Difference between revisions of "Water salinity from density equation"

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==Water salinity from density equation==
 
==Water salinity from density equation==
Handy equation to get the formation water (brine) salinity from the density at standard conditions.
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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/>]]
 
[[File:Water salinity from density equation.png|thumb|right|600px|Water salinity from density equation <ref name= M1990/>]]
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== Nomenclature  ==
 
== Nomenclature  ==
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:<math> C_{ppm} </math> = water salinity / solids concentration, ppm
 
:<math> C_{mg/l} </math> = water salinity / solids concentration, mg/l
 
:<math> C_{mg/l} </math> = water salinity / solids concentration, mg/l
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:<math> C_W </math> = weight percent solids, %
 
:<math> SG_w </math> = water specific gravity, dimensionless
 
:<math> SG_w </math> = water specific gravity, dimensionless
  
 
==See also==
 
==See also==
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:[[Water bubble point pressure]]<BR/>
 +
:[[Water compressibility]]<BR/>
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:[[Water density]]<BR/>
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:[[Water formation volume factor]]<BR/>
 +
:[[Water salinity from density equation]]<BR/>
 
:[[Water solids concentration]]<BR/>
 
:[[Water solids concentration]]<BR/>
 
+
:[[Water viscosity]]<BR/>
 +
:[[Gas/Water Interfacial Tension]]
 
== References ==
 
== References ==
 
<references>
 
<references>

Latest revision as of 08:16, 5 October 2020

Water salinity from density equation

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]

Math and Physics

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

Example. Calculating water salinity from density

Example source [1]

Input data

\rho_w = 65.4 lbm/ft3

Calculate water salinity in weight percent solids?

Solution

 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 %

Nomenclature

 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

See also

Water bubble point pressure
Water compressibility
Water density
Water formation volume factor
Water salinity from density equation
Water solids concentration
Water viscosity
Gas/Water Interfacial Tension

References

  1. 1.0 1.1 McCain, W.D. Jr. (1990). Properties of Petroleum Fluids (2 ed.). Oklahoma: PennWell Corp. ISBN 978-0878143351.