Transport in Porous Media, Vol.63, No.1, 201-222, 2006
The total compressibility condition and resolution of local nonlinearities in an implicit black-oil model with capillary effects
An implicit black-oil model with capillary effects is studied. Various primary unknowns which include one of the phase pressures are considered, and qualitative and quantitative consequences of a choice are discussed. In particular, a total compressibility condition is defined and a local nonlinear problem is studied. A numerical method to solve the local problem is discussed.
Keywords:black-oil model;multiphase multicomponent flow;implicit formulation;total compressibility;capillary pressure;nonlinear local solver;primary unknowns