ARMORED SUBMERSIBLE Power CABLE

The UNICONN™ motor controller can embrace control performance for VSD models akin to target pace, minimum and maximum speed and base pace (voltage divided by frequency); three soar frequencies and bandwidths; volts per hertz sample and start-up enhance; means to start an ESP whereas the motor is spinning; acceleration and deceleration rates, together with begin to minimum pace and minimal to focus on velocity to take care of constant strain/load (e.g., from about 0.01 Hz/10,000 s to about 1 Hz/s); stop mode with PWM service frequency; base pace voltage choice; rocking begin frequency, cycle and sample management; stall safety with automatic speed discount; altering motor rotation direction with out stopping; speed power; velocity follower mode; frequency control to maintain fixed speed, pressure or load; current unbalance; voltage unbalance; overvoltage and undervoltage; ESP backspin; and leg-ground. The SPEEDSTAR™ MVD control circuitry can include a plug-and-play sine wave output filter, a multilevel PWM inverter output, a 0.95 energy issue, programmable load discount (e.g., gentle-stall function), pace management circuitry to take care of fixed load or stress, rocking begin (e.g., for stuck pumps resulting from scale, sand, etc.), a utility power receptacle, an acquisition system for the PHOENIX™ monitoring system, a site communication box to assist surveillance and management service, a velocity control potentiometer.

The SPEEDSTAR™ MVD control circuitry is suitable for indoor or out of doors use and comes normal with a seen fused disconnect change, precharge circuitry, and sine wave output filter (e.g., integral sine wave filter, ISWF) tailor-made for management and protection of excessive-horsepower ESPs. The VSD unit 270 may include surge and lightening protection (e.g., one protection circuit per part). For connection to a power cable or motor lead extensions (MLEs), a motor may embody a pothead. For instance, a motor may include dielectric oil (e.g., or dielectric oils), for instance, which will assist lubricate one or more bearings that help a shaft rotatable by the motor. The electrical windings could also be formed from magnet wire that features an electrical conductor and not less than one polymeric dielectric insulator surrounding the electrical conductor. As to the cable jacket 470, it could also be spherical or as shown in the instance 401, rectangular (e.g., "flat").

For instance, an ESP cable (e.g., ESP energy cable) could also be rated at, for example, about 3 kV, about 4 kV, or about 5 kV (e.g., low voltage armored power cable or extra) and may have a kind factor that is flat or round. As an example, a round form factor cable may be used in an application where there may be adequate room in a bore. As an possibility, nanoscale fillers may be included for low resistivity and appropriate mechanical properties (e.g., for prime temperature thermoplastics). XLPE is a crosslinked polyethylene with acceptable mechanical, thermal, and dielectric properties. For instance, a polymeric insulation layer could embrace a single layer or multiple layers of dielectric tape which may be helically wrapped around an electrical conductor and that could be bonded to the electrical conductor (e.g., and to itself) via use of an adhesive. Further monitoring of power high quality from a supply, to a motor, at a motor, could occur by one or more circuits or features of a controller. In the instance of FIG. 2, the motor controller 250 contains various features to handle, for instance, backspin of an ESP, sanding of an ESP, flux of an ESP and gasoline lock of an ESP.

For instance, a motor housing could embrace slot liners. HDESPs may handle a large number of fluids and, for instance, up to about 2% sand, coal, fines and H2S/CO2. HDESPs discover use in low-liquid-charge coalbed methane and different oil and gasoline shallow wells that profit from artificial lift to take away water from the wellbore. A number of layers could also be supplied, for instance, to create an impermeable gasoline barrier. As an example, the VSD unit 270 may obtain power with a voltage of about 4.16 kV and management a motor as a load with a voltage from about zero V to about 4.16 kV. For a LVD, a VSD unit can embrace a step-up transformer, control circuitry and a step-up transformer while, for a MVD, a VSD unit can embody an built-in transformer and control circuitry. The SPEEDSTAR™ MVD control circuitry can optionally interface with the UNICONN™ motor controller, which can provide among the foregoing functionality. Such a motor could also be appropriate for implementation in various kinds of environments. A motor could also be configured to incorporate an oil reservoir, for instance, in a base portion of a motor housing, which can enable oil to expand and contract with huge thermal cycles.