Difference between revisions of "Water salinity from density equation"

From wiki.pengtools.com
Jump to: navigation, search
(Water salinity from density equation)
Line 29: Line 29:
  
 
==See also==
 
==See also==
 +
:[[Water bubble point pressure]]<BR/>
 +
:[[Water compressibility]]<BR/>
 +
:[[Water density]]<BR/>
 +
:[[Water formation volume factor]]<BR/>
 +
:[[Water salinity from density equation]]<BR/>
 
:[[Water solids concentration]]<BR/>
 
:[[Water solids concentration]]<BR/>
 +
:[[Water viscosity]]<BR/>
  
 
== References ==
 
== References ==

Revision as of 06:22, 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

References

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