This paper will cover the implementation of Ethernet applications in SCADA system communications and architecture.Supervisory Control and Data acquisition(SCADA) systems provide a superior base for better controlled facilities in the upstream,midstream and pipelines for oil and gas facilities.Computerized handling of remote installations is integrated with communications and provides means for reducing the operating cost,cost of maintenance and effective handling of the Oil and Gas network.System parameters communicated via wireless data network must present true conditions related to the status of the field equipment including the Custody Transfer Measurement Systems.In likewise manner,commands sent to remote sites must be promptly executed and the back indication is to be sent to the control center.
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