### Abstract

A well-known problem confronted with naturally occuring hydrocarbon systems is characterization of the high molecular weight fraction. The high molecular weight fraction must be split into an optimum number of pseudo-components each having a prescribed set of critical properties and interaction coefficients. Since procedures for doing this are largely empirical, typical equation of state packages must be tuned to available experimental data. In this paper, a methodology for achieving this task is described. First starting values of binary interaction parameters and critical properties are obtained. Then, a linear optimization technique (two-phase method) is adopted for non-linear applications. Tuned sets of binary interaction parameters and critical properties of pseudo-components for a cubic equation of state are generated by using experimental depletion curves.

Original language | English (US) |
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Title of host publication | Society of Petroleum Engineers of AIME, (Paper) SPE |

Publisher | Soc of Petroleum Engineers of AIME, USA SPE 16940 |

Pages | 71-80 |

Number of pages | 10 |

Volume | Pi |

State | Published - 1987 |

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### All Science Journal Classification (ASJC) codes

- Engineering(all)

### Cite this

*Society of Petroleum Engineers of AIME, (Paper) SPE*(Vol. Pi, pp. 71-80). Soc of Petroleum Engineers of AIME, USA SPE 16940.