TY - JOUR
T1 - Speeding up the Two-Phase PT-flash, with Applications for Calculation of Miscible Displacement
AU - Michelsen, Michael Locht
PY - 1998
Y1 - 1998
N2 - Possibilities for optimizing the work-horse of phase equilibrium calculations, the two-phase PT-flash have been investigated. Significant improvements relative to conventional approaches are obtained by using a full Newton's method for solving the equilibrium equations and by combining the evaluation of thermodynamic properties for the two phases into a single evaluation of the quantities of interest. The algorithm is tested on a compositional simulation where it is shown that for a hydrocarbon mixture with a number of components that enables a realistic description of a reservoir oil (10-15) it is possible to carry out about 5000 rigorous flash calculations per second on a personal computer.
AB - Possibilities for optimizing the work-horse of phase equilibrium calculations, the two-phase PT-flash have been investigated. Significant improvements relative to conventional approaches are obtained by using a full Newton's method for solving the equilibrium equations and by combining the evaluation of thermodynamic properties for the two phases into a single evaluation of the quantities of interest. The algorithm is tested on a compositional simulation where it is shown that for a hydrocarbon mixture with a number of components that enables a realistic description of a reservoir oil (10-15) it is possible to carry out about 5000 rigorous flash calculations per second on a personal computer.
U2 - 10.1016/s0378-3812(97)00313-0
DO - 10.1016/s0378-3812(97)00313-0
M3 - Journal article
SN - 0378-3812
VL - 143
SP - 1
EP - 12
JO - Fluid Phase Equilibria
JF - Fluid Phase Equilibria
IS - 1-2
ER -