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Oil Compressibility

Glaso (1980)

N.B. At pressures less than bubble point pressure, the Glaso (1980) correlations for the solution gas-oil ratio and the saturated oil formation volume factor are used to calculate the saturated oil compressibility. At pressures greater than bubble point pressure, the Vazquez-Beggs (1980) correlation for the under-saturated oil compressibility is used.

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Gas Z Compressibility Factor
Gas Formation Volume Factor

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