Methodology for predicting the phase envelope of a heavy crude oil and its asphaltene deposition onset

E. López-Chávez; J. H. Pacheco-Sánchez; J. M. Martínez-Magadán; F. De Landa Castillo-Alvarado; C. Soto-Figueroa; I. García-Cruz

doi:10.1080/10916460601054180

Methodology for predicting the phase envelope of a heavy crude oil and its asphaltene deposition onset

E. López-Chávez, J. H. Pacheco-Sánchez, J. M. Martínez-Magadán, F. De Landa Castillo-Alvarado, C. Soto-Figueroa, I. García-Cruz

Escuela Superior de Física y Matemáticas (ESFM)

Research output: Contribution to journal › Article › peer-review

10 Scopus citations

Abstract

We have presented general ideas to develop a new theoretical methodology, based on molecular simulation and equations of state, for obtaining the phase envelope and to predict pressure, volume, temperature (PVT) conditions of asphaltene precipitation by only taking into account the composition of the heavy crude oil and an asphaltene average molecular structure. Those results show that asphaltene precipitation is a reversible thermodynamic process. The precipitated phase is a liquid phase which consists of mainly asphaltene and some heavy fractions from the crude. This methodology can be applied to find complete phase diagrams of different crude oils based on an asphaltene average molecular structure and the composition of crude oil.

Original language	English
Pages (from-to)	19-39
Number of pages	21
Journal	Petroleum Science and Technology
Volume	25
Issue number	1-2
DOIs	https://doi.org/10.1080/10916460601054180
State	Published - Jan 2007

Keywords

Asphaltene
Equation of state
Model
Molecular simulation

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10.1080/10916460601054180

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abstract = "We have presented general ideas to develop a new theoretical methodology, based on molecular simulation and equations of state, for obtaining the phase envelope and to predict pressure, volume, temperature (PVT) conditions of asphaltene precipitation by only taking into account the composition of the heavy crude oil and an asphaltene average molecular structure. Those results show that asphaltene precipitation is a reversible thermodynamic process. The precipitated phase is a liquid phase which consists of mainly asphaltene and some heavy fractions from the crude. This methodology can be applied to find complete phase diagrams of different crude oils based on an asphaltene average molecular structure and the composition of crude oil.",

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T1 - Methodology for predicting the phase envelope of a heavy crude oil and its asphaltene deposition onset

AU - López-Chávez, E.

AU - Pacheco-Sánchez, J. H.

AU - Martínez-Magadán, J. M.

AU - Castillo-Alvarado, F. De Landa

AU - Soto-Figueroa, C.

AU - García-Cruz, I.

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N2 - We have presented general ideas to develop a new theoretical methodology, based on molecular simulation and equations of state, for obtaining the phase envelope and to predict pressure, volume, temperature (PVT) conditions of asphaltene precipitation by only taking into account the composition of the heavy crude oil and an asphaltene average molecular structure. Those results show that asphaltene precipitation is a reversible thermodynamic process. The precipitated phase is a liquid phase which consists of mainly asphaltene and some heavy fractions from the crude. This methodology can be applied to find complete phase diagrams of different crude oils based on an asphaltene average molecular structure and the composition of crude oil.

AB - We have presented general ideas to develop a new theoretical methodology, based on molecular simulation and equations of state, for obtaining the phase envelope and to predict pressure, volume, temperature (PVT) conditions of asphaltene precipitation by only taking into account the composition of the heavy crude oil and an asphaltene average molecular structure. Those results show that asphaltene precipitation is a reversible thermodynamic process. The precipitated phase is a liquid phase which consists of mainly asphaltene and some heavy fractions from the crude. This methodology can be applied to find complete phase diagrams of different crude oils based on an asphaltene average molecular structure and the composition of crude oil.

KW - Asphaltene

KW - Equation of state

KW - Model

KW - Molecular simulation

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JO - Petroleum Science and Technology

JF - Petroleum Science and Technology

IS - 1-2

ER -

Methodology for predicting the phase envelope of a heavy crude oil and its asphaltene deposition onset

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Keywords

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