Difference between revisions of "Water salinity from density equation"

Latest revision as of 08:16, 5 October 2020

Handy equation to get the formation water (brine) salinity from the density at standard conditions obtained by the data regression with a stage line.

Water salinity from density equation ^[1]

C_{mg/l} = 25000 \times (SG_w - 1) \times 62.428

Example source ^[1]

\rho_w

= 65.4 lbm/ft3

Calculate water salinity in weight percent solids?

SG_w = \rho_w/62.428=1.0476

C_{mg/l} = 25000 (1.0476 - 1) 62.428 = 74289.32

C_{ppm} = 74289.32 / 1.0476 = 70913.8

C_W = 70913.8 / 10000 = 7.1 %

C_{ppm}

= water salinity / solids concentration, ppm

C_{mg/l}

= water salinity / solids concentration, mg/l

C_W

= weight percent solids, %

SG_w

= water specific gravity, dimensionless

↑ ^1.0 ^1.1 McCain, W.D. Jr. (1990). Properties of Petroleum Fluids (2 ed.). Oklahoma: PennWell Corp. ISBN 978-0878143351.

@@ Line 36: / Line 36: @@
 :[[Water solids concentration]]<BR/>
 :[[Water viscosity]]<BR/>
+:[[Gas/Water Interfacial Tension]]
 == References ==
 <references>