Numerical simulation study on gas miscibility of an oil field located in Afghanistan

Mohammad Reza Ghulami, Kyuro Sasaki, Ronald Nguele, Yuichi Sugai

Research output: Chapter in Book/Report/Conference proceedingConference contribution


In this study, a reservoir modeling approach was used to evaluate the miscibility conditions for an Afghan oil reservoir. A model of slim-tube apparatus was built for compositional simulation in CMG-GEM. Minimum miscibility pressure/enrichment (MMP/MME) of crude oil-gas (carbon dioxide, methane and nitrogen) systems were determined by slim-tube simulation. To study the reservoir performance under each injection gas process, we built a quarter of five spot pattern model. The model was assumed to represent a homogeneous section of the reservoir. Simulation results of slim-tube test suggest that, to be miscible with reservoir oil, carbon dioxide requires less addition of enriched gas comparing to nitrogen or methane. But, the reservoir section model showed that a miscible nitrogen injection is better, with higher oil recovery factor than that of miscible carbon dioxide or methane.
Original languageEnglish
Title of host publication21st Formation Evaluation Symposium of Japan
PublisherSociety of Petrophysicists and Well-Log Analysts
Number of pages5
Publication statusPublished - Oct 13 2015
Event21st Formation Evaluation Symposium of Japan - JOGMEC, Chiba, Japan
Duration: Oct 12 2015Oct 13 2015


Conference21st Formation Evaluation Symposium of Japan

All Science Journal Classification (ASJC) codes

  • Fuel Technology
  • Modelling and Simulation
  • General Earth and Planetary Sciences


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