Undersaturated oil formation volume factor The measured isothermal compressibility is 11.06 × 10 -6psi -1. The measured bubblepoint oil FVF is 1.398 bbl/STB.Ĭalculate the isothermal compressibility of oil using the Farshad correlation. The measured bubblepoint pressure was reported to be 2,479 psia.Ĭalculate the bubblepoint oil formation volume factor (FVF) using the correlation from Al-Shammasi. Therefore, the bubblepoint pressure should be increased by 9.8% to 2,251 psia. Modify the calculated bubblepoint pressure to account for the effects of nitrogen in the surface gas with Jacobson’s equation. With Lasater’s relationship between bubblepoint pressure factor and bubblepoint pressure,įor comparison, Standing = 2,316 psia, Glasø = 2,725 psia, Al-Shammasi = 2,421 psia, and Velardi = 2,411 psia. Calculate the gas mole fraction in the oil,Īnd the Lasater bubblepoint pressure factor, ![]() Use the Lasater correlation to estimate bubblepoint pressure. ![]()
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