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KDU IRZ centralized control system

Purpose

Remote monitoring and control of equipment used at the oilfield in order to improve the technological process, reduce costs, and increase the efficiency of oil production.

The system includes

  • the upper level comprising software, InTouch or Trace Mode SCADA system, data base, web reports, operator's automated workstation, redundant communication channels, server storage systems.
  • the middle level comprising drives, remote control cabinets, industrial communication facilities
  • the lower level comprising all kinds of discrete, analog, or unified protocol sensors, as well as actuating units (gate valves, valves, pumps)

KDU IRZ description

Centralized control system has hierarchic three-level structure.

  • the lower level comprises primary measuring transducers and actuating units involved into the production process and control stations for local automatic equipment (control stations for electric submersible pumps, sucker-rod pumps and group metering stations).
  • the middle level comprises production process drives of IRZ-501 series that receive data from sensors and primary measuring transducers of the lower level, and transfer the data to the master controller that is an intermediate link of the system. The controller optimizes the cluster signals and transfers the data to the central control room via communication equipment.
  • the upper level comprises operator’s automated workstation and data base server with the software which receives and archives the data about the technological process parameters (pressure, temperature, flow rate), protection signaling and system voltage. When any object is disconnected, the operator receives the signal indicating disconnection and describing reasons. For analytical data treatment, the reports are forwarded via WEB-interface.

The equipment provides

  • manual or automatic control of gate valves, valves and pumps
  • monitoring of levels, pressures, vibrations, temperatures, etc.
  • monitoring of oil flow and quality, water content
  • control and monitoring of any technological parameters according to the customer's requirements

Advantages

  • building a centralized system for data collection and management of remote objects (automated control system)
  • flexible routing at joint use of various communication equipment for data transmission: radio modems in the frequency range 433—434 MHz, 146—174 MHz, GPRS modems, broadband access systems for high-speed data transmission via the radio channel, connection to Ethernet networks, etc.
  • improving the quality and safety of the technological process by extension of the information support for technological and operational personnel, reducing the number of functions performed by personnel due to their automation, increasing the efficiency of personnel actions
  • reducing oil losses and improving environmental conditions at the site
  • reducing probability of emergencies
  • reducing oil production operating costs (transportation expenses) due to timely and coordinated departure of repair crews at emergency shutdowns and reclosures after planned shutdowns

Functions

Automated workplace is designed for remote control of geographically distributed cluster equipment. Its functions are as follows:

  • managing the oil production processes in the cluster in accordance with the requirements of industrial safety
  • archiving of each cluster current technological information for further analysis and reporting documentation preparation

The automated control system can perform its functions at various objects of the oil and gas infrastructure.

Functions of automatic control systems for electric submersible pumps (ESP)

  • on-line control and monitoring of submersible electric motor parameters
  • remote control of ESP
  • wellhead pressure control
  • Functions for sucker-rod pumps (SRP)
  • on-line control of a pump jack
  • on-line review of dynamometer and current charts
  • wellhead pressure control

Functions for booster pipeline pumping stations

  • control and monitoring pumps and electric motors operation parameters
  • control of cubic capacity
  • pressure control
  • oil flow control
  • valve state control

Functions for group metering stations (GMS)

  • automatic and remote control of a well multiway switch
  • pressure control at GMS output
  • well flow rate determination
  • transmission of technological process parameters and ESP/SRP control commands to operator's workstation
  • protection signaling for GMS and instrumentation and automated control systems premises
  • automatic sampling of slave units (wells) in a background mode

Functions for oil treatment plants

  • independent support of process conditions in accordance with the process procedure requirements
  • emergency prevention
  • protection against personnel errors
  • technical means inspection and diagnostics
  • automatic sampling and storing the values of the main process parameters for monitored sites (pressure, levels, temperature, etc.)
  • reception and transmission of signals indicating pre-emergency and emergency situations or events
  • remote control of processing equipment operation (pumps, electric bolts, valves, etc.)
  • archiving data of process progress, parameters changes, events and personnel activities

Functions for group pumping stations

  • control of pumps and electric motors operation parameters
  • control of cubic capacity
  • pressure control
  • water flow control
  • pump condition control

Functions for water distribution points

  • control of stratum water flow rate for each well
  • pressure control

Functions for automatic system for energy resources metering and recording

  • automatic collection and archiving of resources consumption data
  • display of current information about electrical energy consumption and flow rate
  • preparation of reports
  • power equipment parameters analysis to evaluate implemented energy saving measures

Functions for chemical injection units

  • automatic control of reagents supply according to the operator's instructions
  • control of temperature parameters, limit pressure, reagent level, fire and security alarm, gas content level
  • reagent flow rate calculation
  • control of pumps and dispensers, adjustment of parameters both from the local control panel and remotely from the control room
  • archiving of current parameters and reports preparation
ParameterValue
Max. number of connected units 10000
Communication range ≤100 km
Network protocols Modbus RTU, Modbus TCP, DNP3

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