Phase Behavior of Fluid Mixtures in a Partially Confined Space

2016 ◽  
Author(s):  
Yueliang Liu ◽  
Huazhou Andy Li ◽  
Ryosuke Okuno
Keyword(s):  
Phase Behavior ◽  
Confined Space ◽  
Fluid Mixtures

Rapid method for the determination of phase behavior of fluid mixtures employed in supercritical fluid experiments

1993 ◽  
Vol 65 (10) ◽  
pp. 1493-1495 ◽  
Author(s):  
Steven H. Page ◽  
Hao. Yun ◽  
Milton L. Lee ◽  
Steven R. Goates
Keyword(s):  
Phase Behavior ◽  
Rapid Method ◽  
Supercritical Fluid ◽  
Fluid Mixtures

Phase Behavior and Minimum Miscibility Pressure in Nanopores

2014 ◽  
Vol 17 (03) ◽  
pp. 396-403 ◽  
Author(s):  
Tadesse Weldu Teklu ◽  
Najeeb Alharthy ◽  
Hossein Kazemi ◽  
Xiaolong Yin ◽  
Ramona M. Graves ◽  
...  
Keyword(s):  
Phase Behavior ◽  
Electrostatic Interactions ◽  
Structural Changes ◽  
Unconventional Reservoirs ◽  
Gas Oil ◽  
Confined Space ◽  
Liquid Equilibrium ◽  
Minimum Miscibility Pressure ◽  
Multiple Mixing ◽  
Carbon Dioxide Co2

Summary Numerous studies indicate that the pressure/volume/temperature (PVT) phase behavior of fluids in large pores (designated “unconfined” space) deviates from phase behavior in nanopores (designated “confined” space). The deviation in confined space has been attributed to the increase in capillary force, electrostatic interactions, van der Waals forces, and fluid structural changes. In this paper, conventional vapor/liquid equilibrium (VLE) calculations are modified to account for the capillary pressure and the critical-pressure and -temperature shifts in nanopores. The modified VLE is used to study the phase behavior of reservoir fluids in unconventional reservoirs. The multiple-mixing-cell (MMC) algorithm and the modified VLE procedure were used to determine the minimal miscibility pressure (MMP) of a synthetic oil and Bakken oil with carbon dioxide (CO2) and mixtures of CO2 and methane gas. We show that the bubblepoint pressure, gas/oil interfacial tension (IFT), and MMP are decreased with confinement (nanopores), whereas the upper dewpoint pressure increases and the lower dewpoint pressure decreases.

Supercritical fluid mixtures: prediction of the phase behavior

1985 ◽  
Vol 89 (12) ◽  
pp. 2671-2675 ◽  
Author(s):  
J. M. Wong ◽  
R. S. Pearlman ◽  
K. P. Johnston
Keyword(s):  
Phase Behavior ◽  
Supercritical Fluid ◽  
Fluid Mixtures
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