| 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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| 12/30/2009 | CN201372920Y Improved nomadic valve cover |
| 12/30/2009 | CN201372915Y Separate mining pump of pumping well |
| 12/30/2009 | CN201372914Y Hydraulic caliper-disc-brake ground driving device for single-screw oil-well pumps |
| 12/30/2009 | CN201372771Y Pump impacting device of pumping unit |
| 12/30/2009 | CN101614202A Double-deck defueling pump |
| 12/29/2009 | CA2443175C Control system for progressing cavity pumps |
| 12/23/2009 | WO2009152652A1 A dual-plunger self-rotatable oil well pump |
| 12/23/2009 | CN201368011Y Long plunger type anti-sand oil well pump |
| 12/23/2009 | CN201367888Y Gantry type support and automatic balance walking beam type oil extractor |
| 12/23/2009 | CN101608612A Double-plunger rotary oil well pump |
| 12/16/2009 | CN201363268Y Sand pump for square rod type horizontal well and inclined well |
| 12/16/2009 | CN201363262Y Well-used brine pump for eliminating crystals inside well-used brine pump quickly |
| 12/16/2009 | CN201363261Y Anti-burying oil-well pump |
| 12/16/2009 | CN201363260Y Phase-change energy-saving environmental-protection oil pumping unit by utilizing heat energy to convert carbon dioxide |
| 12/16/2009 | CN201363126Y Wind power oil extractor |
| 12/16/2009 | CN201363125Y Double-well-shared oil extractor |
| 12/16/2009 | CN101603523A Oil well pumping-assistant pump |
| 12/15/2009 | CA2580293C An oil well pumping apparatus |
| 12/15/2009 | CA2554856C Hydraulic ram pump |
| 12/15/2009 | CA2504503C Variable orifice bypass plunger |
| 12/10/2009 | WO2009146713A1 A pumping device for pumping fluid |
| 12/10/2009 | US20090304532 Multiple membrane pump for food liquids and the like |
| 12/10/2009 | CA2726696A1 A pumping device for pumping fluid |
| 12/09/2009 | EP1714031B1 Hydraulic ram pump |
| 12/09/2009 | CN201359004Y Structure of crank pinhole of pumping unit |
| 12/09/2009 | CN201358917Y Ground drive system for oil extraction screw pump |
| 12/09/2009 | CN201358910Y Oil pumping well W flow type deep well pump fixed valve uniflow valve |
| 12/09/2009 | CN101598193A Shift reducer special for oil field |
| 12/09/2009 | CN100567736C Reciprocating pump control system |
| 12/09/2009 | CN100567735C Oil-well pumping connection separator |
| 12/09/2009 | CN100567700C Oil production system of reciprocating submersible electric pump driven by sand-proof linear motor |
| 12/09/2009 | CA2842412A1 Universal pump holddown system |
| 12/09/2009 | CA2667695A1 Debris removal apparatus for a pump and method |
| 12/08/2009 | CA2548908C A nc reciprocating immersible oil pump |
| 12/02/2009 | CN201354727Y Pump efficiency improving device of oil well pump |
| 12/02/2009 | CN101592175A Expansion and shrinkage type horse head pin of pumping unit |
| 12/02/2009 | CN101592147A High-speed high-pressure deep well pump special for oilfield flooding |
| 12/01/2009 | CA2566711C Electroactive polymer pumping system |
| 11/24/2009 | CA2523386C Cyclonic debris removal device and method for a pumping apparatus |
| 11/18/2009 | CN201347851Y Torque releasing device for screw pump well |
| 11/18/2009 | CN201347850Y Mixed defueling pump |
| 11/18/2009 | CN201347849Y Anti-impact stroke lifting device of screw pump |
| 11/18/2009 | CN201347738Y Oil pumping state converting and enhancing device |
| 11/18/2009 | CN101581293A Self-lubricating string for rod and tubing wear prevention and sucker rod pumping of inclined wells |
| 11/18/2009 | CN100561007C Belt tension device of pumping unit capable of implementing adjusting and replacing in two minutes |
| 11/18/2009 | CN100560977C Plunger type oil pump driven by linear motor |
| 11/17/2009 | CA2601277C Protector for electrical submersible pumps |
| 11/17/2009 | CA2371369C Lubrication system for downhole application |
| 11/16/2009 | CA2631861A1 Pump jack assembly |
| 11/13/2009 | CA2631994A1 Low rate hydraulic artificial lift |
| 11/11/2009 | CN201344110Y Electric submersible pump roller stabilizer |
| 11/11/2009 | CN201344022Y Direct-and-reverse-circulation integrated hydraulic jet oil production system |
| 11/11/2009 | CN101576074A Reciprocating electric submersible pump |
| 11/11/2009 | CN101575962A Asymmetrical cycle compound-balanced pumping unit |
| 11/11/2009 | CN101575961A Oil pumping device and production method thereof |
| 11/10/2009 | CA2430183C Mechanically actuated gas separator for downhole pump |
| 11/05/2009 | WO2009097338A3 Hydraulic oil well pumping apparatus |
| 11/05/2009 | US20090272548 Water pump assembly |
| 10/29/2009 | US20090269224 Submersible pumping system with heat transfer mechanism |
| 10/29/2009 | US20090266186 Ring Rack Oil Pumping Machine |
| 10/28/2009 | CN100554687C Beam-free sliding oil sucker with eccentric wheel |
| 10/28/2009 | CN100554686C Down-hole screw pump oil production device |
| 10/27/2009 | US7607901 Wear rings for downhole pump |
| 10/21/2009 | CN201330589Y Erection type hydraulic pumping unit capable of being pushed upwards and draught downwards |
| 10/20/2009 | US7604464 Mechanically actuated gas separator for downhole pump |
| 10/20/2009 | CA2568959C Collar locator for slick pump |
| 10/15/2009 | DE102008018407A1 Unterwasserförderaggregat Underwater delivery unit |
| 10/14/2009 | CN201326537Y Deep pumping plunger oil-well pump |
| 10/14/2009 | CN201326536Y Anti-airlock heavy oil well pump |
| 10/14/2009 | CN201326535Y Double-plunger suspended anti-airlock oil pump |
| 10/13/2009 | US7600982 Compact helical compressor for mobile use in a vehicle |
| 10/13/2009 | US7600566 Collar locator for slick pump |
| 10/07/2009 | CN201321968Y Layer mining oil-well pump |
| 10/07/2009 | CN201321967Y Rotating plunger oil-well pump with actuating cylinder |
| 10/07/2009 | CN201321966Y Multi-section centering self-rotating oil-well pump |
| 10/07/2009 | CN201321965Y High pressure pump |
| 10/07/2009 | CN201321825Y Polish rod breakage prevention device |
| 10/07/2009 | CN201321822Y Axial flow drill rod for pumping water |
| 10/07/2009 | CN101553641A Dual cylinder lift pump system and method |
| 10/07/2009 | CN101550931A Multi-head equal-wall thickness anticorrosive screw pump |
| 10/06/2009 | US7597143 Method and apparatus for logging downhole data |
| 10/06/2009 | CA2567524C Slidable sleeve plunger |
| 10/01/2009 | US20090246049 Coated cylinder for walking beam compressor |
| 10/01/2009 | US20090246037 Safety clamp for walking beam compressor |
| 10/01/2009 | US20090243223 Stuffing box for walking beam compressor |
| 09/30/2009 | CN201318266Y Screw pump capable of having pressure test |
| 09/30/2009 | CN101545477A Cavity capsule type air-pressure guide pump |
| 09/30/2009 | CN101545365A Fine adjustment counterbalance for oil pumping unit |
| 09/29/2009 | CA2284380C Top coupling arrangement for a reciprocating pump |
| 09/24/2009 | WO2009046108A3 Oil well pump apparatus |
| 09/23/2009 | CN201314290Y Novel deep well submerged pump |
| 09/23/2009 | CN101539135A Intelligent monitoring device for screw pump well |
| 09/23/2009 | CN101539134A Diaphragm hydraulic defueling pump |
| 09/23/2009 | CN101539133A Feedback type oil-well pump |
| 09/23/2009 | CN101539004A Epicycloidal beam pumping unit |
| 09/23/2009 | CN101539001A Inclined type long annular rack oil pumping machine |
| 09/23/2009 | CN101539000A Automatic reverse wheel of variable force arm of oil sucking machine |
| 09/23/2009 | CN101538999A Gas treatment in well environment |
| 09/23/2009 | CN100543303C Hydraulic driving gear oil-well pump |
| 09/17/2009 | WO2009111970A1 Hydraulic cylinder, oil pumping unit, oil pumping module and oil pumping system |