Difference between revisions of "Water formation volume factor"

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The units are reservoir barrels per surface barrel at standard conditions, res bbl/STB.
 
The units are reservoir barrels per surface barrel at standard conditions, res bbl/STB.
  
[[File:Water formation volume factor.png|thumb|right|600px|Water formation volume factor]]
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[[File:Water formation volume factor.png|thumb|right|400px|Water formation volume factor correlation in the PVT software at pengtools.com]]
  
 
==Math and Physics==
 
==Math and Physics==
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===Input data===
 
===Input data===
  
Calculate water formation volume factor at 3161 psig and 165F?
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Calculate water formation volume factor at 3176 psia and 165°F?
  
 
===Solution===
 
===Solution===
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:<math> \Delta V_{wP} = -0.0047241</math>
 
:<math> \Delta V_{wT} = 0.027</math>
 
:<math> \Delta V_{wT} = 0.027</math>
:<math> \Delta V_{wP} = -0.0047241</math>
 
 
:<math> B_w = 1.022</math>
 
:<math> B_w = 1.022</math>
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 +
The solution is also available in the PVT software model at [The solution is available in the PVT calculator software model at [https://www.pengtools.com/pvtCalculator?paramsToken=d0f0c9c587152cefc27d1217e091ace0 www.pengtools.com]
  
 
== Nomenclature  ==
 
== Nomenclature  ==
:<math> C_{ppm} </math> = water salinity / solids concentration, ppm
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:<math> B_w </math> = water formation volume factor, res bbl/STB
:<math> C_{mg/l} </math> = water salinity / solids concentration, mg/l
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:<math> P </math> = pressure, psia
:<math> C_W </math> = weight percent solids, %
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:<math> T </math> = Temperature, °F
:<math> SG_w </math> = water specific gravity, dimensionless
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:<math> \Delta V_{wP} </math> = pressure correction, res bbl/STB
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:<math> \Delta V_{wT} </math> = temperature correction, res bbl/STB
  
 
==See also==
 
==See also==
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:[[Water bubble point pressure]]<BR/>
 +
:[[Water compressibility]]<BR/>
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:[[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/>
 +
:[[Gas/Water Interfacial Tension]]
 
== References ==
 
== References ==
 
<references>
 
<references>

Latest revision as of 08:16, 5 October 2020

Water formation volume factor

The water formation volume factor represents the change in volume of the brine as it is transported from the reservoir conditions to surface conditions[1].

The units are reservoir barrels per surface barrel at standard conditions, res bbl/STB.

Water formation volume factor correlation in the PVT software at pengtools.com

Math and Physics

 B_w = (1+\Delta V_{wP})(1+\Delta V_{wT})[1]

where

 \Delta V_{wP} = -1.95301(10^{-9}) P T - 1.72834(10^{-13}) P^2 T - 3.58922(10^{-7}) P - 2.25341(10^{-10}) P^2
 \Delta V_{wT} = -1.0001(10^{-2}) + 1.33391(10^{-4}) T  + 5.50654(10^{-7}) T^2

Application range

The correlation is valid through the full range of solids concentrations, temperatures to 260F, and pressures to 5000psia[2].

Example. Calculating water formation volume factor

Example source [1]

Input data

Calculate water formation volume factor at 3176 psia and 165°F?

Solution

 \Delta V_{wP} = -0.0047241
 \Delta V_{wT} = 0.027
 B_w = 1.022

The solution is also available in the PVT software model at [The solution is available in the PVT calculator software model at www.pengtools.com

Nomenclature

 B_w = water formation volume factor, res bbl/STB
 P = pressure, psia
 T = Temperature, °F
 \Delta V_{wP} = pressure correction, res bbl/STB
 \Delta V_{wT} = temperature correction, res bbl/STB

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 1.2 McCain, W.D. Jr. (1990). Properties of Petroleum Fluids (2 ed.). Oklahoma: PennWell Corp. ISBN 978-0878143351. 
  2. McCain, W.D. Jr. (1991). "Reservoir-Fluid Property Correlations-State of the Art"Free registration required. Society of Petroleum Engineers (SPE-18571-PA).