A consistent procedure for pseudo-component delumping

Reservoir fluid applications of a pseudo-component delumping new analytical procedure

“…(9a). Leibovici et al (1997) recommend the use of the negative flash concept (Whitson and Michelsen, 1990); in this case the delumping returns for V either a small positive or a value smaller than (but close to) one.…”

“…(1) by multilinear regression. In the following, we will refer to the proposed analytical delumping method as the "reduction" method, and to Leibovici et al (1997) delumping method for non-zero BIPs as "regression" method.…”

“…The delumping method of Leibovici et al (1997) is analytical only if all BIPs are zero; if there are non-zero BIPs, they obtain the coefficients C in Eq. (1) by multilinear regression.…”

“…The process of inferring the "detailed" composition of the liquid and vapor phases from the results of a flash calculation (or of a simulation involving a series of flash calculations) on a "lumped" fluid system is referred to as "delumping" or "inverse lumping" (Schlijper and Drohm, 1988;Danesh et al, 1992;Leibovici et al, 1997). The quality of the "delumping" process is assessed by comparing the results to those obtained by carrying out the flash calculation (or the series of flash calculations) with the "detailed" fluid.…”

An improved numerical simulator for multiphase flow in porous media

“…It is based on the symmetric black oil model with the assumption that the water is always in water phase and any of the hydrocarbons may be in both gas and oil phase. For more information and details about compositional models we refer to References [24][25][26].…”