| Patents for F04B 47 - Pumps or pumping installations specially adapted for raising fluids from great depths, e.g. well pumps (5,485) |
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| 01/17/2007 | CN1896516A Efficient reversed beam-pumping unit |
| 01/16/2007 | CA2225053C Valve for use in a fluid pump |
| 01/10/2007 | CN2856491Y Liquid pumping unit |
| 01/10/2007 | CN2856488Y Novel lever pump set |
| 01/10/2007 | CN2856485Y Brake of beam pumping unit |
| 01/10/2007 | CN2856484Y Braking and antitheft toe axis of pumping unit |
| 01/10/2007 | CN2856483Y Load reducer of oil pump |
| 01/10/2007 | CN1892031A Hydraulic self-sealed plunger oil-well pump |
| 01/03/2007 | CN2854136Y Intelligent benefit-increasing controller of beam-pumping unit |
| 01/03/2007 | CN2854134Y Short plunger low friction resistance sand-proof thickened oil pump |
| 01/03/2007 | CN2854133Y Two-way oil-well pump |
| 01/03/2007 | CN1888429A Oil pumping unit base position regulator |
| 01/03/2007 | CN1888427A Rod type whole ceramic settling oil-well pump |
| 01/02/2007 | CA2531202C Pumping water from a natural gas well |
| 12/27/2006 | CN2851651Y Multifunctional oil feeding device for common tubing pump used in pumping well |
| 12/27/2006 | CN2851649Y Pilot-controlled external working barrel of hydraulic piston pump in integral sliding bush |
| 12/27/2006 | CN2851645Y DC-driven tri-vane downhole oil well pump |
| 12/27/2006 | CN2851644Y Bottom-supported oil well pump |
| 12/27/2006 | CN2851643Y Sand-settling disposable plunger pump |
| 12/27/2006 | CN2851642Y High-efficiency oil well pump |
| 12/27/2006 | CN2851641Y Boosting jet pump for oil well |
| 12/20/2006 | CN2849231Y Oil lubricating anti offset wear roofbolt |
| 12/20/2006 | CN2849229Y Eccentrically arranged valve type oil pumping pump |
| 12/20/2006 | CN2849227Y Large flow passage oil pumping pump |
| 12/20/2006 | CN2849226Y Standard module combined three capsule chamber oil submersible electric pump protector |
| 12/20/2006 | CN2849225Y Module type bottom sealing seat for oil submersible electric pump protector |
| 12/20/2006 | CN2849224Y Module type settling guide shaft pipe support for oil submersible electric pump protector |
| 12/20/2006 | CN2849222Y Direct driving intelligent screw pump driving device |
| 12/20/2006 | CN2849221Y Compound permanent magnet electric oil pumping machine |
| 12/20/2006 | CN2849154Y Well head collision pump device of oil pumping machine |
| 12/20/2006 | CN1880765A Standing valve cover and magnetic oil-drainage type oil well pump equipped therewith |
| 12/19/2006 | CA2490846C Eccentric wellhead hyrdraulic drive unit |
| 12/14/2006 | WO2006132541A1 Subsea compression system |
| 12/13/2006 | CN2846805Y Oil pump capable of preventing particle from depositing |
| 12/13/2006 | CN2846799Y High efficiency energy saving thick oil pump with rod |
| 12/13/2006 | CN2846798Y Series labyrinth seal oil pump for butterfly valve forced opening and closing plunger |
| 12/13/2006 | CN2846747Y Power leading-in device for screw pump idle rod cable heating process |
| 12/13/2006 | CN1877077A Hydraulic piston type oil pumping system |
| 12/12/2006 | CA2417367C Below motor well fluid separation and conditioning |
| 12/08/2006 | CA2550150A1 Sucker rod guide installer |
| 12/07/2006 | US20060276999 Control system for centrifugal pumps |
| 12/07/2006 | US20060275161 Reciprocating Pump With Screw Actuator |
| 12/06/2006 | CN2844499Y Multiple ver oil-extracting pump |
| 12/06/2006 | CN2844497Y Electric oil-submersible oil pump with double screw rods |
| 12/06/2006 | CN2844496Y Electric power saving beam pumping unit |
| 12/06/2006 | CN2844495Y Long-distance beam-pumping unit of switching reduction box |
| 12/05/2006 | US7144232 Water well pump |
| 11/30/2006 | WO2006126886A1 A device for selective movement of well tools and also a method of using same |
| 11/30/2006 | CA2604355A1 A device for selective movement of well tools and also a method of using same |
| 11/29/2006 | CN2842010Y Self-locking drop-proof oil-well pump |
| 11/29/2006 | CN2842008Y Oil extracting screw pump high-speed ground driving head |
| 11/29/2006 | CN1869447A Combined plunger oil-well pump |
| 11/29/2006 | CN1869397A Oil-submersible magnetic suspension two-way plunger electric pump oil production method |
| 11/22/2006 | CN2839645Y Oil well increasing production power-saving counter current control valve |
| 11/22/2006 | CN2839642Y Shake out oil well electric pump protector |
| 11/22/2006 | CN1865704A Electric submersible leading-screw plunger oil well pump |
| 11/22/2006 | CN1865703A Pumping system of leading-screw plunger pump |
| 11/21/2006 | CA2280560C Tapered flow gas separation system |
| 11/15/2006 | CN2837556Y Flexible metal oil-well pump |
| 11/15/2006 | CN2837555Y Surface driving device for screw pump |
| 11/15/2006 | CN2837506Y Pipe string for stratified oil production in electric pump well |
| 11/14/2006 | US7134503 Wellbore pump |
| 11/09/2006 | US20060251525 Rod pump control system including parameter estimator |
| 11/08/2006 | CN2835648Y Rupture prevention oil-well pump |
| 11/01/2006 | CN2833176Y 杆式抽稠油泵 Rod pumping heavy oil |
| 11/01/2006 | CN2833175Y Sand control device for oil well pump |
| 11/01/2006 | CN2833174Y Auxiliary tool for sand control pump for oil production in oilfield |
| 11/01/2006 | CN2833173Y Reverse flow preventing nozzle for submersible pump well |
| 11/01/2006 | CN2833172Y Energy-saving submersible electric pump oil production apparatus employing linear motor to drive dual-acting pump |
| 11/01/2006 | CN2833171Y Feedback type sand-proof thick oil pump |
| 11/01/2006 | CN2833170Y Ball valve type whole drum bridged anti-gas pump |
| 10/25/2006 | EP1714032A1 Hydraulic motor arrangement and method of operating a hydraulic motor |
| 10/25/2006 | EP1714031A1 Hydraulic ram pump |
| 10/25/2006 | CN2830708Y High efficiencyenvironment protection oil-well pump |
| 10/25/2006 | CN1851267A Rod type ceramic oil-pump |
| 10/24/2006 | CA2398802C Pad plunger assembly with one-piece locking end members |
| 10/19/2006 | US20060233650 Pumping unit driven by a linear electric motor |
| 10/19/2006 | DE102005016884A1 Pumpensystem Pump system |
| 10/18/2006 | CN2828381Y Forced on-and-off valve oil-well pump |
| 10/18/2006 | CN1847608A Spring type Y-shaped well joint |
| 10/17/2006 | US7121335 Plunger for gas wells |
| 10/17/2006 | CA2521013C Plunger lift piston |
| 10/11/2006 | CN2826005Y Brake locking device for oil pumping unit |
| 10/11/2006 | CN1844669A Down-hole linear motor and hydraulic cylinder driven capsule pump |
| 10/11/2006 | CN1844668A Down-hole corrugated pipe sealed and linear motor driven oil-well pump |
| 10/11/2006 | CN1844667A Down-hole linear motor and hydraulic cylinder driven capsule pump with balance weight for oil well |
| 10/11/2006 | CN1844666A Corrugated pipe sealed oil-well pump |
| 10/11/2006 | CA2542529A1 Improved hydraulic pump jack system for reciprocating oil well sucker rods |
| 10/10/2006 | CA2452473C System and method for the production of oil from low volume wells |
| 10/10/2006 | CA2435601C Valve cage insert |
| 10/04/2006 | CN2823600Y Pipe type pump precipitation valve |
| 10/04/2006 | CN2823599Y Lower hanging rod-type oil pump |
| 10/04/2006 | CN2823598Y Balance type linear motor oil pumping device for downhole |
| 10/04/2006 | CN2823597Y Linear motor double pumping oil pumping device for downhole |
| 10/04/2006 | CN2823596Y Reducing ring type sealed oil pump |
| 10/04/2006 | CN2823530Y Locking ball type coupling |
| 10/04/2006 | CN1840904A Ultra-low speed big torsional moment special-shape motor dragging and tower type high-efficiency low-consumption intelligent pumping unit |
| 10/04/2006 | CN1277999C Method for hydraulic subsea dredging |
| 10/03/2006 | US7117120 Control system for centrifugal pumps |
| 10/03/2006 | CA2339427C Gear unit for a deep-borehole pump |