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Upgrade optimizes Weyburn tank vapor recovery, pressure relief

12/14/2009
By Kenneth J. Vargas
An upgrade of the Weyburn tank battery vapor-recovery system eliminated the problem of the tank pressure and vacuum relief valves (PVRVs) venting to the atmosphere.The work involved running a simulation that used the Peng Robinson Sour (PRS) equation of state to match the production tank vented flows. Once the simulation obtained the match, the next step entered the maximum expected future tank vented flows into a process simulation.The maximum PRS simulated flows provided the basis for sizing the equipment for the upgrade.Weyburn batteryEnCana Corp.'s Weyburn Saskatchewan oil battery reinjects dense-phase CO2 for enhancing oil recovery. The battery separates produced gas from the oil and...
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