The COSCO down hole sensor system is designed for the following specified well conditions:

  • Maximum down hole well temperature of 120 deg. C.
  • Maximum bottom hole pressure of 5000 PSI.
  • Oil Properties:
    -No Carbon Dioxide
    -No Hydrogen Sulfide

The DHT sensor tool is designed for the following measurements:

  • Pump Intake (wellbore) Pressure (+/- 0.25%)
  • Pump Intake (wellbore) Temperature (+/- 2 degrees C.)
  • Motor Oil (or winding) Temperature (+/- 2 degrees C.)

Tool Top Connection: 3 ½” EUE pin. (or motor flange)
Tool Bottom Connection: 2 3/8” EUE box (motor guide connection)
Material: Housings: 1028 Carbon steel, Bulkheads: 4130 Carbon steel.
O-ring material: Aflas
Length: 34.5 inches
Diameter: Maximum diameter 4.00 inches
Weight: 57 lbs. net

The choke panel is a NEMA 3R enclosure, painted white and can be mounted on the side of the switchboard or step-up transformer (where applicable). The panel houses:

1. The choke, designed to isolate the high voltage from the low voltage DC signal.
2. High voltage current transformers (VSD applications only).
3. Backspin probes (where applicable).

The COSCO surface interface panel consists of an RTU that can be mounted in the switchboard if required. The surface interface panel performs the following functions:

1. Provides the power supply for the down hole sensor electronics. This DC voltage is transmitted along the main ESP power cable to the sensor.
2. Reads and processes the data signal that is transmitted from the down hole sensor.
3. Communicates to a motor controller or a data logger using the MODBUS Protocol. The motor controller regularly polls the surface interface RTU for the down hole tool readings.

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