Water density

Water density

Water density

The density of formation water (brine) at standard conditions (14.7psia & 60°F)

$\rho_{wSC} = C_{mg/l}/25000 + 62.428$

The density of formation water (brine) at reservoir conditions

$\rho_{wR}=1/B_w$

Example. Calculating formation water density

Example source

Input data

$\C_W = 7.1%$

Estimate the density of the brine at standard conditions (14.7psia & 60°F) and at 3176 psia and 165°F?

Solution

$\Delta V_{wP} = -0.0047241$

$\Delta V_{wT} = 0.027$

$B_w = 1.022$

Nomenclature

$B_w$ = water formation volume factor, res bbl/STB

$P$ = pressure, psia

$T$ = Temperature, °F

$\Delta V_{wP}$ = pressure correction, res bbl/STB

$\Delta V_{wT}$ = temperature correction, res bbl/STB

See also

Water solids concentration