A system for monitoring gas carry-under of a formation fluid exiting a gas
separator by measuring a parameter of interest of the formation fluid
exiting the gas separator is disclosed. The parameter of interest that can
be correlated with the extent of gas entrained in the formation fluid
exiting the separator can be the density of the formation fluid, or an
absorbance spectrum of the formation fluid. A correlation of the
measurement of the parameter of interest with a level of gas carry-under
is made and a signal is transmitted to a device to control the supply of
at least one additive to control the gas carry-under.