Determination and validation of saturation pressure of hydrocarbon systems using extended Y -function

Hosein, Raffie; Mayrhoo, Rayadh; McCain, William D.

doi:10.1016/j.petrol.2014.10.022

Cited by 5 publications

(5 citation statements)

References 6 publications

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“…Various methods have been developed in the literature for determining a saturation pressure from CME data, such as PV isotherm, extended Y‐function, and total compressibility 1,2 . This section reviews these methods and clarifies their common limitation.…”

Section: Review Of Previous Methodsmentioning

confidence: 99%

“…The extended Y‐function, Y EXT , is defined as

Y_{EXT} = \frac{P_{i} - normalP}{P_{i} ((), \frac{V}{{normalV}_{normali}} - 1)},

where P i and V i are respectively the initial pressure and volume for CME 1 . In this method, the logarithm of Y EXT is plotted against pressure, and the breakpoint of the plot is the saturation pressure 1 .…”

Section: Review Of Previous Methodsmentioning

confidence: 99%

“…The extended Y‐function, Y EXT , is defined as

Y_{EXT} = \frac{P_{i} - normalP}{P_{i} ((), \frac{V}{{normalV}_{normali}} - 1)},

\frac{\partial ((), \log Y_{EXT})}{∂P} = \frac{- 1}{((), P_{i} - normalP) \ln 10} + \frac{- \frac{1}{V} \frac{∂V}{∂P}}{\frac{(V - {normalV}_{normali})}{V} \ln 10} = \frac{- 1}{((), P_{i} - normalP) \ln 10} + \frac{{normalC}_{normalt}}{\frac{(V - {normalV}_{normali})}{V} \ln 10} .

…”

Section: Review Of Previous Methodsmentioning

confidence: 99%

“…Phase behavior of hydrocarbon mixtures plays an important role in petroleum recovery processes. For example, phase separation of oil into the vapor and liquid phases with decreasing reservoir pressure affects the depletion strategy for an undersaturated oil reservoir 1 . In a gas condensate reservoir, the accumulation of liquified condensate near the production wells tends to reduce the gas productivity 2 .…”

Section: Introductionmentioning

confidence: 99%

“…Various methods have been proposed to determine saturation pressure from CME data in the literature 1,2,17,18 . As will be shown in this article; however, the existing methods are often unreliable.…”

Section: Introductionmentioning

confidence: 99%

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Robust and efficient determination of saturation pressure from constant mass expansion data

2021

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This article presents an improved method for the determination of saturation pressure from pressure‐volume data of constant‐mass expansion (CME) for hydrocarbon mixtures. The conventional methods rely on the direct observation of an incipient phase and/or the change in total compressibility of the fluid sample near the saturation pressure in CME; however, they are unreliable for volatile oils, gas condensates, and near‐critical fluids. The method developed in this research is to capture the expansion behavior of the overall fluid through the attraction and covolume parameters of the Peng–Robinson equation of state. The reliability of the new method is demonstrated by comparing it with the conventional methods in the case studies using 59 different fluids. It was the only method that could reliably identify saturation pressures for five volatile oils, 11 gas condensates, and one near‐critical fluid among the datasets tested.

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Section: Review Of Previous Methodsmentioning

confidence: 99%

“…The extended Y‐function, Y EXT , is defined as