Difference between revisions of "Water bubble point pressure"

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Water bubble point pressure

The concentration of solids in formation water (brines) are reported in several different ways [1].

Math and Physics

C_{ppm} = \frac{gram\ solid}{10^6\ gram\ water}
C_{mg/l} = \frac{milligram\ solid}{litre\ water}
C_W = \frac{gram\ solid}{100\ gram\ water}

Conversions

C_{mg/l} = C_{ppm}\ SG_w

Often, parts per million and milligrams per liter are used interchangeably. This is correct only if the density of the brine at standard conditions can be assumed to be 1 g/cc ( 1000 kg/m3, SG_w=1, 62.428 lbm/ft3) [1].

C_W = C_{ppm}/10000

Nomenclature

C_{ppm} = water salinity or solids concentration, ppm
C_{mg/l} = water salinity or solids concentration, mg/l
C_W = water salinity or weight percent solids, %
SG_w = water specific gravity, dimensionless

See also

Water salinity from density equation

References

  1. ↑ 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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