Analysis of Communication Network Reliability Improvement SCADA Based for Pumping Wells Offshore

Abstract

SCADA (Supervisory Control and Data Acquisition) is one of the systems used to monitor and control ESP (Electric Submersible Pump) offshore in real time. SCADA system consists of three main parts, namely MTU (Master Terminal Unit), RTU (Remote Terminal Unit) and communication media (link). MTU or Master, functions as a communication controller by sending commands (queries) while RTU or Slave, functions to respond to the Master's command about the condition of the plant. Communication between Master and Slave uses Modbus protocol communication rules. Background of the problems faced by monitoring and control system for ESP wells offshore is the unstable quality of SCADA system communication network (intermittent), multiple delays causing data from ESP well is not fully stored in the database. In current condition, communication media on ESP controller uses serial RS-485 while in the implementation of SCADA system using Ethernet communication media. Purpose of this research is to analyze the improvement of communication network reliability by comparing technology and empirical testing on SCADA system. Results of this research have an impact on production optimization, reduction of operational and equipment maintenance costs and allow for the development offuture technologies such as the Internet of Things (IoT).