Abstract: A pump system for pumping production fluids from a wellbore or pumping well treatment fluids into a wellbore comprising: an axial flux electric motor; a seal section coupled to the axial flux motor; a pump intake coupled to the seal section; a pump coupled to the pump intake, and a fluid discharge coupled to the pump. The torque capacity axial flux motor may be modified without removing the axial flux motor from the pump.

Abstract: A pump system for pumping production fluids from a wellbore or pumping well treatment fluids into a wellbore comprising: an axial flux electric motor; a seal section coupled to the axial flux motor; a pump intake coupled to the seal section; a pump coupled to the pump intake, and a fluid discharge coupled to the pump. The torque capacity axial flux motor may be modified without removing the axial flux motor from the pump.

Abstract: A downhole electric submersible pump (ESP) assembly. The downhole ESP assembly comprises a permanent magnet motor (PMM) comprising a first drive shaft, a stator, and a rotor disposed within the stator and comprising a core coupled to the first drive shaft, wherein the core retains a first permanent magnet element within a first magnet pocket defined by the core that extends axially parallel to the first drive shaft and retains a second permanent magnet element within a second magnet pocket defined by the core that extends axially parallel to the first drive shaft; a seal section having a second drive shaft coupled to the first drive shaft; and a pump assembly having a third drive shaft coupled to the second drive shaft.

Abstract: A downhole electric submersible pump (ESP) assembly. The downhole ESP assembly comprises a hybrid permanent magnet motor (PMM) comprising a first drive shaft, a stator, and a rotor comprising a first permanent magnet element, a second permanent magnet element, and an induction squirrel cage, wherein the rotor is mechanically coupled to the first drive shaft and disposed within the stator; a seal section having a second drive shaft coupled to the first drive shaft; and a pump assembly having a third drive shaft coupled to the second drive shaft.

Abstract: In artificial lift production systems, a reduction in pressure and temperature as production fluids migrate to the surface can cause a buildup in the production tubing that reduces or stops production. To remove buildup, an ESP can be operated at low efficiency and low flow operating conditions to generate heat in the pump. The heat increases the temperature of the production fluid in the pump. When the heated production fluid is transported to the surface, the fluid increases the temperature of the production tubing resulting in a melting of the solidified wax blocking the production tubing. As the wax melts, the production fluid carries it toward the surface. Over time, the heated production fluid will melt enough solidified wax to open the production tubing to a full flow capacity, thus allowing standard production operation to continue.

Abstract: An electric submersible pump (ESP) assembly. The ESP assembly comprises a centrifugal pump, an electric motor mechanically coupled by a drive shaft to the centrifugal pump, wherein the electric motor comprises a stator and a rotor, a bearing, wherein the bearing is disposed inside the electric motor, and a magnetic shield disposed in the electric motor between bearing and the rotor and stator.

Abstract: Methods to improve fluid flow of a multi-phase mixture, methods to separate fluids of a multi-phase mixture, and downhole multi-phase fluid mixture systems are disclosed. A method to improve fluid flow of a multi-phase mixture includes positioning a first acoustic device and a second acoustic device around a conveyance that provides a fluid flow path for a first fluid in a first phase and a second fluid in a second phase to simultaneously flow through the conveyance. The method also includes determining a flow rate and a fluid condition of the fluid mixture. The method further includes generating a standing acoustic wave through the conveyance based on the flow rate and the fluid condition to break down the first fluid into droplets having volume within a threshold volume.

Abstract: An electric submersible pump (ESP) electric motor. The ESP electric motor comprises a housing; a stator retained within the housing; a drive shaft; and an at least one rotor mechanically coupled to the drive shaft and located concentric with and inside of the stator, wherein an inside surface of the stator defines a groove extending from an upper end to a lower end of the stator, an outside surface of the at least one rotor defines a groove extending from an upper end to a lower end of the at least one rotor, an inside surface of the at least one rotor defines a groove extending from an upper end to a lower end of the at least one rotor, or an outside surface of the drive shaft defines a groove extending from below an male splines at an upper end to a lower end of the drive shaft.

Abstract: An electric submersible pump (ESP) electric motor. The ESP electric motor comprises a housing; a stator retained within the housing; a drive shaft; and an at least one rotor mechanically coupled to the drive shaft and located concentric with and inside of the stator, wherein an inside surface of the stator defines a groove extending from an upper end to a lower end of the stator, an outside surface of the at least one rotor defines a groove extending from an upper end to a lower end of the at least one rotor, an inside surface of the at least one rotor defines a groove extending from an upper end to a lower end of the at least one rotor, or an outside surface of the drive shaft defines a groove extending from below an male splines at an upper end to a lower end of the drive shaft.

Abstract: An electric submersible pump used to pump fluids inside a borehole during operation is described. The electric submersible pump and its motor can be powered using an inductive power coupling. The electric submersible pump comprises a sealed extension that houses a pickup inductive coil assembly that is electrically coupled to a power source at a surface of the borehole. Power runs through the primary inductive coil assembly and the primary inductive coil is positioned relative to the pickup inductive coil assembly such that the electrical current flowing in the primary inductive coil assembly from the power source and through the power cable induces a voltage in the pickup inductive coil assembly.

Abstract: This disclosure presents a dimensionless relationship between a fluid flow rate, a viscosity, and a brake horsepower (BHP) in a pump operation and a method that uses the dimensionless relationship to predict a BHP for viscous performance of a pump from water performance specifications. Using the dimensionless relationship, i.e., K-R number, the methods determine a BHP correlation that allows the prediction of the BHP specification to satisfy a pump performance metric at any given speed, flow rate, and viscosity. This prediction can be calculated from water performance specifications without physically testing the pump in the viscous implementation environment.

Abstract: Methods to improve fluid flow of a multi-phase mixture, methods to separate fluids of a multi-phase mixture, and downhole multi-phase fluid mixture systems are disclosed. A method to improve fluid flow of a multi-phase mixture includes positioning a first acoustic device and a second acoustic device around a conveyance that provides a fluid flow path for a first fluid in a first phase and a second fluid in a second phase to simultaneously flow through the conveyance. The method also includes determining a flow rate and a fluid condition of the fluid mixture. The method further includes generating a standing acoustic wave through the conveyance based on the flow rate and the fluid condition to break down the first fluid into droplets having volume within a threshold volume.

Abstract: Methods to improve fluid flow of a multi-phase mixture, methods to separate fluids of a multi-phase mixture, and downhole multi-phase fluid mixture systems are disclosed. A method to improve fluid flow of a multi-phase mixture includes positioning a first acoustic device and a second acoustic device around a conveyance that provides a fluid flow path for a first fluid in a first phase and a second fluid in a second phase to simultaneously flow through the conveyance. The method also includes determining a flow rate and a fluid condition of the fluid mixture. The method further includes generating a standing acoustic wave through the conveyance based on the flow rate and the fluid condition to break down the first fluid into droplets having volume within a threshold volume.

Abstract: A pump system for pumping production fluids from a wellbore or pumping well treatment fluids into a wellbore comprising: an axial flux electric motor; a seal section coupled to the axial flux motor; a pump intake coupled to the seal section; a pump coupled to the pump intake, and a fluid discharge coupled to the pump. The torque capacity axial flux motor may be modified without removing the axial flux motor from the pump.

Abstract: A pump system for pumping production fluids from a wellbore or pumping well treatment fluids into a wellbore comprising: an axial flux electric motor; a seal section coupled to the axial flux motor; a pump intake coupled to the seal section; a pump coupled to the pump intake, and a fluid discharge coupled to the pump. The torque capacity axial flux motor may be modified without removing the axial flux motor from the pump.

Abstract: A pump system for pumping production fluids from a wellbore or pumping well treatment fluids into a wellbore comprising: an axial flux electric motor; a seal section coupled to the axial flux motor; a pump intake coupled to the seal section; a pump coupled to the pump intake, and a fluid discharge coupled to the pump. The torque capacity axial flux motor may be modified without removing the axial flux motor from the pump.

Abstract: A pump system for pumping production fluids from a wellbore or pumping well treatment fluids into a wellbore comprising: an axial flux electric motor; a seal section coupled to the axial flux motor; a pump intake coupled to the seal section; a pump coupled to the pump intake, and a fluid discharge coupled to the pump. The torque capacity axial flux motor may be modified without removing the axial flux motor from the pump.

Abstract: A pump system for pumping production fluids from a wellbore or pumping well treatment fluids into a wellbore comprising: an axial flux electric motor; a seal section coupled to the axial flux motor; a pump intake coupled to the seal section; a pump coupled to the pump intake, and a fluid discharge coupled to the pump. The torque capacity axial flux motor may be modified without removing the axial flux motor from the pump.

Abstract: This disclosure presents a dimensionless relationship between a fluid flow rate, a viscosity, and a brake horsepower (BHP) in a pump operation and a method that uses the dimensionless relationship to predict a BHP for viscous performance of a pump from water performance specifications. Using the dimensionless relationship, i.e., K-R number, the methods determine a BHP correlation that allows the prediction of the BHP specification to satisfy a pump performance metric at any given speed, flow rate, and viscosity. This prediction can be calculated from water performance specifications without physically testing the pump in the viscous implementation environment.

Abstract: An electric submersible pump used to pump fluids inside a borehole during operation is described. The electric submersible pump and its motor can be powered using an inductive power coupling. The electric submersible pump comprises a sealed extension that houses a pickup inductive coil assembly that is electrically coupled to a power source at a surface of the borehole. Power runs through the primary inductive coil assembly and the primary inductive coil is positioned relative to the pickup inductive coil assembly such that the electrical current flowing in the primary inductive coil assembly from the power source and through the power cable induces a voltage in the pickup inductive coil assembly.