Disclosed is an apparatus According to the present invention, a new winding arrangement was developed to enhance the manufacturability of stators with large length to diameter ratio and small aperture diameters such as the ones designed and manufactured for downhole pumping applications. The rectangular conductors are pre-formed to a specific shape, nested together, and inserted into the stator slots. Once the conductors are inserted, additional bending and joining operations are required to complete the coils and phases. These operations can be either fully automatic or semi-automatic. The structure of the winding allows insertion of phase and phase to phase insulation after the joining operation is completed thus reducing the risk of damage to the insulation system during the joining process. The pre-formed winding due to its ability to nest by design results is very short end-turns compared to conventional winding.
Disclosed is an apparatus According to the present invention, a new winding arrangement was developed to enhance the manufacturability of stators with large length to diameter ratio and small aperture diameters such as the ones designed and manufactured for downhole pumping applications. The rectangular conductors are pre-formed to a specific shape, nested together, and inserted into the stator slots. Once the conductors are inserted, additional bending and joining operations are required to complete the coils and phases. These operations can be either fully automatic or semi-automatic. The structure of the winding allows insertion of phase and phase to phase insulation after the joining operation is completed thus reducing the risk of damage to the insulation system during the joining process. The pre-formed winding due to its ability to nest by design results is very short end-turns compared to conventional winding.
H02K 3/12 - Windings characterised by the conductor shape, form or construction, e.g. with bar conductors arranged in slots
H02K 15/00 - Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
H02K 15/06 - Embedding prefabricated windings in the machines
H02K 3/28 - Layout of windings or of connections between windings
H02K 3/38 - Windings characterised by the shape, form or construction of the insulation around winding heads, equalising connectors, or connections thereto
3.
Shaft seal protector for electrical submersible pumps
Disclosed is an apparatus when installed with an Electrical Submersible Pump for fluid production protects the motor from the effect of solids on the shaft seal. The invention provides an apparatus that dynamically filters the solids and prevents them from contacting or accumulating at the vicinity of the shaft seal. The apparatus extends the run life of the ESP and prevents the motor dielectric fluid from being contaminated.
E21B 43/38 - Arrangements for separating materials produced by the well in the well
E21B 43/12 - Methods or apparatus for controlling the flow of the obtained fluid to or in wells
F04D 13/10 - Units comprising pumps and their driving means the pump being electrically driven for submerged use adapted for use in mining bore holes
F04B 47/06 - Pumps or pumping installations specially adapted for raising fluids from great depths, e.g. well pumps having motor-pump units situated at great depth
F04D 13/08 - Units comprising pumps and their driving means the pump being electrically driven for submerged use
4.
SHAFT SEAL PROTECTOR FOR ELECTRICAL SUBMERSIBLE PUMPS
Disclosed is an apparatus when installed with an Electrical Submersible Pump (5) for fluid production protects the motor (10) from the effect of solids on the shaft seal (140). The invention provides an apparatus that dynamically filters the solids and prevents them from contacting or accumulating at the vicinity of the shaft seal (140). The apparatus extends the run life of the ESP (5) and prevents the motor dielectric fluid from being contaminated.
An electric submersible pump system comprises an electric submersible pump body (50) having a first mating profile (53), an electric submersible pump motor (54) having a second mating profile (55), and an electrical wet connect point (61) at the top of the electric submersible pump. The electric submersible pump body (50) has a first mating drive shaft, and the electric submersible pump motor (54) has a second mating drive shaft, such that first and second mating drive shafts engage and can transmit torque from one drive shaft to the other.
A separator for reducing or eliminating the amount of suspending solids from a reservoir fluid of a downhole motor having a rotating seal. The cleaned fluid circulated past the seal and outermost bearing, the separator having a vortex, rotating cyclone or centrifuge, at least one inlet at least one outlet for cleaned fluid, at least one outlet for solid material, water, particulates or similar material separated from the cleaned fluid. The outlet for the clean fluid may include a porous filter.
F04C 2/16 - Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons with helical teeth, e.g. chevron-shaped, screw type
F04C 2/18 - Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons with similar tooth forms
A wet connection system suitable for use in hydrocarbon wells is formed from one or more elongated, small diameter conduits which extend down the wellbore and which terminate adjacent a locating structure on the production tubing. Equipment deployed at the locating structure is connected to one or more self supporting conductors which extend down the conduits from the wellhead. Preferably the conductors are retractable and the conduits are sealingly connected to the equipment, allowing the equipment and conductors to be deployed and recovered independently of each other and to be flushed with dielectric oil pumped down the conduits after re-connection.
An electric submersible progressive cavity pump assembly is disclosed, which includes an electric motor, a progressive cavity pump, a transmission rotatable by the motor, and a torque isolator coupled between the transmission and the progressive cavity pump, where the torque isolator includes resilient members which accommodate sudden changes in torque.
E21B 43/12 - Methods or apparatus for controlling the flow of the obtained fluid to or in wells
F04C 13/00 - Adaptations of machines or pumps for special use, e.g. for extremely high pressures
F04C 2/107 - Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member with helical teeth
A stator has a field winding, the winding comprising a plurality of axial conductors connected at their ends to form at least one circuit with a number of turns. Each axial conductor is disposed within a tubular axial insulation member, the tubular axial insulation members being disposed within a stack of laminations. The axial conductors and the tubular insulation members are radially distributed at equal angles. The position of the axial conductors and the tubular insulation members is predetermined.
H02K 3/34 - Windings characterised by the shape, form or construction of the insulation between conductors or between conductor and core, e.g. slot insulation
H02K 3/38 - Windings characterised by the shape, form or construction of the insulation around winding heads, equalising connectors, or connections thereto
H02K 1/04 - Details of the magnetic circuit characterised by the material used for insulating the magnetic circuit or parts thereof
10.
Line start permanent magnet motor using a modular rotor
A rotor system for a downhole motor includes at least one permanent magnet rotor section, and at least one squirrel cage rotor section. The permanent magnet rotor section and the squirrel cage rotor section are joined in series by a connection. In one example the connection includes a male self lock taper on one rotor, and a corresponding female self lock taper on the other rotor.
H02K 21/46 - Motors having additional short-circuited winding for starting as an asynchronous motor
H02K 21/14 - Synchronous motors having permanent magnetsSynchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating within the armatures
H02K 7/00 - Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
H02K 7/20 - Structural association with auxiliary dynamo-electric machines, e.g. with electric starter motors or exciters
H02K 16/00 - Machines with more than one rotor or stator
H02K 17/16 - Asynchronous induction motors having rotors with internally short-circuited windings, e.g. cage rotors
A downhole electric submersible pump, with at least one pump unit having a pump inlet, and an electric motor system to power the pump, the electric motor system comprising an induction motor and permanent magnet motor. The induction motor and permanent magnet motor share a common power supply, connected in series.
A rotor system for a downhole motor comprises a set of permanent magnets, a set of conductors and a pair of end conductor rings connecting the set of conductors. The set of permanent magnets and the set of conductors being substantially coaxial and having the substantially the same linear extent. The set of permanent magnets can be located radially inwards from the set of conductors, and may be provided by discrete conductive bars.
H02K 7/00 - Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
H02K 17/16 - Asynchronous induction motors having rotors with internally short-circuited windings, e.g. cage rotors
A motor transmission and gearbox for downhole use, comprises, a first motor driving a first input shaft, a second motor driving a second input shaft, a gearbox comprising at least, a ring gear, a sun gear, and, a planetary gear and planetary carrier. The first input shaft drives either the ring gear, the sun gear or the planetary gear and/or planetary carrier, the second input shaft drives one of the gears not driven by the first input shaft, and the remaining gear driving the output shaft.
F16H 3/72 - Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion using gears having orbital motion with a secondary drive, e.g. regulating motor, in order to vary speed continuously
F16H 25/22 - Screw mechanisms with balls, rollers, or similar members between the co-operating partsElements essential to the use of such members
E21B 43/12 - Methods or apparatus for controlling the flow of the obtained fluid to or in wells
F04B 47/06 - Pumps or pumping installations specially adapted for raising fluids from great depths, e.g. well pumps having motor-pump units situated at great depth
F16H 37/14 - Gearings comprising primarily toothed or friction gearing, links or levers, and cams, or members of at least two of these three types the movements of two or more independently-moving members being combined into a single movement
A stator has a field winding, the winding comprising a plurality of axial conductors connected at their ends to form at least one circuit with a number of turns. Each axial conductor, or set of axial conductors having a common voltage, is disposed within an insulated channel member, the insulated channel member being disposed within a stack of laminations. The axial conductors and the tubular insulation members are radially distributed at equal angles.
A rotor system for a downhole motor comprises a set of permanent magnets, a set of conductors and a pair of end conductor rings connecting the set of conductors. The set of permanent magnets and the set of conductors being substantially coaxial and having the substantially the same linear extent. The set of permanent magnets can be located radially inwards from the set of conductors, and may be provided by discrete conductive bars
H02K 17/16 - Asynchronous induction motors having rotors with internally short-circuited windings, e.g. cage rotors
H02K 7/00 - Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
A downhole electric submersible pump, comprises at least one pump unit having a pump inlet, and an electric motor system to power the pump, the electric motor system comprising an induction motor and permanent magnet motor. The induction motor and permanent magnet motor share a common power supply, connected in series.
A stator has a field winding, the winding comprising a plurality of axial conductors connected at their ends to form at least one circuit with a number of turns. Each axial conductor is disposed within a tubular axial insulation member, the tubular axial insulation members being disposed within a stack of laminations. The axial conductors and the tubular insulation members are radially distributed at equal angles. The position of the axial conductors and the tubular insulation members is predetermined.
H02K 3/34 - Windings characterised by the shape, form or construction of the insulation between conductors or between conductor and core, e.g. slot insulation
H02K 3/38 - Windings characterised by the shape, form or construction of the insulation around winding heads, equalising connectors, or connections thereto
18.
LINE START PERMANENT MAGNET MOTOR USING A MODULAR ROTOR
A rotor system for a downhole motor comprises at least one permanent magnet rotor section, and at least one squirrel cage rotor section. The permanent magnet rotor section and the squirrel cage rotor section are joined in series by a connection. Ideally, the connection comprises a male self lock taper on one rotor, and a corresponding female self lock taper on the other rotor.
H02K 21/46 - Motors having additional short-circuited winding for starting as an asynchronous motor
H02K 7/20 - Structural association with auxiliary dynamo-electric machines, e.g. with electric starter motors or exciters
H02K 16/00 - Machines with more than one rotor or stator
H02K 7/00 - Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
H02K 17/16 - Asynchronous induction motors having rotors with internally short-circuited windings, e.g. cage rotors
H02K 21/14 - Synchronous motors having permanent magnetsSynchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating within the armatures
patents
