What is HCDP (Hydrocarbon Dew Point)
Principles of HCDP | Why Control HCDP | Specifications for HCDP | Cricondentherm Temperature |
Hydrocarbon Gas Dew Point Curve

Specifications for HCDP

Pipelines use two main methods to specify contractual natural gas hydrocarbon dew points.

1. Limit on C5+ or C6+ components by analyzing for:
   • GPM (gallons of liquid per thousand SCF)
   • Mole %
2. Specifying an actual HDP by:
   • Setting a hydrocarbon dew point temperature maximum at operating pressure
   • Setting a maximum cricondentherm hydrocarbon dew point

In addition, typical pipeline specifications, or tariffs, almost always specify a maximum GHV (Gross or Higher Heating Value), which is greatly affected by heavy hydrocarbons contained in the gas stream.