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| Number | Title | Issue Date |
| 7699097 | Mover stabilizing and stator cooling arrangement of a 3-phase linear motor of a submersible oil pump A mover stabilizing and stator cooling arrangement includes an upper sleeve surrounding the mover of the linear motor, a lower sleeve, a thermoconducting sleeve surrounding the stator and axially connected between the upper sleeve and the lower sleeve. The arrangeme... | 04/20/2010 |
| 7597138 | Ground water heat transfer systems and deployment thereof The present invention features ground water heat transfer systems utilizing polypipes. A typical system of the invention comprises (1) a water pump which is suspended or affixed in a deep well and connected to at least one inlet polypipe, where the inlet polypipe(s)... | 10/06/2009 |
| 7363979 | Down hole oil and gas well heating system and method for down hole heating of oil and gas wells A down hole heating system for use with oil and gas wells which exhibit less than optimally achievable flow rates because of high oil viscosity and/or blockage by paraffin (or similar meltable petroleum byproducts). The heating unit the present invention includes sh... | 04/29/2008 |
| 7325600 | Coil tubing hanger and method of using same A coil tubing hanger includes a hanger body having a hanger base with a lower end for connection to a well tree, an upper end for connection of a hanger cap and an internal cylindrical cavity for receiving an annular, externally actuated, pack-off element for select... | 02/05/2008 |
| 7320364 | Inhibiting reflux in a heated well of an in situ conversion system Certain embodiments provide a method for treating a subsurface formation. The method includes using heaters to form a heated portion of the subsurface formation. A production conduit is used to direct formation fluid in a vapor phase from the heated portion of the s... | 01/22/2008 |
| 7299873 | Method for pumping fluids The production rate, useful life and operating efficiency of electric submergible pumping systems (ESP) is improved by operating the system so that the motor (220, 320) is cooled by two passes of production. Production fluids remove waste heat from the motor ... | 11/27/2007 |
| 7278489 | Gas turbine for oil lifting Gas turbine driven oil lifting device for increasing the quantity of oil obtained over a specified time (e.g. barrels per day) and the percentage of total amount obtained from oil-bearing geological deposits. The device is installed in a technical column (1) ... | 10/09/2007 |
| 7246662 | Systems and methods for controlling flow control devices A device for determining a location of an interface between a first fluid and second fluid includes a non-mechanical sensor that measures a selected parameter of interest relating to the fluid surrounding the sensor (“the surrounding fluid”) and a processor for ... | 07/24/2007 |
| 7207390 | Method and system for lining multilateral wells In accordance with one embodiment of the present invention, a method for lining a lateral wellbore includes drilling a main wellbore extending from a surface to a subterranean zone, casing the main wellbore with a main casing having a plurality of lateral wellbore w... | 04/24/2007 |
| 7090153 | Flow conditioning system and method for fluid jetting tools According to one embodiment of the invention, a flow conditioning system for fluid jetting tools includes a housing having a plurality of jet nozzle openings and a fluid straightener disposed within the housing. The fluid straightener is defined by one or more vanes... | 08/15/2006 |
| 7037105 | Heating apparatus for wells An apparatus for warming objects such as production conduits at a well site comprises an internal combustion engine driving a well pump. A heat exchanger shell is connected to an exhaust port of the engine, and has an output port. A circulating pump is driven by the... | 05/02/2006 |
| 6691782 | Method and system for below motor well fluid separation and conditioning A method and system for downhole treatment and pumping of well fluids enhances the pumping of viscous fluids to the surface. The first step is to separate the oil and water from the well fluid and then channel the oil to a chamber that encloses the motor.... | 02/17/2004 |
| 6598681 | Dual gearbox electric submersible pump assembly The present invention provides a electric submersible pump assembly for producing a fluid from a production zone to the surface and operated independently by one or more electric submersible motors using a dual or multiple gearbox, the electric submersibl... | 07/29/2003 |
| 6564874 | Technique for facilitating the pumping of fluids by lowering fluid viscosity A viscosity handling system for facilitating the movement of certain fluids. The system utilizes kinetic energy in the form of a rapidly and repetitively moving component that imparts energy in the form of heat to surrounding fluid. The system is particul... | 05/20/2003 |
| 6343652 | Method and device for cleaning out a well or piping blocked with gas hydrates A method and apparatus for unplugging a well or pipe obstructed by a gas hydrates. According to the invention, a moving heating element is applied against one end of the hydrate plug, and is displaced axially in the tube or the pipe towards the other end,... | 02/05/2002 |
| 6318467 | System and method for pumping and heating viscous fluids in a wellbore A system for pumping and heating viscous fluids in a wellbore includes electrical power supplies, a switchboard, conductors, and a submergible pumping system having a pump and a submergible electric motor. The electrical power supplies are coupled to the ... | 11/20/2001 |
| 6206093 | System for pumping viscous fluid from a well A system allows the pumping of viscous fluids from a wellbore. The system includes a submergible pump and a pump intake through which a fluid may be drawn. A submergible electric motor powers the submergible pump, and a heater is connected in the pumping ... | 03/27/2001 |
| 6092598 | Method and apparatus for measuring operating parameters of a submergible pumping system A sensor assembly is used with a submergible pumping system within a wellbore. The sensor assembly is an integral part of the string of submergible components that form the submergible pumping system. One embodiment of the sensor assembly utilizes a senso... | 07/25/2000 |
| 6039121 | Enhanced lift method and apparatus for the production of hydrocarbons extending into a hot subterranean hydrocarbon-bearing formation containing water at greater than 100° C. The wellbore is divided into three co-extensive passageways; an annulus, and first and second conduits. The annulus is formed within the wellbore bet... | 03/21/2000 |
| 6006837 | Method and apparatus for heating viscous fluids in a well A system for heating viscous fluids in a wellbore includes a submergible pumping system comprising a pump and submergible electric motor. A heating unit is coupled to the pumping system and is supplied with electrical energy through a cable used to supply... | 12/28/1999 |
| 5620048 | Oil-well installation fitted with a bottom-well electric pump Oil-well installation extending from the surface (14) to an oil-bearing rock stratum (16) comprising a tubing (20), arranged in the well and forming a flow channel to the surface for hydrocarbons originating from the oil-bearing rock stratum, a casing (18... | 04/15/1997 |
| 5607018 | Viscid oil well completion A horizontal well completion apparatus and method for heavy, viscous oil in a producing zone (114) are disclosed using a single well. Hot injection fluid is injected into an injection string (120), and emitted through steam distribution holes (133) in the... | 03/04/1997 |
| 5553666 | Standoff insulator and method for well pump cable A standoff insulator and support for an elongated power cable disposed adjacent to a fluid conducting tubing string for a fluid production well utilizing an electric submersible pump connected to the tubing string. The pump power cable is held in a stando... | 09/10/1996 |
| 5126037 | Geopreater heating method and apparatus A separate heat source, such an a skin effect heater, is added to a subterranean heat exchanger and oxygen combustion device for upgrading viscous crude oil feeds. An insulated wire is integrated with combustion oxygen supply piping to form the skin effec... | 06/30/1992 |
| 5040605 | Oil recovery method and apparatus A method and apparatus are provided for the recovery of a heavy oil, contained in an outcropping formation, without any significant adverse environmental impact. Broadly, the invention comprises indirectly heating an oil containing formation to reduce the... | 08/20/1991 |
| 5009264 | Well production apparatus including pump means and thermal absorption means A well production apparatus includes a tubular production conduit which extends from the top of the well to a production zone interior of casing. An electric submersible pump has a production fluid flow passageway which communicates between the exterior o... | 04/23/1991 |
| 4988389 | Exploitation method for reservoirs containing hydrogen sulphide A method of producing fluids from subterreanean reservoirs containing hydrogen sulphide and especially those reservoirs where elemental sulphur or hydrogen polysulphides are present. The method describes the use of a jet pump, chemical injection, and down... | 01/29/1991 |
| 4944634 | Anti-friction composition containing MgO and method Magnesium oxide is included in a bentonite clay anti-friction composition in an amount of 0.025-0.5% based on the dry weight of the clay to substantially improve the efficiency of underground cable or pipe installation. The anti-friction composition is ap... | 07/31/1990 |
| 4911239 | Method and apparatus for removal of oil well paraffin A method and apparatus for reducing the accumulation of paraffin within an oil well that includes forming an electric circuit contact between the oil well sucker rod and tubing and connecting a power source to the sucker rod and tubing. An electric curren... | 03/27/1990 |
| 4878540 | Apparatus and process for pumping fluid from subterranean formations Apparatus for pumping fluid from a subterranean reservoir. The apparatus has in combination a well casing and a hollow tube disposed concentrically within the well casing. Secured to the end of the hollow tube is a hollow housing which includes a motor an... | 11/07/1989 |
| 4865130 | Hot gas generator with integral recovery tube A housing surrounds a portion of a tubular member forming a combustion chamber in the annulus between the housing and the tubular member. The housing has an upper end and a lower end with a port for the passage of hot gases. The tubular member has a port ... | 09/12/1989 |
| 4790375 | Mineral well heating systems Heating systems for mineral wells (e.g. oil wells) employ electrical power sources, sometimes operating at relatively high frequencies, that are connected to the well casing and production tubing so as to provide a coaxial line electrical heater projectin... | 12/13/1988 |
| 4716960 | Method and system for introducing electric current into a well An invention for supplying power to a well. In one embodiment power heats a tubing from adjacent the surface to a selected level to prevent the formation of solids. The tubing is heated by passing an electric current therethrough. In one form the tubing i... | 01/05/1988 |
| 4687420 | Sonic pressure wave pump with liquid heating and elevating mechanism A pump for heating high viscosity oil and elevating it to a ground level from a subterranean level. The pump, which is preferrably of the type which produces and is operated by sonic pressure waves of special character, includes a ground level generator f... | 08/18/1987 |
| 4609041 | Well hot oil system The invention pertains to the removal of paraffin deposits from oil producing wells wherein hot fluids are used to melt the deposits. A conduit system consisting of tubing concentric to the well tube carries hot oil to the well tube at a location below th... | 09/02/1986 |
| 4538858 | Apparatus for drilling and inserting a horizontal pipe A horizontal earth boring machine is disclosed of the type in which a carriage supports an engine rotatably connected to an auger, and a push ring. The carriage is movable along a set of tracks between a forward position and a rearward position. Hydraulic... | 09/03/1985 |
| 4502535 | Jet engine pump and downhole heater A pumping system (10) is disclosed for pumping a fluid (14) from within a borehole (12) to the surface. A combustion engine (18) is employed to drive a pump comprising a pump barrel (28) and an auger pump shaft (32). The pumped fluid is carried from the b... | 03/05/1985 |
| 4157847 | Method and apparatus for utilizing accumulated underground water in the mining of subterranean sulphur Novel method and apparatus for utilizing, in the mining of subterranean sulphur by the Frasch process, the heat of water that has accumulated underground above at least a part of said subterranean sulphur from previous mining operations comprising subterr... | 06/12/1979 |
| 4154297 | Lift gas heat exchanger In order to prevent freezing of the input lift gas in an oilwell in which gas under pressure is used to lift the well fluids, a heat exchanger is provided which serves to heat the input gas from the warm well fluids. The heat exchanger includes an outer c... | 05/15/1979 |
| 4099570 | Oil production processes and apparatus A process and apparatus is described for use in the recovery of oil from natural oil-bearing formations such as tar sands by means of thermal energy causing the oil to gravity in the formation into an oil-receiving duct. Oil recovery in relation to instal... | 07/11/1978 |
