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PREnvelopeAndLiquidXL software provides accurate calculations of hydrocarbon mixture phase envelopes and liquid drop out within the phase envelopes.  The software is primarily intended for natural gas pipeline operations, but it can also be used in numerous other operations in the oil and gas industry. Calculations can be performed for lean processed natural gases as well as extremely rich natural gases from high pressure production separators.  Calculations can be performed at natural gas pipeline operating conditions, metering conditions, compressor inlet conditions, gas turbine inlet conditions, separator vapor outlet conditions, and flowing conditions in vapor plus liquid two phase flow pipelines.

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