Pseudo-phase equilibrium of light and heavy crude oils for enhanced oil recovery

Pierre Ronald Nguele Odou, Kyuro Sasaki, Mohammad Reza Ghulami, Yuichi Sugai, Masanori Nakano

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

Presented paper, herein, is on phase equilibrium of light and heavy crudes known to be closely related to enhanced oil recovery (EOR). In miscible gas injection, the advancing gas (or injecting fluid) develops with petroleum fluids a miscibility front in the reservoir fluids that further reduces the viscous forces holding crudes stranded. The present work presents a phase equilibrium scheme upon which heavy oil swelling and light crude vaporization were found when carbon dioxide (or methane) was used as advancing gas. Heavy crude swelling was observed to be not only dependent on gas solubility but also on the chemical composition of the crude oil. Although a small fraction of injecting gas was distributed in the reservoir water, the initial water–oil ratio was seen to alter the bubble-point pressure from 10 to 30 % depending of the injected gas. In order to mimic miscible-like behavior during gas injection, a dynamic description of methane and carbon dioxide was proposed. Alteration of PVT parameters below and beyond the bubble-point pressure was highlighted therefrom.

Original languageEnglish
Pages (from-to)419-432
Number of pages14
JournalJournal of Petroleum Exploration and Production Technology
Volume6
Issue number3
DOIs
Publication statusPublished - Sep 1 2016

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enhanced oil recovery
phase equilibrium
heavy oil
Phase equilibria
crude oil
Crude oil
Recovery
Gases
gas
Fluids
Swelling
Carbon dioxide
Methane
Solubility
swelling
fluid
bubble
Petroleum reservoirs
carbon dioxide
methane

All Science Journal Classification (ASJC) codes

  • Fuel Technology

Cite this

Pseudo-phase equilibrium of light and heavy crude oils for enhanced oil recovery. / Nguele Odou, Pierre Ronald; Sasaki, Kyuro; Ghulami, Mohammad Reza; Sugai, Yuichi; Nakano, Masanori.

In: Journal of Petroleum Exploration and Production Technology, Vol. 6, No. 3, 01.09.2016, p. 419-432.

Research output: Contribution to journalArticle

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