Operational Modes of the ePAC™ Vector Flux Drive Rod Pumping System

Single Speed

In single speed mode, the user sets one speed for the up and down stroke. The pump speed monitor uses the motor velocity and overall gear ratio to calculate both the instantaneous and average pump speed.

Dual Speed

Dual speed control mode allows the operator to manually optimize the performance of the well by adjusting both the up and down stroke speeds to the required speeds.

Optimize

The pump fill optimizer offers an advanced form of pump fill control without the traditional requirement of separate devices or control hardware.

The ePAC VFD automatically adapts to changing well inflow characteristics by adjusting up and down stroke speeds to maximize well production while avoiding fluid pound.

The pump fill monitor uses information from the motor and crank to determine pump fill percentage. Pump fill is displayed to the operator as a percent fill number and is used to automatically optimize well production.

User Interfaces the of the ePAC Vector Flux Drive Rod Pumping System

• An operator interface provides access to system parameters that are organized into logical groupings for easy navigation.
• On-line setup instructions, prompts, warnings, bar graph displays, and logical data groupings result in fast startups, smooth operation, and minimum downtime.
• Pump fill monitor continuously measures and displays the pump fill percentage.
• 16-button keypad allows simple menu navigation and data entry.
• 2-line by 24-character display provides easily read text/graphics.
• Optional graphics display available for viewing real-time surface and pump cards.
• Password protection is used to prevent unauthorized access to drive parameters.
• Fault log is used to capture time-stamped diagnostic information to aid in troubleshooting drive or pump problems.
• Additional parameters that can be monitored include:
  • Input power monitor
  • Lift power monitor
  • Input power meter
  • Pumping efficiency
  • Production monitor
  • Pump cycle monitor
  • Balance monitor
• Enhanced RTU protocol allows efficient transfer of both 16- and 32-bit data through local or remote networks.