PROPERTIES OF OILFIELD BRINES - Petroleum Reservoir Fluid Property Correlations - page 170

Step 18. Next, calculate the molar volume of methane, V M CH 4 (g) , in cm 3 ,
in the gas phase from the real gas law, as shown in equation (4.34).
(4.34)
Step 19. Next, calculate the compressibility of saturated brine, c ws , in
MPa -1 , from equation (4.35).
(4.35)
Formation volume factor of brine
Step 20. Calculate the specific volume of methane-free brine, v b, 0 at
standard conditions from equation (4.23).
Step 21. Calculate the brine formation volume factor, B w , in res cm 3 /std
cm 3 , from equation (4.36).
(4.36)
Solution gas-water ratio of methane in brine
Step 22. Calculate the solution gas-water ratio of methane in brine, R sw ,
in std cm 3 /std cm 3 , from equation (4.37).
(4.37)