1 An oil field with several wells has the following production history. Producin

Question

1 An oil field with several wells has the following production history. Producing gas-oil ratio is really separator gas-oil ratio; stock-tank gas is vented and not metered. Separator conditions are 35 psig and 120°F. Separator gas specific gravity is 0.85, and stock-tank oil gravity is 40°API. Estimate solution gas-oil ratio at the bubble point. Compare your answer with laboratory results of 320 scf/STB. Producing gas-oil ratio scf/sth 310 322 286 305 317 402 434 515 575 610 661 602 723 769 848 911 974 990 1092 1044 1143 1170 1318 1271 1407 1485 1494 1373 1467 1305 Cumulative oil production MSTB 260 455 761 1024 1319 1699 1910 2201 2400 2607 2800 2959 3111 3231 3360 3480 3591 3676 3799 3890 3992 4039 4110 4205 4275 4317 4390 4435 4500 4540 46

Explanation / Answer

producing gas oil ration divided by 320scf/STB and multiply it by 40 degree and compare it with the before caluclations

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