Abstract: An electric submersible pump (ESP) assembly. The ESP assembly comprises a first ESP component having a first drive shaft defining a plurality of male splines and defining at least one cut-out area; a second ESP component having a second drive shaft defining a plurality of male splines; a coupling shell defining a first plurality of female splines configured to mate with the male splines of the first drive shaft, a second plurality of female splines configured to mate with the male splines of the second drive shafts, and at least one shouldered aperture configured to align with the cut-out area of the first drive shaft; and at least one removable lug having a pin that is configured to extend through the shouldered aperture in the coupling shell to engage with the at least one cut-out area of the first drive shaft.

Abstract: An electric submersible pump (ESP) assembly. The ESP assembly comprises a first ESP component having a first drive shaft defining a plurality of male splines and defining at least one cut-out area; a second ESP component having a second drive shaft defining a plurality of male splines; a coupling shell defining a first plurality of female splines configured to mate with the male splines of the first drive shaft, a second plurality of female splines configured to mate with the male splines of the second drive shafts, and at least one shouldered aperture configured to align with the cut-out area of the first drive shaft; and at least one removable lug having a pin that is configured to extend through the shouldered aperture in the coupling shell to engage with the at least one cut-out area of the first drive shaft.

Abstract: An electric submersible pump (ESP) assembly comprising an electric motor, a seal section disposed uphole of the electric motor, a gas separator disposed uphole of the seal section, a downhole transmission assembly disposed uphole of the gas separator, comprising a flow passage fluidically coupled to a liquid phase discharge port of the gas separator, a first drive shaft coupled to a drive shaft of the gas separator, a second drive shaft, and a transmission that mechanically couples the first drive shaft to the second drive shaft, wherein the transmission is configured to turn the second drive shaft at a slower angular speed than the angular speed of the first drive shaft, and a centrifugal pump assembly disposed uphole of the downhole transmission assembly, having a fluid inlet coupled to a fluid outlet of the downhole transmission assembly, and having a drive shaft coupled to the second drive shaft.

Abstract: An electric submersible pump (ESP) assembly. The ESP assembly comprises having an electric motor a stator, a rotor, and a first drive shaft, wherein the rotor is coupled to the first drive shaft; a seal section having a second drive shaft coupled to the first drive shaft; a pump assembly having a third drive shaft coupled to the second drive shaft; and an angular position instrument that is configured to determine an angular position of the rotor and to transmit an indication of the angular position of the rotor to an electric motor controller.

Abstract: An electric submersible pump (ESP) assembly. The ESP assembly comprises an electric motor; a seal section coupled to the electric motor; a fluid intake coupled to an uphole end of the seal section, wherein the fluid intake defines a plurality of inlet ports; a gas separator comprising a plurality of gas phase discharge ports, and at least one liquid phase discharge port, wherein the gas separator is located uphole of the fluid intake; a centrifugal pump comprising a fluid inlet at a downhole end, wherein the at least one liquid phase discharge port of the gas separator is fluidically coupled to the fluid inlet of the centrifugal pump; and an inverted shroud assembly, wherein a downhole end of the inverted shroud assembly is coupled to an outside of the gas separator downhole of the gas phase discharge ports of the gas separator and uphole of the fluid intake.

Abstract: A downhole gas separator fluid mover assembly comprising a fluid mover having an inlet and an outlet, a separation device, a separation chamber, and a flow path separator located downstream of the fluid mover. The fluid mover comprising a centrifugal pump stage with an impeller and a diffuser moves production fluid comprising a high viscosity fluid portion and a gas portion to the separation device. The separation device produces a fluid motion that separates the gas phase from the liquid phase in response to the flow rate of production fluid from the fluid mover. A portion of the high viscosity fluid passes through the gas phase discharge port in response to the over-supply of high viscosity fluid to the liquid discharge port in response to the flow rate of the production fluid through the fluid mover.

Abstract: An electric submersible pump (ESP) assembly. The ESP assembly comprises an electric motor; a seal section coupled to an uphole end of the electric motor; a fluid intake coupled to an uphole end of the seal section, wherein the fluid intake defines a plurality of inlet ports; a gas separator coupled to an uphole end of the fluid intake, wherein the gas separator has a plurality of gas phase discharge ports; a pump assembly coupled to an uphole end of the gas separator; and an intake extension tubular, wherein an uphole end of the intake extension tubular is coupled to the fluid intake uphole of the inlet ports, and wherein an annulus defined between an inside of the intake extension tubular and an outside of the seal section defines a fluid flow path from a downhole end of the intake extension tubular to the inlet ports of the fluid intake.

Abstract: An electric submersible pump (ESP) assembly. The ESP assembly comprises a centrifugal pump assembly comprising a plurality of pump stages, wherein each pump stage comprises a diffuser and an impeller, wherein the impeller comprises a plurality of impeller vanes, wherein each impeller vane comprises an impeller vane trailing edge that attaches to a shroud of the impeller at a location downstream of a location where the impeller vane trailing edge attaches to a hub of the impeller, and wherein the diffuser comprises a plurality of diffuser vanes, wherein each diffuser vane comprises a diffuser vane leading edge that attaches to a shroud of the diffuser at a location downstream of a location where the diffuser vane leading edge attaches to a hub of the diffuser.

Abstract: An electric submersible pump includes a shaft, a motor mechanically coupled to the shaft, and an impeller rotationally coupled to the shaft. The impeller includes a first hub and a first shroud. The first shroud is concentrically disposed about the first hub and has a first axial end and a second axial end. The second axial end is disposed radially outward with respect to the first axial end. A slope of an interior surface of the first shroud proximate the second axial end is within 20 degrees of being parallel to a longitudinal axis of the shaft. The impeller further includes first vanes extending from the first hub to the first shroud. The electric submersible pump further includes a diffuser fluidly coupled to the impeller. The diffuser includes a second hub, a second shroud concentrically disposed about the second hub, and second vanes extending from the second hub to the second shroud.

Abstract: Provided, in one aspect, is a spin control valve assembly, comprising a stationary valve plate having a first stationary valve plate opening and a second stationary valve plate opening; and a rotating valve plate coupled longitudinally adjacent to the stationary valve plate, the rotating valve plate having a rotating valve plate opening, wherein the rotating valve plate is configured to rotate among at least three positions such that at each position of the at least three positions fluid flows at a different flow rate through the spin control valve assembly.

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: An electric submersible pump (ESP) assembly. The ESP assembly comprises an electric motor; a seal section coupled to the electric motor; a fluid intake coupled to an uphole end of the seal section, wherein the fluid intake defines a plurality of inlet ports; a gas separator comprising a plurality of gas phase discharge ports, and at least one liquid phase discharge port, wherein the gas separator is located uphole of the fluid intake; a centrifugal pump comprising a fluid inlet at a downhole end, wherein the at least one liquid phase discharge port of the gas separator is fluidically coupled to the fluid inlet of the centrifugal pump; and an inverted shroud assembly, wherein a downhole end of the inverted shroud assembly is coupled to an outside of the gas separator downhole of the gas phase discharge ports of the gas separator and uphole of the fluid intake.

Abstract: A downhole gas separator fluid mover assembly comprising a fluid mover having an inlet and an outlet, a separation device, a separation chamber, and a flow path separator located downstream of the fluid mover. The fluid mover comprising a centrifugal pump stage with an impeller and a diffuser moves production fluid comprising a high viscosity fluid portion and a gas portion to the separation device. The separation device produces a fluid motion that separates the gas phase from the liquid phase in response to the flow rate of production fluid from the fluid mover. A portion of the high viscosity fluid passes through the gas phase discharge port in response to the over-supply of high viscosity fluid to the liquid discharge port in response to the flow rate of the production fluid through the fluid mover.

Abstract: A downhole integral gas separator and pump assembly, The assembly comprises a drive shaft; a separation chamber concentrically disposed around the drive shaft; a gas flow path and liquid flow path separator having a gas phase discharge port open to an exterior of the assembly, and having a liquid phase discharge port; a fluid mover mechanically coupled to the drive shaft having an inlet fluidically coupled to the liquid phase discharge port of the gas flow path and liquid flow path separator, and having an outlet; a housing that retains the drive shaft, the gas flow path and liquid flow path separator, and the fluid mover; and a pump discharge coupled to a downstream end of the housing, wherein the pump discharge is fluidically coupled to the outlet of the fluid mover and is configured to connect to a production tubing.

Abstract: A wellbore environment including a downhole tool coupled with a conveyance and operable to be disposed within a wellbore, at least one strain measurement devices coupled with a surface of the downhole tool; and a control facility communicatively coupled with the at least one strain measurement device.

Abstract: A fluid flow rate sensor. The fluid flow rate sensor comprises an elongated structure; a heating element installed into a first end of the elongated structure; a first temperature transducer coupled to an outside of the elongated structure at a first predefined location; a second temperature transducer coupled to the outside of the elongated structure at a second predefined location; and a control unit that is configured to turn the heating element on and off, to analyze a first temperature indication received from the first temperature transducer, to analyze a second temperature indication received from the second temperature transducer, to determine a flow rate of a fluid that is in intimate contact with the outside of the elongated structure based on analyzing the first temperature indication and the second temperature indication, and to output the flow rate via a communication line.

Abstract: An electrical submersible pump (ESP) assembly. The ESP assembly comprises an electric motor having a first drive shaft; a seal section having a second drive shaft that is coupled to the first drive shaft; a third drive shaft that is coupled to the second drive shaft; and an axial flow centrifugal pump stage, wherein the centrifugal pump stage comprises an impeller coupled to the third drive shaft and a diffuser, wherein the impeller defines a plurality of impeller vanes attached between an impeller hub and an impeller shroud, wherein the impeller shroud is a straight-walled cylindrical shape, wherein the diffuser defines a plurality of diffuser vanes attached between a diffuser hub and a diffuser shroud, and wherein the diffuser shroud is a straight-walled cylindrical shape.

Abstract: Methods and systems for producing hydrocarbons. An example method includes producing a non-hydrocarbon liquid from a first horizontal wellbore, the first horizontal wellbore extending from a vertical wellbore and through a hydrocarbon producing formation. The method further includes pumping the non-hydrocarbon liquid with a first pump into a second horizontal wellbore, the second horizontal wellbore extending from the vertical wellbore and disposed downhole and underneath the first horizontal wellbore. The method additionally includes pumping a hydrocarbon liquid uphole to a surface with a second pump disposed downhole of the first horizontal wellbore.

Abstract: A submersible pump assembly. The submersible pump assembly comprises a motor comprising a first drive shaft; a seal section comprising a second drive shaft that is coupled to the first drive shaft of the motor; and a centrifugal pump assembly comprising a third drive shaft that is coupled to the second drive shaft of the seal section and a plurality of pump stages, wherein each pump stage comprises an impeller coupled to the third drive shaft and a diffuser retained by a housing of the centrifugal pump assembly, wherein the diffuser of each pump stage comprises a first plurality of vanes each having a first axial length and a second plurality of vanes each disposed between a pair of vanes of the first plurality of vanes and each having a second axial length, wherein the second axial length is less than the first axial length.

Abstract: An electric submersible pump (ESP) assembly comprising an electric motor, a seal section disposed uphole of the electric motor, a gas separator disposed uphole of the seal section, a downhole transmission assembly disposed uphole of the gas separator, comprising a flow passage fluidically coupled to a liquid phase discharge port of the gas separator, a first drive shaft coupled to a drive shaft of the gas separator, a second drive shaft, and a transmission that mechanically couples the first drive shaft to the second drive shaft, wherein the transmission is configured to turn the second drive shaft at a slower angular speed than the angular speed of the first drive shaft, and a centrifugal pump assembly disposed uphole of the downhole transmission assembly, having a fluid inlet coupled to a fluid outlet of the downhole transmission assembly, and having a drive shaft coupled to the second drive shaft.