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# hw8key - HOMEWORK 8 SOLUTION KEY 10-4 First calculate gas...

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HOMEWORK# 8 SOLUTION KEY 10-4. First calculate gas oil ratio at separator and stock-tank conditions. Separator gas-oil ratio 6 0.51383 scf (150.833)(6.29 10 bbl/cc) x = = 541.6 scf/ SP bbl Stock-tank gas-oil ratio 6 0.15186 scf (136.591)(6.29 10 bbl/cc) x = = 176.75 scf/ ST bbl Second, calculate gas-oil ratio based on stock-tank oil at standard conditions. Separation gas-oil ratio 6 0.51383 scf (135.641)(6.29 10 bbl/cc) x = = 602.25 scf/ STB Stock tank gas-oil ratio 6 0.15186 scf (135.641)(6.29 10 bbl/cc) x = = 177.99 scf/ STB Third, calculate formation volume factor of oil. osb volume of liquid expelled from the cell B volume of liquid arriving in the stock tank = osb 201.156 res cc B 135.641 ST cc = = 1.483 res bbl/STB Fourth, calculate separator and stock-tank shrinkage factors. Separator shrinkage factor 150.833 res cc 135.641 ST cc = = 1.112 SP bbl STB Stock-tank shrinkage factor = 136.591 cc 135.641 cc = 1.007 ST bbl STB Fifth, convert specific gravity of stock –tank oil ºAPI ºAPI = 0 141.5 131.5 γ ºAPI = 141.5 131.5 0.823 = 40.432

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