WellSim® Rod Pump Controller

You can create a smart oilfield equipping your wells with WellSim controllers and connecting them to our SCADA system – NaftaSCADA. By means of complex mathematical model controller calculates current condition of the well and the pump, and represents that data in easy to read and interpret way to operator using graphical model. WellSim RPC stands out for its high performance that allows to process complex calculations in real time, it is adapted to work in harsh conditions (including far north and deserts environment) and has a wide range of features for flexible well mode adjustment and ease of technological operations.

 

Basic specifications

 

 

Operating temperature	-40°C to +85°C
Humidity	10-90% non-condensating
Processor	667 MHz
RAM	1 GB
Nonvolatile memory	512 MB
Ports	2xRS232, 2xRS435, 2xEthernet, 2xCAN, 2xUSB,16 digital inputs, 16 digital outputs, 8 analog inputs, 2 analog outputs
Protocols	TCP/IP, Modbus RTU, ASCII
Communications	Wi-Fi, Ethernet, GPS, GPRS/UMTS, RF
Ethernet	10/100 Mbit/s
Compatibility	NaftaSCADA, XSPOC, and other SCADA
GUI	Web-based, windows/linux/macos compatible, LabView compatible

 

WellSim RPC is designed to work with load and position sensors, mounted on polished rod, however, controller is able to control the well status without them, in so-called sensorless mode with some reduction in accuracy of calculations. 

WellSim RPC is also able to integrate with various well equipment such as downhole pressure and temperature gauges, echo sounders etc. using their data for calculation and/or transfer it to remote computer. Also WellSim RPC can be used as means of measuring of oil production rate, that eliminates the need to install separate flow meters and/or expensive downhole measuring equipment.

User-friendly software allows operator even with a minimum qualification to track by means of integrated display (HMI) or remote computer screen, well characteristics such as:

 

• Surface and downhole dynagraph cards

• Status of downhole equipment

• Pressure at the pump intake

• Pump fillage

• Oil production rate

• Loadings on pumping unit and on downhole equipment

 

WellSim RPC allows to control the well in manual and automatic modes. Automatic control is performed by complex algorithm based on mathematical model of the well in order to achieve maximum accuracy and stability of parameters calculation and maximum reliability of pumping unit.

 

Automatic control is performed in several modes:

 

• By pump fillage (Sim-Fillage)

• By pump intake pressure (Sim-PIP)

• By liquid level

• By timer (On/Off Timer)

• By schedule

• By emergency setpoints

• By remote control from SCADA

 

WellSim RPC supports Modbus RTU, integrates with SCADA, while also being a full-fledged network device (supports TCP/IP protocol) accessible through a Web-based interface. Controllers are able to unite through a variety of means of telecommunication (FM, GPRS, Wi-Max, etc.) into a single network, that allows getting information about state of all oil production facilities, creating a smart oilfield.