Difference between revisions of "Water salinity from density equation"

Revision as of 13:55, 30 September 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.

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 __TOC__
 ==Water salinity from density equation==
-Handy equation to get the formation water (brine) salinity from the density at standard conditions obtained by the the data regression with a stage line.
+Handy equation to get the formation water (brine) salinity from the density at standard conditions obtained by the data regression with a stage line.
 [[File:Water salinity from density equation.png|thumb|right|600px|Water salinity from density equation <ref name= M1990/>]]