for processing each production well is tested at the pad site on a daily basis for bottom hole pressure production volume and psor the data on psor is used for optimizing pressure decline and production operations production of a well would be terminated if its psor is high gt 3 0 and bottom hole pressure low lt 1 5 mpa the produced fluids contain ethane bitumen diluent and small amount of connate water ethane is separated in the central plant through a series of high and low pressure separators and reused for injection a small amount of diluent supplied to the plant through a pipeline is added to the produced fluids free of ethane to aid in the separation of water and oil the u201c water free u201d oil is finally trimmed with additional diluent to meet pipeline specification and shipped for marketing in oil sand industry the term u201c dilbit u201d is used to designate oil that contains diluent and bitumen ethane is viscosified for injection at the central plant prior to the blending ethane from a supply line and the recycle stream is compressed to a liquid state at 3 9 mpa and 20 u00b0 c at the upstream of an in line mixer the liquid ethane is mixed with a small stream of dilbit from the production stream sufficient dilbit is added to the mixture until viscosity of the blend.