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ScadaPOC

ScadaPOCScadaPOC

The Automation & Electronics ScadaPOC provides control for sucker rod pumps, minimizing operating costs while maximizing production.

The ScadaPOC's primary purpose is to be a Pump-Off Controller (POC.) The ScadaPOC detects when the pump is not completely filled and switches to an idle mode for a short time to allow the well to recharge.

A rod pump that is continuously operated when only partially filled with fluid will suffer many more failures without producing that much more fluid than a pump that is idled when not full. By idling wells that are pumped off, oil producers save not only electricity, but excessive wear and tear on the rod string, tubing, pump, gearbox and motor while maintaining production from the well at the same time. By reducing the number of pumping equipment failures the ScadaPOC also reduces the occurrences of down time and lost production suffered by the field.

The ScadaPOC combines the advantages of our history with the Automation & Electronics AEPOC with a new and upgraded hardware platform to bring consistent and reliable pump off detection to your field.

ScadaPOC acquired surface cardSurface Card

The ScadaPOC detects pump off by measuring polished rod load and position data as the pump moves through its stroke, generating a dynamometer card. This dynamometer card changes when the well pumps off. The ScadaPOC and its predecessor the
AEPOC have detected these changes in the dynamometer cards for controlling thousands of wells with different pumping unit types, rod string designs, depths, completions, water cuts, oil viscosities, and other well variations.

Storing event dynamometer card and historical data the ScadaPOC also gives the field the diagnostic tools needed to determine the real source of failures. This allows fields to reduce the repeated failures that cause a drag on operating budgets and reduce production.

Well siteRod pump control site

As part of a Supervisory Control And Data Acquisition (SCADA) system, the ScadaPOC reports problems quickly, and in all sorts of weather. The field knows as soon as possible what happened, when it happened, and may allow the unit to be restarted remotely. Telemetry capabilities also allow the field to easily gather accurate field data. This gives managers and engineers the tools they need to determine where to spend company resources.

Depending on depth, a ScadaPOC can pay for itself by saving just one rod string failure. Think of how much can be saved over the life of the well. This is how oil companies return the most value to the lease owners, partners and shareholders during the times when oil prices are high. This is also how oil companies survive when oil prices fall.

Accurate and Reliable Load and Position Data for Consistent Operation

The ScadaPOC gets consistent and reliable operations from a variety of load and position transducers. It is able to control wells at any depth with a flexible pump off detection algorithm proven in thousands of installations.

  • The ScadaPOC uses a 16-bit, wide dynamic range, differential voltage input for measuring loads from a variety of bridge type transducers.
    • A variety of load cells have been pre-programmed into the ScadaPOC, new load cell parameters can also be entered.
    • Beam mounted strain gauge signals are handled by the wide dynamic range of the load input and drift compensation algorithm.
  • The ScadaPOC uses a 16-bit analog input for measuring polished rod position from a variety of different position transducers including potentiometers, inclinometers, and switches.
    • For position inclinometers, the ScadaPOC firmware can compensate for drift, noise, and delay from internal signal filtering.
    • For position switches, the ScadaPOC can fill in from standard pumping unit position profiles, or from a base stroke where the position is measured using a temporary potentiometer. The position switch to top of stroke timing can easily and accurately set by comparing switch and continuously measured dynamometer cards.

Ruggedized Components for Oil Field Installations

The ScadaPOC is engineered, built, and tested for use in extreme oil field environments.

  • Designed to comply with NEC and NFPA electrical code requirements. UL Listed enclosure, circuit protection and power supply components.
  • NEMA 4 rated mild steel enclosure, Polycarbonate NEMA 4X enclosure available on request.
  • Built from components that are designed and tested to operate in -40° C to 70° C (-40° F to 158° F) environments without the need for heaters or cooling fans.
  • Operates on 2 A @ 120 VAC. Can be powered by control power transformers in the motor starter.
  • Cable ducting and terminal blocks for clean and professional installations.
  • Fuses and terminals for wiring auxiliary well site systems.
  • EZViewer Graphical User Interface Software
  • The ScadaPOC uses the EZViewer software to provide a rich graphical user interface.
  • EZViewer software runs on a wide variety of Windows XP through Windows 8 laptops and tablets.
  • Allows the user to store most of their field settings for quick and easy well setup
  • A setup wizard guides even a novice user quickly through the steps of setting up a new well.
  • Provides access to basic as well as advanced ScadaPOC functions and data.

AutoCom Communication

The ScadaPOC communicates to a variety of host computer systems using the high performance AutoCom protocol.

  • Optimizes host communication performance for large data transfers including dynamometer cards.
  • AEPOC compatible register translation to minimize host programming.
  • Configurable host communications port to allow the ScadaPOC to use a wide variety of data radios and modems.

Features and Specifications

  • 16x20x8, NEMA 4, UL listed mild steel enclosure. (Polycarbonate, NEMA 4X and other size enclosures available on request.)
  • 12 VDC, 60 Watt, UL listed power supply draws only 2 Amps at 120 VAC.
  • 3 Amps at 12 VDC are available to power radio and other well site systems. (Higher power and 24 VDC power supplies are available on request.)
  • UL listed circuit breaker and AC power surge suppressor provides protection from voltage surges.
  • Built-in supply voltages for well transducers. Regulated 10 VDC supplied to load and position transducers, 24 VDC supplied to auxiliary analog inputs and output, 12 VDC supplied for digital outputs.
  • Pull-down, internally supplied solid state digital inputs provide isolation, immunity from stray induced voltages, and protection from short circuits without the need for fuses.
  • 16-Bit 0 to 10 Volt position analog input to measure position.
  • 16-Bit -150 to +150 mV differential analog input to measure loads.
  • 2 16-Bit 4 to 20 mA auxiliary analog inputs.
  • 1 16-Bit 4 to 20 mA auxiliary analog output.
  • 8 digital inputs for monitoring Hand/Off/Auto switches, Motor status as well as other well site switches.
  • Configurable alarms to handle alarms and events based on many well site process variables.
  • 7 solid state digital output for controlling pump motor and other well site systems. 12 Amp Form C buffer relays provide for isolation and higher power outputs.
  • Designed, built, and tested to work in extreme (-40° C to 70° C, -40° F to 158°F) oil field environments.
  • Wiring duct for professional looking installations.
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