| Patents for E21B 34 - Valve arrangements for boreholes or wells (14,685) |
|---|
| 07/26/2011 | US7984761 Openhole perforating |
| 07/26/2011 | CA2435580C Gas lift valve with central body venturi for controlling the flow of injection gas in oil wells producing by continuous gas lift |
| 07/21/2011 | WO2011088145A1 Drill string flow control valve and methods of use |
| 07/21/2011 | WO2011087607A1 Pressure controlled tester and collet therefor |
| 07/21/2011 | WO2011049970A3 Pressure equalizing a ball valve through an upper seal bypass |
| 07/21/2011 | WO2011043931A3 Downhole valve |
| 07/21/2011 | WO2011041674A3 Flow control device that substantially decreases flow of a fluid when a property of the fluid is in a selected range |
| 07/21/2011 | US20110174505 Ball drop module |
| 07/21/2011 | US20110174499 Flow regulator for downhole progressing cavity motor |
| 07/21/2011 | US20110174494 Cable protector |
| 07/21/2011 | US20110174493 Multi-acting Anti-swabbing Fluid Loss Control Valve |
| 07/21/2011 | DE102010010181B3 Vorrichtung und Verfahren zum Erzeugen von Hochdruck-Impulsen Apparatus and method for generating high-pressure pulses |
| 07/21/2011 | CA2787003A1 Drill string flow control valve and methods of use |
| 07/20/2011 | CN201902656U Hydraulic driving device of flat plate gate valve under seawater |
| 07/20/2011 | CN201902196U Safety check valve while drilling |
| 07/20/2011 | CN201902195U Underground intelligent switch |
| 07/20/2011 | CN201902194U Gas well choke manifold |
| 07/20/2011 | CN201902192U Float valve type underground blowout preventer |
| 07/20/2011 | CN102128014A Electric bailing well opening anti-theft cap |
| 07/19/2011 | US7980316 Formation isolation valve |
| 07/19/2011 | US7980315 System and method for selectively communicatable hydraulic nipples |
| 07/19/2011 | US7980313 Method and apparatus for catching a pump-down plug or ball |
| 07/14/2011 | WO2011084072A1 Internal blow out preventer |
| 07/14/2011 | WO2011056292A3 Actuation system for well tools |
| 07/14/2011 | WO2011038107A3 Method and apparatus for injecting fluid in a wellbore |
| 07/14/2011 | WO2011028562A4 Isolation valve for subterranean use |
| 07/14/2011 | US20110168410 Drill string flow control valve and methods of use |
| 07/14/2011 | US20110168403 Wirelessly actuated hydrostatic set module |
| 07/14/2011 | US20110168398 Injection, Sealing Valving and Passageway System |
| 07/14/2011 | CA2786082A1 Internal blow out preventer |
| 07/12/2011 | US7975767 Apparatus for controlling a downhole device |
| 07/12/2011 | CA2637519C Hydraulically openable ported sub |
| 07/07/2011 | WO2011082097A2 Gas lift barrier valve |
| 07/07/2011 | WO2011081812A1 A method of determining queried fluid cuts along a tubular |
| 07/07/2011 | WO2011081807A1 Hydrostatic flapper stimulation valve and method |
| 07/07/2011 | WO2011080498A1 Process and apparatus to improve reliability of pinpoint stimulation operations |
| 07/07/2011 | WO2011044074A3 Active integrated completion installation system and method |
| 07/07/2011 | WO2011041525A3 Method and system for running subsea test tree and control system without conventional umbilical |
| 07/07/2011 | US20110162851 Tool for shutting off openings or leaks in a well bore |
| 07/07/2011 | CA2785893A1 Hydrostatic flapper stimulation valve and method |
| 07/06/2011 | CN201891412U Sampling valve for oil well |
| 07/06/2011 | CN201891405U Gas lift valve debugging device |
| 07/06/2011 | CN102116142A Water injection flow controller |
| 07/05/2011 | US7971652 Linear actuation system in the form of a ring |
| 07/05/2011 | US7971651 Shape memory alloy actuation |
| 07/05/2011 | US7971637 Dual mini well surface control system |
| 07/05/2011 | CA2443583C Controlled pressure drop filter |
| 06/30/2011 | WO2011046682A3 Ball catcher with retention capability |
| 06/30/2011 | WO2011043872A3 Multi-point chemical injection system for intelligent completion |
| 06/30/2011 | US20110155396 System, method, and device for actuating a downhole tool |
| 06/30/2011 | US20110155393 Generating power in a well |
| 06/30/2011 | US20110155392 Hydrostatic Flapper Stimulation Valve and Method |
| 06/30/2011 | US20110155391 Gas lift barrier valve |
| 06/30/2011 | US20110155387 Apparatus for improving well safety and recovery and installation process thereof |
| 06/30/2011 | US20110155381 Surface controlled subsurface safety valve assembly with primary and secondary valves |
| 06/30/2011 | US20110155380 Hydrostatic flapper stimulation valve and method |
| 06/30/2011 | US20110155379 Rotating continuous flow sub |
| 06/29/2011 | CN201884049U Gas drainage and outburst prevention system for high-pressure water jet cutting and drilling interlocking coal seams with ultra-long drilled holes |
| 06/29/2011 | CN201884003U Large-diameter shearing suspended tubing drain |
| 06/29/2011 | CN201884002U Drilling downhole check valve |
| 06/29/2011 | CN201884001U Automatic pressure-relief oil nozzle for flowing well |
| 06/29/2011 | CN201883982U Permanent magnet anti-theft annular wellhead combined device |
| 06/28/2011 | US7968184 Erosion resistant surface and method of making erosion resistant surfaces |
| 06/28/2011 | US7967076 Flow-actuated actuator and method |
| 06/28/2011 | US7967071 Electronic completion installation valve |
| 06/28/2011 | CA2497458C Dart-operated big bore by-pass valve |
| 06/23/2011 | WO2011072367A1 Downhole sub with hydraulically actuable sleeve valve |
| 06/23/2011 | WO2011030095A3 Valves, bottom hole assemblies, and methods of selectively actuating a motor |
| 06/23/2011 | WO2011008639A4 Subterranean valve operated by string relative movement |
| 06/23/2011 | US20110147007 Downhole-Adjustable Flow Control Device for Controlling Flow of a Fluid Into a Wellbore |
| 06/23/2011 | US20110147006 Downhole-Adjustable Flow Control Device for Controlling Flow of a Fluid Into a Wellbore |
| 06/23/2011 | US20110147000 Downhole Safety Valve Apparatus and Method |
| 06/23/2011 | CA2776560A1 Downhole sub with hydraulically actuable sleeve valve |
| 06/22/2011 | EP2334896A2 Downhole ball mechanism with enhanced drift clearance |
| 06/22/2011 | CN201874529U Control system for well-mouth fuel-gas heating furnace |
| 06/22/2011 | CN201874527U Wellhead ground safety control system |
| 06/22/2011 | CN201874526U Integral rotating transposition sleeve for pressure-controlled circulating valve |
| 06/22/2011 | CN201874525U Magnetic-suction pressure testing valve |
| 06/22/2011 | CN201874524U Wellhead check valve for water injection well |
| 06/22/2011 | CN201874523U Conveniently disassembled type wellhead check valve for water injection well |
| 06/22/2011 | CN201874522U Valve anti-theft device |
| 06/22/2011 | CN201874521U Anti-theft box for sampling gate |
| 06/22/2011 | CN201874520U Cage type throttling valve |
| 06/22/2011 | CN201874519U Multifunctional water distributor at well mouth |
| 06/22/2011 | CN201874509U Novel check-valve type sleeve-pipe well-plugging device |
| 06/22/2011 | CN201874490U Multifunctional manifold for downhole minor repair operation |
| 06/22/2011 | CN102102500A Motor driven worm gear transmission underground sleeve valve |
| 06/21/2011 | US7963342 Downhole isolation valve and methods for use |
| 06/21/2011 | US7963339 Bearing mounted ball valve and method of use |
| 06/21/2011 | US7963334 Method and apparatus for continuously injecting fluid in a wellbore while maintaining safety valve operation |
| 06/21/2011 | CA2580629C Downhole safety valve apparatus and method |
| 06/16/2011 | WO2011072145A2 Dual path subsea control system |
| 06/16/2011 | WO2011072121A2 Wireline run mechanically or hydraulically operated subterranean insert barrier valve and associated landing nipple |
| 06/16/2011 | WO2011072047A2 Wireline run mechanically or hydraulically operated subterranean insert barrier valve and associated landing nipple |
| 06/16/2011 | WO2011071906A2 Multi-component disappearing tripping ball and method for making the same |
| 06/16/2011 | WO2011071670A2 Multi-position tool actuation system |
| 06/16/2011 | WO2011034694A3 Fracturing and gravel packing tool with shifting ability between squeeze and circulate while supporting an inner string assembly in a single position |
| 06/16/2011 | WO2011031638A3 System and method for controlling actuation of downhole tools |
| 06/16/2011 | WO2011031632A3 Tubular seat and tubular actuating system |
| 06/16/2011 | WO2011028560A3 Fracturing and gravel packing tool with multi-position lockable sliding sleeve |