Famous Patents
The first match was accidentally discovered in 1826 when John Walker scraped a stick with chemicals on the end against a stone floor.
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 7347259 | Downhole oilfield erosion protection by using diamond A device for use with components for a downhole tool—such as a throat, a nozzle, or a diffuser—used for cleaning a wellbore, are disclosed which decreases the erosion of the components. The device may be comprised of a hardened material, such as stack of pure di... | 03/25/2008 |
| 7331397 | Gas drive fluid lifting system A passive collection and pneumatic lifting system located in a well comprising a pneumatic tube, a fluid tube mounted within the pneumatic tube creating an annulus and a jet barrel chamber formed between the pneumatic tube and fluid tube in fluid communication at th... | 02/19/2008 |
| 7255175 | Fluid recovery system and method A fluid recovery system 10 for collecting formation fluid at the surface of a well 12 includes a downhole jet pump 20 and a surface diaphragm pump 40 having a plurality of diaphragms 42. The jet pump includes a fluid nozzle 22 | 08/14/2007 |
| 7222675 | Downhole draw down pump and method An apparatus and method for drawing down a fluid level in a wellbore which has a first tubular disposed within the wellbore so that a wellbore annulus is formed. The apparatus further includes an annular nozzle operatively attached to the first tubular, and wherein ... | 05/29/2007 |
| 7219737 | Subsea wellhead arrangement for hydraulically pumping a well A subsea well pumping system for installing and retrieving a hydraulically actuated down hole pump employed within the tubing suspended within casing extending from above a seabed, the system having a wellhead assembly affixed to the upper end of the casing for supp... | 05/22/2007 |
| 7165948 | Ejector A nozzle (41) is made of a sintered metal, and a pressure increasing portion (a mixing portion (42) and a diffuser (43)) is manufactured by plastic-forming a metal pipe. Accordingly, the nozzle (41) can be manufactured in a short time whi... | 01/23/2007 |
| 7090011 | Method for operating a well jet device during repair and insulating operations and device for carrying out said method The inventive method consists in the following: a drillable packer provided with a channel closed by a back valve is arranged in a well; afterwards a tubing string carrying a jet pump and a stinger is run into said well, the stringer being connected to the packer; t... | 08/15/2006 |
| 7086417 | Gas flow control device Invention is of an improvement to seat of gate valves used for gas-lift producing oil wells, consisting of a seat lower part of which is curved there being a straight vertical art and a sloping straight lower part, central spacing consisting of a first part in the s... | 08/08/2006 |
| 7073597 | Downhole draw down pump and method An apparatus and method for drawing down a fluid level in a wellbore which has a first tubular disposed within the wellbore so that a wellbore annulus is formed. The apparatus further includes an annular nozzle operatively attached to the first tubular, and wherein ... | 07/11/2006 |
| 7063161 | Artificial lift with additional gas assist Well pumping of fluids having low hydrostatic pressure is provided through a combination of jet pumping and gas assisted lifting. A jet pump is located in a borehole in a producing zone of a well, and a source of gas is introduced into the fluid returning from the p... | 06/20/2006 |
| 7048514 | Downhole jet unit for testing and completing wells The invention relates to pumping engineering, mainly to downhole jet production units. The inventive downhole jet unit comprises a packer, a pipe column and a jet pump. An active nozzle and a mixing chamber are axially arranged in the body of the jet pump, and a pas... | 05/23/2006 |
| 7025139 | Method and operation of a well jet device inkwell testing and development and the well jet device for carrying out said method The invention relates to jet device used for extracting oil from wells. The inventive method consists in the following: a pump, a connecting and disconnecting unit, a valve unit, a packer and a shank are mounted on a tubing string before actuating the inventive devi... | 04/11/2006 |
| 6971460 | Downhole jet unit for testing and completing wells The invention relates to pumping engineering, mainly to downhole jet production units. The inventive downhole jet unit comprises a packer, a pipe column and a jet pump. An active nozzle is embodied in the body of the jet pump, and a pass channel provided with a moun... | 12/06/2005 |
| 6966366 | Plunger enhanced chamber lift for well installations The present invention is addressed to a method of retro-fitting a well installation to reconfigure it to provide plunger enhanced chamber lift. The method comprises the steps of providing a reel-carried supply of coil tubing, a primary seating nipple assembly, a pri... | 11/22/2005 |
| 6948917 | Valving system for a downhole hydraulically actuated pump An engine for actuating a hydraulic downhole pump having a piston vertically reciprocated in a cylinder includes a reversing valve carried with the power piston and serving, when in a first position, to direct fluid flow to force the piston upwardly and in a second ... | 09/27/2005 |
| 6926080 | Operation method of an oil well pumping unit for well development and device for performing said operation method The invention relates to pumping units for extraction oil from oil wells comprising, all of them being installed on the piping string, a packer, a back pressure valve, a jet pump having the active nozzle, the mixing chamber, the diffuser and the central channel for ... | 08/09/2005 |
| 6382321 | Dewatering natural gas-assisted pump for natural and hydrocarbon wells A tool having a tube string made of inner and outer coaxial tubes, and a dewatering natural gas-assisted pump at the bottom of the tube string. The pump includes a nozzle, an eductor, and a diffuser. The nozzle has a central inlet and a number of primary ... | 05/07/2002 |
| 6354371 | Jet pump assembly A jet pump assembly 10 for use in a subterranean wellbore 82 to lift produced fluids 72 to the surface, comprising a fixed type jet pump assembly 10 including a retrievable insert assembly 30 for retrieving substantially all working components of the jet ... | 03/12/2002 |
| 6086334 | Method of operating a bi-turbojets polyphasic pump with axial thrust cancellation A pumping device providing direct energy exchange between a working fluid and a pumped fluid, comprising at least a first ejector propelling the working fluid in one direction and at least a second ejector propelling working fluid in a second direction. T... | 07/11/2000 |
| 5827049 | Bi-turbojets polyphasic pump with axial thrust cancellation A pumping device providing direct energy exchange between a working fluid and a pumped fluid, comprising at least a first ejector propelling the working fluid in one direction and at least a second ejector propelling working fluid in a second direction. T... | 10/27/1998 |
| 5667364 | Downhole hydraulic pump apparatus having a "free" jet pump and safety valve assembly and method A downhole hydraulic pump apparatus for a well assembly including a rigid, elongated production tubing extending into a formation producing production fluid. The hydraulic pump apparatus includes an elongated tube and a bottom-hole assembly mounted to a l... | 09/16/1997 |
| 5651664 | "Free" coil tubing downhole jet pump apparatus and method A hydraulic pump apparatus (35) for a well assembly (36) including a rigid, elongated tubular casing (37). extending into a formation producing production fluid. The hydraulic pump apparatus (35) including an elongated tube (40) and a bottom-hole assembly... | 07/29/1997 |
| 5555934 | Multiple well jet pump apparatus The apparatus is a pumping system for multiple wells which uses a single circulating pump and two or more venturi jet pumps, at least one jet pump for each well. The circulating pump furnishes feed water to the several jet pumps, with the vacuum line of e... | 09/17/1996 |
| 5374163 | Down hole pump A down-hole pump provides positive displacement pump action within a production string of a producing well. The insert pump of the present invention fits within a crossover nipple that is adapted to fit on the end of a production string. The pump seals wi... | 12/20/1994 |
| 5372190 | Down hole jet pump A down hole jet pump having various unique features which enables the pump to be used with various types of producing wells including those which produce gas along with a large ratio of water which may include considerable abrasive solid materials and can... | 12/13/1994 |
| 5108600 | Surface cleaning apparatus A separator jet to separate a first liquid from a second liquid upon which the first liquid is floating. The separator jet has a main body with a base and a top. There is an inlet nozzle in the base to receive a transport fluid. An outlet nozzle with a di... | 04/28/1992 |
| 5080560 | Dryrite borehole dewatering system Apparatus for extracting water comprises an air compressor, a diaphragm type suction pump, a jet pump for insertion into a borehole and a suction line connecting the jet pump to the diaphragm pump. Air to accelerate water through the jet pump and into the... | 01/14/1992 |
| 5055002 | Downhole pump with retrievable nozzle assembly A downhole jet pump has a nozzle assembly arranged respective to a pump housing whereby the nozzle assembly can be circulated uphole from the pump and circulated back downhole to the pump in order to renew the nozzle assembly. A special packer nose assemb... | 10/08/1991 |
| 4860825 | Device for positioning a tool or instrument in a duct A device for positioning a tool or instrument in a duct and recovering the tool or instrument therefrom by causing a vector fluid to flow through the device. The device includes a tubular element adapted to be connected to the tool or instrument and an an... | 08/29/1989 |
| 4832577 | Vortex pump Pumping system that uses compressed air to pump fluids continuously without inducing disturbances to the surrounding hydrologic regime. The suction source of the pumping system is the vacuum-drawing effect of a vortex created by a reflected air stream on ... | 05/23/1989 |
| 4790376 | Downhole jet pump A hydrocarbon producing well is pumped with a jet pump device. The jet pump is set below a packet in the well. A power fluid conduit leads from a location above the packer to the power fluid inlet of the jet pump. A produced fluids conduit leads from the ... | 12/13/1988 |
| 4753577 | Fluid powered retrievable downhole pump A jet pump system including a pump body having a nozzle carrier, a pump housing, and a cross-over housing connected in axially alignment. A flow discharge housing extends from the cross-over housing up to near the nozzle carrier. An injector nozzle having... | 06/28/1988 |
| 4744730 | Downhole jet pump with multiple nozzles axially aligned with venturi for producing fluid from boreholes A downhole pump of the jet type is placed below the fluid level in a wellbore and is used to produce fluid from the wellbore by employment of a power fluid source located above the surface of the ground. The power fluid flows downhole to the pump and thro... | 05/17/1988 |
| 4726420 | Oil well pumping system An oil well is pumped with a jet pump using, as the power fluid, field salt water preferably from the same formation that the well is completed in. The jet pump comprises a series of metallic cylindrical components that are clamped together in a housing c... | 02/23/1988 |
| 4723890 | Articulated jet pump, usable more particularly in TFL technique for activating hydrocarbon or water producing wells An articulated jet pump is provided usable more particularly in TFL techniques for activating hydrocarbon or water-producing wells. The pump of the invention may be positioned in production tubing by travelling through this tubing as far as the chosen pos... | 02/09/1988 |
| 4718486 | Portable jet pump system with pump lowered down hole and raised with coiled pipe and return line A jet pump system that is portable on a truck or equipment skid and transportable from well to well and useable from the truck or equipment skid for the lowering and withdrawal of the jet pump down and up from a well with coiled pipe and coiled return lin... | 01/12/1988 |
| 4664603 | Petroleum recovery jet pump pumping system A petroleum recovery pumping system comprising an improved jet pump having a nozzle assembly adapted to be selectively and reversibly installed in either an up-flow or down-flow direction, and a shoe adapted to receive and seat the jet pump adjacent to a ... | 05/12/1987 |
| 4658893 | Jet pump with reverse flow removal of injection nozzle A down the hole product flow jet pump with a reverse flow removable injection nozzle that can be in the form of an orifice member placed in a plug or a one piece orifice and plug member that is moveable up and down the pumping fluid line dependent on the ... | 04/21/1987 |
| 4605069 | Method for producing heavy, viscous crude oil Disclosed is a process whereby heavy, viscous crude oil may be produced from a hydrocarbon-bearing formation utilizing a jet pump without the problems associated with cavitation damage of the jet pump found in the prior art. The jet pump is operated with ... | 08/12/1986 |
| 4603735 | Down the hole reverse up flow jet pump A reverse up flow jet pump used in an oil and gas pumping system having a positive displacement pump on the surface supplying water flow under pressure to the jet pump down the hole. The jet pump is used in a system drawing a vacuum reducing if not elimin... | 08/05/1986 |
