John G. Greenslade Phillips Petroleum Resources Ltd. Calgary Edward Wichert Gascan Resources Ltd. Calgary Important new safety and operational features and some industry firsts are employed in a PC-based supervisory control and data acquisition (scada) system at Phillips Petroleum Resources Ltd.'s Ghost River sour-gas field and pipeline in a populated area near Calgary. The scada system monitors and controls wells, line-heaters, pumps, and alarm and shutdown systems. Facilities are operated on a partially attended basis. Operators carry cellular telephones and laptop computers equipped with internal modems to ena...

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