7. Inlet and Produced Gas Areas

There are four treatment vessels in the oil train. The inlet degasser is the first separation vessel, which takes emulsion from the production stream and adjusts the pressure. This is where vapours flash so that light ends are removed prior to mixing with Diluent in the free water knock out (FWKO). Liquids flow from the bottom of the inlet degasser through a cooler in order to reach treatment temperature between 110 and 140°C. Diluent is then added and the liquids flow through to the second treatment vessel, the FWKO, which removes all but 5-15 per cent of the water.

The oil then flows to the third vessel, the treater, where water is removed to 0.5 per cent bottom solids and water.

At this point, the oil needs to be stabilized for shipment via either pipeline or truck. Excess vapour is flashed in the dilbit gas boot. As pressure is dropped to flash vapours off the product, the oil is pumped through the cooler and to the dilbit tanks. The cooler, like all coolers in the Pilot, uses boiler feed water as the cooling media.

The produced gas building has four vessels and three exchangers outside to contain and cool produced gas from all plant locations and casing gas from the production wells to knock out Solvent and water. Cool gas is combined with natural gas, mixed with fuel gas and used for boiler fuel, which reduces flaring and fuel gas costs. As well, the gas from each well is measured individually to determine the components and volumes of the produced gas.

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