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Kobe, Inc. Patents
Assignee:
Kobe, Inc.
Address:
Huntington Park, CA
No. of patents:
62
Patents:


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Patent Number Title Of Patent Date Issued
RE30836 Liquid-gas separator unit December 29, 1981
A liquid-gas separator unit with superior performance characteristics is disclosed. The unit is characterized by a high liquid flow rate capacity at high as well as low accompanying gas flow rates, and efficient liquid-gas separation capability. The unit has a unique discharge plug e
4449582 Sequenced production incorporating fluid rod pump May 22, 1984
A surface power unit for use on a subterranean well generates a series of pulses of pressurized fluid to a downhole pump. A sequencing mechanism connects and disconnects the surface power unit to each of a plurality of downhole pumps in a predetermined order such that a pulse of pressuri
4436492 Surface power unit for a downhole pump March 13, 1984
A surface power unit for use on a subterranean well generates a series of pulses of pressurized fluid to a downhole pump. A pump means generates a flow of fluid from a reservoir through a charging line to a charging side of a cylinder. A piston is slidably disposed within the cylinder, d
4425086 Combined surface power unit and velocity actuated valve for a downhole pump January 10, 1984
A combined surface power unit and velocity actuated valve for a downhole pump is disclosed. The surface power unit generates a series of pulses of pressurized fluid. A power line supplies the fluid pulses to a downhole pump. Within the downhole pump, a piston means is slidably disposed f
4425083 Velocity actuated valve for a downhole pump January 10, 1984
A downhole pump for a well is disclosed which includes a piston slidably disposed within a housing for pumping fluid from the well. The longitudinal axes of the piston and the housing extend in a generally vertical direction with respect to the surface of the well. A surface unit sup
4381175 Jet electric pump April 26, 1983
A pump assembly for limited production wells comprises an electric motor driven centrifugal pump having a controlled amount of recirculation through a jet pump. The recirculated fluid is the power fluid for the jet pump, which aspirates production fluid. The combined output of the jet
4346256 Conduit in supplying electrical power and pressurized fluid to a point in a subterranean well August 24, 1982
A conduit is provided for transmitting both electrical power and pressured hydraulic fluid from the surface to a point in a subterranean well. The conduit comprises an outer housing formed of steel or other high tensile strength material and one or more insulated wires of copper or simil
4332521 High speed jet rotating casing apparatus June 1, 1982
A fluid compressor of the pitot type includes a high speed, high stress rotary casing. The casing is formed from a pair of tapered discs spaced apart and mounted for rotation about an axis. The discs form the end walls of the casing. A side wall is connected between the opposed periphera
4323285 Dual thrust bearing for a shaft April 6, 1982
A dual thrust bearing arrangement is provided for a shaft subject to axial thrust which accomplishes, under all conditions, an exact division of the total thrust on the shaft into two equal components which are respectively applied to the thrust bearings.
4322199 High specific speed rotary chamber pump March 30, 1982
An improved design of a rotary pump is provided having a rotary pumping chamber with stationary axially disposed fluid inlet and outlet passages communicating therewith. To increase the rotational speed and the flow capacity, the axial inlet passage is enlarged in diameter to approach th
4310288 Method and apparatus for improving erosion resistance of the mixing chamber of a jet pump January 12, 1982
To improve the erosion resistance of the mixing chamber of a jet pump employed to pump particulate containing fluids, this invention contemplates directing a pressurized source of clean fluid through an annular jet-type orifice, thus providing an annular jet of high velocity clean fl
4304410 Sealing structure for reciprocating pistons exposed to high pressure differentials December 8, 1981
This invention effects a significant reduction in leakage along a piston reciprocating in a cylinder and having a high fluid pressure differential existing between one end of the piston and the other. A large number of closely spaced, annular grooves are provided on the periphery of the
4299352 Centrifuge apparatus November 10, 1981
A centrifuge apparatus for separating materials of different densities having means for the removal of the more dense materials utilizing a jet of pressure fluid to assist in moving the more dense materials to an appropriate outlet from the apparatus.
4294573 Submersible electrically powered centrifugal and jet pump assembly October 13, 1981
A petroleum well has a plurality of centrifugal pump stages, a jet pump stage, and an electrical drive motor. A recirculated portion of the output from high pressure stages of the centrifugal pump provides power fluid for the jet pump, and the jet pump aspirates fluid from lower pressure
4292011 Turbo pump gas compressor September 29, 1981
An improved power fluid driven turbo pump is provided for pumping oil wells of the type having, from time-to-time, significant quantities of gas included in the oil so that wide variations in the density of the medium to be pumped may be expected to be encountered. Two separate pumping u
4289610 Apparatus for pumping and conditioning drilling fluid September 15, 1981
The invention relates to an apparatus for pumping and conditioning a drilling fluid normally utilized in the drilling, completion or workover of a subterranean oil or gas well. The apparatus includes a rotor housing encasing a rotatably supported rotor assembly and means for driving the
4286185 Oil drying system for motors August 25, 1981
A circulation and drying system is provided for the lubricating oil of a submersible motor of the type employed in pumping oil wells. The lubricating system provides a forced, closed system circulation of the lubricating oil for a submersible motor, including an expandable chamber at
4285401 Electric and hydraulic powered thermal stimulation and recovery system and method for subterrane August 25, 1981
A thermal recovery system for a subterranean well includes an electric heater located immediate the bottom of the well which cyclically receives electric power generated at the well surface. A pump directs a stream of pressurized fluid, such as water, through a conduit to a solenoid valv
4283005 Pump and centrifugal separator apparatus August 11, 1981
The invention relates to agitating means for preventing the accumulation of particulate matter at the contaminate outlet orifices in a pump and centrifugal separator apparatus. The pump-separator apparatus includes a rotatable casing forming a chamber for centrifugally separating the oil
4283005 Pump and centrifugal separator apparatus August 11, 1981
The invention relates to agitating means for preventing the accumulation of particulate matter at the contaminate outlet orifices in a pump and centrifugal separator apparatus. The pump-separator apparatus includes a rotatable casing forming a chamber for centrifugally separating the oil
4281962 High pressure centrifugal pump August 4, 1981
A centrifugal pump is provided for generating a relatively high pressure fluid discharge. The pump includes a stationary, enclosed rotor housing having a fluid inlet and a fluid outlet. A rotor assembly is rotatably supported in the rotor housing. The rotor assembly includes a chamber
4280790 Centrifugal pitot pump with means for improving net positive suction head July 28, 1981
A centrifugal pitot pump has a rotor driven in rotation within a casing. A pitot tube pickup in a rotor chamber within the rotor intercepts rotating fluid and withdraws the fluid through a duct. The duct mounts the pitot tube and passes through the rotor casing. Fluid to be pumped passes
4280662 Erosion resistant jet pump and method of making same July 28, 1981
This invention provides an improved jet pump having a Venturi chamber defined by a coating of a ceramic or alloy material that is highly resistant to both stress and erosion. The coating is applied by the chemical vapor technique upon a heated substrate of graphite. The graphite is t
4279571 Pitot pump with fluid lubricated bearings July 21, 1981
A hollow casing defining a fluid chamber is rotated relative to a stationary pitot tube mounted within the casing. The pitot tube is supported by a stationary hollow discharge tube whose bore defines the fluid outlet passage for the pump. An annular fluid inlet passage is provided su
4278399 Pumping stage for multi-stage centrifugal pump July 14, 1981
An improved diffusion bowl and pumping vanes of a centrifugal pump stage are employed in axially stacked, multi-stage pumps for use in oil wells. The wall thickness of the annular casing portion of the diffusion bowl element is reduced to a minimum consistent with the axial loading on th
4273509 Self-powered cleaning unit for a fluid pump June 16, 1981
The invention relates to a cleaning unit for power driven pumps which are required to pump fluids containing significant quantities of particulate material of greater spcific gravity than the fluid. A portion of the pressured fluid output of the pump is utilized to drive a fluid motor
4269872 Method of producing an erosion resistant surface May 26, 1981
An erosion resistant surface is provided for pump components, valves, fluid conduits, diffusion chambers, fluid cleaners, and the like, wherein the surface is exposed to high velocity flow of a fluid containing abrasive particulates. Sharply increased erosion life of such surfaces can be
4268281 Method of removing particulate contaminants from a gas stream May 19, 1981
A gas separation apparatus is provided for removing moistened particles from a stream of air by subjecting the moistened particle laden air stream to centrifugal force to separate the moistened particles from the air stream and thence separating the water from the particles and finally
4267964 Centrifugal separator with rotating pick-up tube May 19, 1981
A centrifugal separator and pitot pump has a rotatable hollow casing for separating contaminants such as suspended solids from an inlet fluid delivered to the interior of the casing. Inside the casing a stationary inner pitot tube has an outlet opening relatively nearer the rotational
4264285 Downhole cleaner assembly for cleansing lubricant of downhole turbo-machines within wells April 28, 1981
While in a well, a downhole turbo-machine of a series of turbine stages and pump stages is driven by power fluid circulated into the turbine stages from the surface. A branch stream from the power fluid passes through a centrifugal cleaner and is cleansed of solid material. The turbine s
4264269 Centrifugal pitot pump with improved pitot April 28, 1981
A centrifugal separator and pitot pump has a rotor driven in rotation within a casing with fluid to be cleansed of solid material entering a separation chamber of the rotor. Under a rotor imposed, centrifugal force field, solids in the fluid separate from the fluid and exit in a liquid
4262226 Insulating fluid system for protecting submersible electric motors from surrounding fluids April 14, 1981
A method and apparatus are provided for protecting a submersible electric motor from failure due to contamination of the windings of such motor by the fluids surrounding the motor in its submerged environment. A conduit is provided extending from a pressurized source of insulating fluid
4260658 Erosion resistant surface April 7, 1981
An erosion resistant surface is provided for pump components, valves, fluid conduits, diffusion chambers, fluid cleaners, and the like, wherein the surface is exposed to high velocity flow of a fluid containing abrasive particulates. Sharply increased erosion life of such surfaces can be
4259041 High flow standing valve March 31, 1981
The invention provides a high flow rate standing valve for oil wells of the type employing a plurality of check valve units disposed in parallel between inlet and outlet passages, the flow area of the inlet or outlet passage each being not in excess of the total flow areas of the individ
4253524 High flow check valve apparatus March 3, 1981
A check valve apparatus is provided for high volume fluid conduits such as a casing string of an oil well. In order to maximize the fluid delivered from the well, it is essential that the restrictions imposed on the fluid flow path by necessary components in the casing string, such as a
4252499 Centrifugal pump February 24, 1981
A centrifugal pump of the pitot pump type is provided a stationary vane structure containing a pitot tube mounted inside a rotating casing. Fluid is delivered to a pumping chamber within the casing through a plurality of radially extending ducts of at least two disparate radii in the wal
4251184 Centrifugal pump February 17, 1981
A centrifugal pump apparatus is provided for pumping fluids which includes a cylindrical housing rotatable about its central axis and defining a main pumping chamber. A stationary fluid intake passage extends radially outwardly of the central axis of the housing into the main pumping cha
4249860 Pumping apparatus for fluids containing abrasive particulates February 10, 1981
A pump is provided which is specifically designed for the pumping of abrasive particulates, such as a pump employed in the bottom of an oil well. Within a cylindrical housing, one or more pumping stages are provided to pressurize the particulate containing fluid to move the fluid axi
4243528 Treater for mechanically breaking oil and water emulsions of a production fluid from a petroleum January 6, 1981
Production fluid from a well and emulsion breaking chemicals enter a settling vessel where much of the fluid separates into distinct levels by gravity with water at the bottom, an oil-water emulsion above the water, oil-with-emulsion above the emulsion, and gas above the oil-with-emulsio
4237976 Hydraulic well pumping method December 9, 1980
Production tubing extends through a well bore to a well producing formation, and after well fluid stops flowing through the tubing under reservoir pressure, the well fluid is hydraulically pumped to the surface through the existing tubing, which avoids pulling the tubing and replacing
4233154 Method for treating petroleum well pumping power fluid November 11, 1980
A separation compartment of a multiphase separation vessel receives production fluid from a petroleum well and that fluid separates by gravity into the gas, oil and water phases in the vessel. An adjustable siphon leads from a water space in the separation compartment to a discharge
4227865 Constant fluid film thickness hydrostatic thrust bearing October 14, 1980
A method and apparatus are provided for automatically and continuously balancing the unbalanced thrust resulting from the operation of a fluid pump which is driven by a fluid pressure motor. A hydrostatic-type thrust bearing is employed on the common shaft of the fluid pump and motor by
4198218 Gas separation apparatus April 15, 1980
A gas separation apparatus is provided for removing moistened particles from a stream of air by subjecting the moistened particle laden air stream to centrifugal force to separate the moistened particles from the air stream and thence separating the water from the particles and finally
4183713 Pitot pump with jet pump operated thrust balance January 15, 1980
This pitot pump is provided with pressure balancing for minimizing thrust loads on its bearings. The pump has a housing containing a rotatable casing mounted on a shaft. A fixed pitot tube is mounted in the casing for withdrawing pressurized fluid as the casing rotates and discharging th
4161448 Combined separator and pump with dirty phase concentrator July 17, 1979
A pitot pump separates a two-phase fluid from a source into a clean, lighter phase and a dirty, heavier phase by subjecting them to a centrifugal force field in a rotating chamber. A small radius pitot tap of the pump draws some of the lightest phase from the chamber to provide the p
4159036 High pressure cleaning and pumping method and apparatus for oil well production June 26, 1979
High pressure product fluid from a petroleum well goes into a high pressure separation vessel where preliminary phase separation of the constituents takes place. Oil and gas leave the preliminary separator by a flow line. Power fluid for a triplex pump flows from the high pressure separa
4135861 Jet pump with ceramic venturi January 23, 1979
A jet pump has a nozzle for a power fluid, a Venturi for the power fluid and a well fluid, and a passage for the well fluid radially outside the Venturi and into the discharge of the nozzle. The power fluid aspirates the well fluid and the combined stream enters the Venturi. The Venturi
4113452 Gas/liquid separator September 12, 1978
A gas/liquid separator includes a housing and a rotatable degassing chamber in the housing. Liquid containing gas is fed into the housing and through an annular liquid inlet conduit which opens into the chamber. Degasified liquid is discharged from the rotating chamber through one or mor
4103749 Downhole cleaner assembly for petroleum wells August 1, 1978
A centrifugal cleaner powered by a turbine are both downhole in a housing at the end of a drill string. A branch of a drilling mud stream is cleaned of solid matter by the centrifugal cleaner. A branch of the clean fluid drives the turbine of the centrifugal cleaner. A second branch of t
4101246 Vortex jet pump July 18, 1978
A vortex jet pump is provided in which circumferential flow in a fluid flow passage through the pump is induced by a tangential power liquid jet inlet into the passage between its suction inlet and its outlet. The pump, which has no moving parts, has a housing providing a fluid flow pass
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