Predicting Fluid Properties in the MUFITS Reservoir Simulator with User-Supplied Modules

Table 4

API for PhaseEquilibrium.

Interface call PhaseEquilibrium(, , , np, , Id, , Mode)
Variable	Intent	Datatype	Description
	in	real(8)	Average fluid pressure, Pa
	in	real(8)	Fluid temperature, degree K
	in	real(8)	Bulk mass composition (array of size nc)
np	in/out	integer(4)	Number of fluid phases
	in/out	real(8)	Parameters of the phases (2-D array of size (6 + nc) × npmax); only the first np columns of the array are relevant, i.e.
Id	in/out	integer(1)	Phase identifier (array of size x); only the first np elements of the array are relevant, i.e.
	in/out	real(8)	Auxiliary variables (array of size na)
Mode	in	integer(1)	Calculation mode