A novel pore-size-dependent equation of state for modeling fluid phase behavior in nanopores

2019 ◽  
Vol 498 ◽  
pp. 72-85 ◽  
Author(s):  
Sheng Luo ◽  
Bikai Jin ◽  
Jodie L. Lutkenhaus ◽  
Hadi Nasrabadi
Keyword(s):  
Equation Of State ◽  
Phase Behavior ◽  
Pore Size ◽  
Fluid Phase ◽  
Size Dependent

scholarly journals Pore-Scale Simulation of Confined Phase Behavior with Pore Size Distribution and Its Effects on Shale Oil Production

Energies ◽  
2021 ◽  
Vol 14 (5) ◽  
pp. 1315
Author(s):  
Jingwei Huang ◽  
Hongsheng Wang
Keyword(s):  
Phase Equilibrium ◽  
Equation Of State ◽  
Pore Size Distribution ◽  
Phase Behavior ◽  
Pore Size ◽  
Size Distribution ◽  
Critical Role ◽  
Shale Oil ◽  
Pore Scale ◽  
Modified Equation

Confined phase behavior plays a critical role in predicting production from shale reservoirs. In this work, a pseudo-potential lattice Boltzmann method is applied to directly model the phase equilibrium of fluids in nanopores. First, vapor-liquid equilibrium is simulated by capturing the sudden jump on simulated adsorption isotherms in a capillary tube. In addition, effect of pore size distribution on phase equilibrium is evaluated by using a bundle of capillary tubes of various sizes. Simulated coexistence curves indicate that an effective pore size can be used to account for the effects of pore size distribution on confined phase behavior. With simulated coexistence curves from pore-scale simulation, a modified equation of state is built and applied to model the thermodynamic phase diagram of shale oil. Shifted critical properties and suppressed bubble points are observed when effects of confinement is considered. The compositional simulation shows that both predicted oil and gas production will be higher if the modified equation of state is implemented. Results are compared with those using methods of capillary pressure and critical shift.

A Pore-Size-Dependent Equation of State for Multilayer Adsorption in Cylindrical Mesopores

Langmuir ◽  
1999 ◽  
Vol 15 (10) ◽  
pp. 3632-3641 ◽  
Author(s):  
H. Y. Zhu ◽  
L. A. Ni ◽  
G. Q. Lu
Keyword(s):  
Equation Of State ◽  
Pore Size ◽  
Multilayer Adsorption ◽  
Size Dependent

Modifying Peng-Robinson Equation of State To Consider Influence of Confinement on Fluid Phase Behavior

2019 ◽  
Author(s):  
Yilei Song ◽  
Zhaojie Song ◽  
Jirui Hou ◽  
Zhixing Wang
Keyword(s):  
Equation Of State ◽  
Phase Behavior ◽  
Fluid Phase ◽  
Robinson Equation
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