20100116488 Tubing hanger with integral annulus shutoff valve |
| 05/12/2010 | EP2183463A2 Subsurface safety valve for electric subsea tree |
| 05/12/2010 | CN201460866U Unidirectional flow detecting device |
| 05/12/2010 | CN201460855U Eccentric gas lift valve working tube |
| 05/12/2010 | CN201460833U Selective oil production string |
| 05/12/2010 | CN201460812U Arrow-shaped check valve |
| 05/12/2010 | CN201460811U Non-return valve for ball injection |
| 05/12/2010 | CN201460810U Casing and fishing type gas-lift check valve |
| 05/12/2010 | CN201460809U Check valve of petroleum drilling tool |
| 05/12/2010 | CN201460808U Novel striking oil draining apparatus |
| 05/12/2010 | CN201460807U Sided oil drain device |
| 05/12/2010 | CN201460800U Reclaimed oil pipe blocking valve |
| 05/12/2010 | CN101705805A Well-head shutoff pressure prevention and casting head gas recovery integrated device |
| 05/12/2010 | CN101705803A Well-flushing oil-drainage device of oil pumping pipe column |
| 05/11/2010 | US7712540 Flow control device |
| 05/11/2010 | US7712538 Method and apparatus for multi-positioning a sleeve |
| 05/11/2010 | US7712537 Method and apparatus for continuously injecting fluid in a wellbore while maintaining safety valve operation |
| 05/06/2010 | WO2010051402A2 Linear actuation system in the form of a ring |
| 05/06/2010 | WO2010051170A1 Subsurface safety valve for chemical injection |
| 05/06/2010 | US20100108332 Valve Assembly |
| 05/06/2010 | US20100108326 Gas lift valve assembly |
| 05/06/2010 | US20100108325 Method and device for securing a well |
| 05/06/2010 | US20100108324 Linear Actuation System in the Form of a Ring |
| 05/06/2010 | US20100108323 Reliable Sleeve Activation for Multi-Zone Frac Operations Using Continuous Rod and Shifting Tools |
| 05/06/2010 | US20100108320 Subsurface safety valve for chemical injection |
| 05/05/2010 | EP2182167A2 Memory Logging System for Determining the Condition of a Sliding Sleeve |
| 05/05/2010 | EP2181246A1 Bearing assembly system with integral lubricant distribution and well drilling equipment comprising same |
| 05/05/2010 | CN201448089U Seabed valve |
| 05/05/2010 | CN101701514A Wax scraper for inner wall of oil pipe |
| 05/04/2010 | US7708075 System and method for injecting a chemical downhole of a tubing retrievable capillary bypass safety valve |
| 05/04/2010 | US7708074 Downhole valve for preventing zonal cross-flow |
| 05/04/2010 | US7708066 Full bore valve for downhole use |
| 05/04/2010 | US7708060 One trip cemented expandable monobore liner system and method |
| 04/30/2010 | CA2681694A1 Valve rod guide |
| 04/30/2010 | CA2674223A1 Reliable sleeve activation for multi-zone frac operations using continuous rod and shifting tools |
| 04/29/2010 | WO2010045691A1 Flow diverter assembly |
| 04/29/2010 | WO2010014398A3 Electric wireline insert safety valve |
| 04/29/2010 | US20100101800 Subsea Completion with a Wellhead Annulus Access Adapter |
| 04/28/2010 | EP2179131A1 Viscous oil inflow control devices for equalizing screen flow |
| 04/28/2010 | CN201443504U Supporting-type under-pump oil draining device |
| 04/28/2010 | CN201443395U sampling valve |
| 04/28/2010 | CN201443364U Casing leakage-finding decompression tool |
| 04/28/2010 | CN201443361U Hot washable single-well admixture adjusting device |
| 04/28/2010 | CN201443357U Plug-in sand-prevention oil well bottom switching device |
| 04/28/2010 | CN201443356U Ground automatic high pressure regulation relief valve device |
| 04/28/2010 | CN201443354U Easy-to-drill core breaker of float collar float shoes |
| 04/28/2010 | CN201443331U Multi-functional well head and christmas tree |
| 04/28/2010 | CN201443322U Flashboard type adjustable choke nipple fixing device |
| 04/28/2010 | CN201443300U Overflowing and anti-falling integrated screwdrill |
| 04/28/2010 | CN101699029A High-pressure clamped sealing gas injection tool being used for leak detection of tube column and having function of trip prevention |
| 04/28/2010 | CA2642188A1 Downhole well pump |
| 04/27/2010 | US7703541 Rotary actuator mechanism for a downhole tool |
| 04/27/2010 | US7703538 Access apparatus from a tubular into a downhole hydraulic control circuit and associated method |
| 04/27/2010 | US7703533 Shear type circulation valve and swivel with open port reciprocating feature |
| 04/27/2010 | US7703532 Tubing retrievable injection valve |
| 04/27/2010 | CA2535080C Snorkel device for flow control |
| 04/27/2010 | CA2401744C Use of downhole high pressure gas in a gas-lift well |
| 04/22/2010 | WO2009009412A3 Producing resources using heated fluid injection |
| 04/22/2010 | US20100096145 Downhole safety valve apparatus and method |
| 04/22/2010 | US20100096142 Gas-Lift Valve and Method of Use |
| 04/22/2010 | US20100096140 Gas Restrictor For Pump |
| 04/22/2010 | US20100096134 Well Systems and Associated Methods Incorporating Fluid Loss Control |
| 04/22/2010 | US20100096127 Flow regulator assembly |
| 04/21/2010 | CN201439703U Bypass sliding sleeve |
| 04/21/2010 | CN201439702U Balance valve |
| 04/20/2010 | US7699108 Distortion compensation for rod piston bore in subsurface safety valves |
| 04/20/2010 | CA2471067C Methods and apparatus for actuating a downhole tool |
| 04/15/2010 | WO2010042418A1 Valve device and associated methods of selectively communicating between an interior and an exterior of a tubular string |
| 04/15/2010 | WO2010040544A1 Wellhead valve system for adjusting the flow with integrated multiphase flow rate measuring ability |
| 04/15/2010 | WO2009134544A4 Downhole barrier valve |
| 04/15/2010 | US20100090639 Control System of an Actuator for the Actuation of Submarine Devices |
| 04/15/2010 | US20100089588 System, method and apparatus for concentric tubing deployed, artificial lift allowing gas venting from below packers |
| 04/15/2010 | US20100089587 Fluid logic tool for a subterranean well |
| 04/15/2010 | US20100089570 Method for signalling a downhole device in a well |