| Features |
Benefits |
Control |
Patented air balance control |
Automatically optimizes and controls air cylinder pressure on air-balanced units. |
Peak energy control functionality |
Inhibits well operation during peak periods of high energy cost as determined by the operator. |
Motor restart protection |
Prevents motor restart when condensation is present on motor windings. |
Power fail recovery method |
Inhibits selected load alarms following a loss of power to allow a well to pump down a high fluid level. |
Programmable (auto-acting) I/O |
Unique monitoring and control applications using analogs, meters and discretes. |
Multiple control methods |
Point or quadrant, for lower right or upper left hand portions of the surface cards, and reverse pump-off. |
Automatic idle time optimization |
Improved determination of idle time adjusted for inflow based production. |
Pump-up delay timer |
Eliminates immediate pump-off due to incomplete pump fillage following well idle time. |
Monitor only mode |
Monitor dyno cards without regard for control set points or speed ranges. Ideal for dyno card generation with VFD controlled pumping system. |
Works with all kinds of wells |
Companies can standardize on one controller for heavy oil, sand, deviated holes, etc. |
Analysis |
Gross fluid or inferred production calculations |
Accurate estimates of total fluid production from shallow and deep wells without complex well site configuration. |
Available ESP operating mode |
Allows the RPC to monitor submersible pump controllers. |
System load analysis |
Host based detection of load cell drift on changing downhole conditions. |
Cycle and run time buffers |
Easy access to historical data at the well site or using the host software. |
Dynamometer card buffers |
Access to event cards (Full, Current, Shutdown, etc.) and several cards stored leading up to the event. |
Expanded alarm features |
Host based alarms (torque, stress, pump efficiency, prime mover size, unbalance, etc.). |
New stored card types and associated alarms |
Card Area Alarm; Excessive Card Areas; and Hi-Hi, Hi, Low-Low, and Low loads. |
Alarm |
Extensive communications debugging capabilities |
Capable of analyzing data at the well site to diagnose data transmission problems due to faulty radios, etc. |
System Configuration |
Improved well site configuration |
Simple menu for configuration, data management, system diagnostics, and load cell calibration. |
Upgradeable modular hardware design |
Auxiliary I/O, communications, and local user interface options can be added in the field. |
Flexible, expandable I/O |
Three options available to allow the best match for individual well site applications. |
Backward compatible parameter structure |
Prevents incompatibility issues with older eP RPC equipment. |
Basic three level password protection scheme |
Provides security for access to critical RPC setup parameters and well control commands. |
Optional enhanced graphic display and keypad |
Menu driven user interface for configuration and review of system data including dyno cards, valve checks and run times. |
Available ESP operating mode |
Allows the RPC to interface to submersible pump controllers. |
Local graphic display |
Provides readily understood messages relating to pump system conditions. |
Digital rod load calibration |
Operator no longer has to manually adjust potentiometers to calibrate the load sensor. |
Automatic beam mounted load calibration |
Simply enter the correct maximum and minimum loads, no complex multi-step program required. |
Integrated "single package" design |
Simplifies installation with all components in one unit. |
Rugged hardware design |
Manufactured to strict standards to ensure long life and reduced cost of ownership. |
Sensor options |
Position switch, continuous position sensor, polished rod load cell and beam mounted sensor. |
Rod Pump Controller |
Enclosure |
NEMA 4X |
Weight |
Approximately 22 pounds |
Input Voltage Range |
480-Vac,120/240-Vac, 12-Vdc |
Frequency |
47- to 63-Hz |
Relay Output |
Control and watchdog |
Operating Temperature |
-40° to +185°F (-40° to +85°C) |
Printed Circuit Boards |
Conformally coated to protect against moisture, H2S, and salt air |
Communication Protocol |
Operator selectable, 8500 native, Modbus RTU, or Modbus ASCII |
Transient Protection |
Overvoltage/Transient |
Meets ANSI/IEEE C37.90.1-2989 protection specifications |
Dynamometer Card Resolution |
Samples and stores load and position data at 20 times-per-second for down-hole analysis |
Pump-off or Reverse Pump-off Detection |
Setpoint or quadrant method |
Analog-to-Digital Conversion |
Monolithic, successive approximation 12-bit A/D converter |
Polished Rod Load Cell |
Class |
Quantitative strain gauge |
Range |
0- to 30,000-lb. or 0- to 50,000-lb. |
Maximum Error |
±0.5% |
Operating Temperature |
-70° to +190°F (-55° to +88°C) |