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Phase Behavior and ThermodynamicsGas Properties

Water Content of Sour Gas Formula

W=yWhc+yCO2WCO2+yH2SWH2SW=yW_{hc}+y_{CO2}W_{CO2}+y_{H2S}W_{H2S}

Water Content of Sour Gas calculates water content of sour gas for gas properties workflows in phase behavior and thermodynamics.

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How engineers use this formula

Use this formula when the listed inputs (y, Whc, yco, Wco, yhs, Whs) are known and the assumptions behind the cited gas properties relationship match the engineering case being checked.

Assumptions

  • Input values are representative for the well, reservoir, fluid, or equipment case being evaluated.
  • The declared units match the field-unit constants used in the formula.
  • The cited formula applies to the selected petroleum engineering workflow.

Limitations

  • The calculation does not replace a full engineering model or operating procedure.
  • Accuracy depends on the source correlation, assumptions, input quality, and unit consistency.

Common mistakes

  • Mixing unit systems without converting the inputs.
  • Using default example values as field recommendations.
  • Applying the formula outside the source assumptions.

Default example

Using the default inputs, W equals 0.0236 fraction.

yfraction

0.9

Whcfraction

0.02

ycofraction

0.06

Wcofraction

0.04

yhsfraction

0.04

Whsfraction

0.08

Inputs

y

fraction

Mole Fraction of Hydrocarbon Gas

Whc

fraction

Water Content of Hydrocarbon Gas Portion

yco

fraction

Mole Fraction of Carbon Dioxide

Wco

fraction

Water Content of Carbon Dioxide Portion

yhs

fraction

Mole Fraction of Hydrogen Sulfide

Whs

fraction

Water Content of Hydrogen Sulfide Portion

Outputs

W

fraction

Water Content of Sour Gas

Whc

fraction

Water Content of Hydrocarbon Gas Portion

Wco

fraction

Water Content of Carbon Dioxide Portion

Whs

fraction

Water Content of Hydrogen Sulfide Portion

Source and review

reviewed

Gas Conditioning and Processing, Campbell, J. M. (1992)

Campbell, J. M. 1992. Gas Conditioning and Processing, Vol. 1, Campbell Petroleum Series, Page 149.

Source

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