| 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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| 05/22/2007 | CA2457596C Tension thrust espcp system |
| 05/22/2007 | CA2248849C Dry-pit submersible pump and liquid transfer method |
| 05/22/2007 | CA2225894C Improved sucker rod guide bearing |
| 05/16/2007 | CN2900861Y Linear motor oil pump |
| 05/16/2007 | CN2900860Y Intelligent straight support type oil pumping machine |
| 05/16/2007 | CN2900768Y Ground driving device for top mechinery seal screw oil pump |
| 05/16/2007 | CN1963142A Intelligent hydraulic oil production well device |
| 05/16/2007 | CN1963141A Hydraulic oil production method and device |
| 05/16/2007 | CA2563245A1 Mechanically actuated diaphragm pumping system |
| 05/09/2007 | CN2898451Y Belt adjuster of cooker hood |
| 05/09/2007 | CN2898365Y Double-stage passageway synergistic oil pump |
| 05/09/2007 | CN2898362Y Permanent electromagnetic cooker hood |
| 05/09/2007 | CN2898268Y Special oil-pipe anchor for screw pump |
| 05/09/2007 | CN1959111A Hydraulic thrust mechanism of axial force in electrical single-screw submersible pump |
| 05/02/2007 | CN2895801Y Leakage-reduced oil-gas mixed-extraction device |
| 05/02/2007 | CN2895798Y Magnetic suspension linear numerical-controlled oil-submersible electric pump |
| 05/02/2007 | CN2895797Y Ground double-extraction power system |
| 04/25/2007 | CN2893227Y Descaling oil-well pump |
| 04/25/2007 | CN2893222Y Pumping unit |
| 04/25/2007 | CN2893221Y Spring ring plunger self-rotary total barrel type oil-well pump |
| 04/25/2007 | CN2893220Y Efficient energy-saving rod oil-well pump capable of positive well flushing |
| 04/25/2007 | CN2893219Y Submerged motor capable of single and two directional changing charging and discharging water |
| 04/25/2007 | CN2893218Y Submerged motor |
| 04/25/2007 | CN1952394A Double-bridge oil-well pump |
| 04/18/2007 | EP1714031A4 Hydraulic ram pump |
| 04/18/2007 | CN2890414Y Stroke-frequency regulator for multifunctional oil-saving pumping unit |
| 04/18/2007 | CN2890413Y Double-bush oil-well pump |
| 04/18/2007 | CN2890412Y Pumping device for oil well |
| 04/18/2007 | CN1950605A Deep well irrigation pump |
| 04/17/2007 | US7204314 Fluid removal from gas wells |
| 04/17/2007 | CA2238582C Compact interbowl assembly coupler for vertical turbine pumps |
| 04/13/2007 | WO2007041823A1 Method and system for optimizing downhole fluid production |
| 04/12/2007 | WO2007040421A1 Downhole electric driven pump unit |
| 04/11/2007 | CN2888133Y Oil increasing device |
| 04/11/2007 | CN2888131Y Long-distance hydraulic driven down-hole pumping unit |
| 04/11/2007 | CN2888130Y Pumping unit with long-distance hydraulic reciprocating pump |
| 04/11/2007 | CN2888129Y Single-crank low-stroke-frequency energy-saving beam pumping unit |
| 04/11/2007 | CN2888128Y Dual-acting oil well pump |
| 04/11/2007 | CN1945016A Crankshaft type oil pumping machine |
| 04/04/2007 | CN2886223Y Crank moveable pulley for single-crank multiple-stroke flexible type pumping unit |
| 04/04/2007 | CN2886129Y Self-complementing type flexible sealing float-spacer sand-prevention pump |
| 04/04/2007 | CN2886127Y Sand-block-proof solid plunger rod type oil well pump |
| 03/28/2007 | CN2883802Y Pulley wear reduction and skid proofying gear of single-crank double-stroke flexible pumping unit |
| 03/28/2007 | CN2883730Y Linear dynamo oil-well pump |
| 03/28/2007 | CN2883729Y Linear dynamo pumping unit with built-in stator |
| 03/28/2007 | CN2883728Y Dual-action link type pump tube free oil-well pump |
| 03/21/2007 | EP1660755A4 Portable, surface-mounted well pump |
| 03/21/2007 | CN2881227Y Anti-ice device for pulloy of single crank multiple range flexible beam-pumping unit |
| 03/21/2007 | CN2881226Y Single crank multiple range flexible beam-pumping unit cantilever shaft fixed pulley |
| 03/21/2007 | CN2881214Y Speed reducing device of single crank multiple range flexible beam-pumping unit |
| 03/21/2007 | CN2881193Y Crank pin shaft driving wheel of single crank multiple range flexible oil pumping machine |
| 03/21/2007 | CN2881158Y Vertical beam-pumping unit |
| 03/21/2007 | CN2881157Y Improved beam type beam-pumping unit |
| 03/21/2007 | CN2881156Y Moving device of vertical beam-pumping unit |
| 03/21/2007 | CN2881155Y Hexa-link beam-balanced pump |
| 03/21/2007 | CN2881154Y Biaction pump sealing device |
| 03/15/2007 | WO2007008183A8 Hollow rod and a split casing pump for a deep-seated sucker rod pump |
| 03/14/2007 | CN2878725Y Oil production equipment with silo oil submersible screw pump |
| 03/13/2007 | US7188670 Plunger lift system |
| 03/13/2007 | CA2245644C Slant hole pumping unit |
| 03/07/2007 | CN2876376Y Interlocking type oil well pump auxiliary brake |
| 03/07/2007 | CN1926333A Hydraulic motor arrangement and method of operating a hydraulic motor |
| 02/28/2007 | CN2874065Y Closed long stroke oil pump |
| 02/28/2007 | CN2874064Y Rotary flow oil pump |
| 02/28/2007 | CN1920303A Single pump barrel two plunger pistons two circulation thick oil pump |
| 02/21/2007 | CN2871914Y Oil-submersible anticorrosive electric pump |
| 02/21/2007 | CN2871913Y Hole top unit of screw oil-pum |
| 02/21/2007 | CN2871912Y Long-ram and self-oil releasing sandproofing oil-pumping unit |
| 02/14/2007 | CN2869388Y Equal-wall-thickness stator screw pump for oil production |
| 02/14/2007 | CN2869382Y Electrohydraulic combined screw pump ground driving device |
| 02/14/2007 | CN2869381Y Dual oil-layer combined-production oil pump |
| 02/14/2007 | CN2869380Y Oil pipe pump |
| 02/14/2007 | CN2869379Y Eccentric valve type bias-wear-proof oil pump |
| 02/14/2007 | CN1912336A Oil production system of reciprocating submersible electric pump |
| 02/14/2007 | CN1300462C Sand proof blade guiding wheel |
| 02/13/2007 | CA2414685C Gas dissipation chamber for through tubing conveyed esp pumping systems |
| 02/13/2007 | CA2396136C Improved travelling valve for a pumping apparatus |
| 02/08/2007 | WO2007014638A1 Method for transmitting data between a pump unit and a control device, and an appropriately designed pump system |
| 02/07/2007 | CN2866904Y Booster water filling electric submersible pump |
| 02/07/2007 | CN2866900Y Efficient energy-saving rod oil-well pump |
| 02/07/2007 | CN1908434A Direct ground driving gear of screw pump |
| 02/06/2007 | US7172028 Reciprocating slickline pump |
| 02/01/2007 | WO2007012172A1 Drive assembly for a reciprocating pump utilizing a linear actuator |
| 01/31/2007 | EP1748573A1 Method for data transmission between a pump and a controlling unit and corresponding pump. |
| 01/31/2007 | CN1904363A Method and device of improving effect of rod oil pump and realizing energy saving of rod oil pump |
| 01/30/2007 | US7168924 Rod pump control system including parameter estimator |
| 01/25/2007 | WO2007010912A1 Suction pump |
| 01/25/2007 | WO2007009318A1 A reciprocation oil immersible electric magnet pump with cable wire |
| 01/25/2007 | WO2006122359A3 Hydraulic pump assembly |
| 01/24/2007 | CN2861555Y Ground driving double-screw pump oil production device |
| 01/24/2007 | CN2861551Y Integral-tube type oil-well pump |
| 01/24/2007 | CN2861549Y Driving medium of single crank double-stroke flexible pumping unit |
| 01/24/2007 | CN2861548Y Driving medium of single crank double-stroke flexible pumping unit |
| 01/24/2007 | CN2861547Y Power gearbox of single crank double-stroke flexible pumping unit |
| 01/24/2007 | CN1900521A Fishable linear motor reciprocating pump |
| 01/24/2007 | CN1900520A Layered oil producing screw pump |
| 01/24/2007 | CN1900478A Method for determining oil pumping machine well system parameter |
| 01/18/2007 | WO2007008183A1 Hollow rod and a split casing pump for a deep-seated sucker rod pump |
| 01/17/2007 | EP1629195A4 Hydrodynamic bearing runner for use in tilting pad thrust bearing assemblies for electric submersible pumps |
| 01/17/2007 | CN2858940Y Three-in-one oil pumping unit for universal oil well |