Difference between revisions of "Water salinity from density equation"

From wiki.pengtools.com
Jump to: navigation, search
Line 7: Line 7:
 
==Math and Physics==
 
==Math and Physics==
  
:<math> C_{mg/l} = 10e7 (SG_w - 1) / 7.8216</math>
+
:<math> C_{mg/l} = 1e7 (SG_w - 1) / 7.8216</math>
 +
 
 +
==Example. Calculating water salinity from density==
 +
Example source <ref name= M1990/>
 +
===Input data===
 +
:<math>\rho_w</math> = 65.4 lbm/ft3
 +
 
 +
Calculate water salinity in weight percent solids?
 +
 
 +
===Solution===
 +
:<math>SG_w=\rho_w\62.428=1.0476</math>
 +
:<math> C_{mg/l} = 1e7 (1.0476 - 1) / 7.8216=60857.1</math>
  
 
== Nomenclature  ==
 
== Nomenclature  ==

Revision as of 12:57, 30 September 2020

Water salinity from density equation

Handy equation to get the formation water (brine) salinity from the density at standard conditions.

Water salinity from density equation [1]

Math and Physics

 C_{mg/l} = 1e7 (SG_w - 1) / 7.8216

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

Failed to parse (lexing error): SG_w=\rho_w\62.428=1.0476
 C_{mg/l} = 1e7 (1.0476 - 1) / 7.8216=60857.1

Nomenclature

 C_{mg/l} = water salinity / solids concentration, mg/l
 SG_w = water specific gravity, dimensionless

See also

Water solids concentration

References

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