Dynamic Criteria for Physical Modeling of Oil Displacement by Gas Injection

In this work, slim tube displacement tests for minimum miscibility pressure MMP were carried out. Based on the displacement data, the MMP was calculated by statistical regression using linear and quadratic extrapolation with threshold values of 90% and 95% oil recovery as well as the intersection of...

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Bibliographic Details
Published in:Processes 2022-12, Vol.10 (12), p.2620
Main Authors: Sorokin, Alexey S., Bolotov, Alexander V., Nuriev, Daniyar R., Derevyanko, Vadim K., Minkhanov, Ilgiz F., Varfolomeev, Mikhail A.
Format: Article
Language:English
Subjects:
Analysis
Displacement
Efficiency
Effluents
Enhanced oil recovery
Experiments
Extrapolation
Flow velocity
Gas injection
Gases
Kerosene
Miscibility
Oil
Oil recovery
Petroleum mining
Reservoirs
Statistical analysis
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Summary:In this work, slim tube displacement tests for minimum miscibility pressure MMP were carried out. Based on the displacement data, the MMP was calculated by statistical regression using linear and quadratic extrapolation with threshold values of 90% and 95% oil recovery as well as the intersection of trend lines for immiscible and miscible displacement regimes. The obtained data show a significant variation in the range of MMP values depending on the calculation method. To clarify the MMP value, an analysis of displacement dynamics was carried out. The ratio of the volume flow rate of reservoir oil to the volume flow rate of the injected gas—flow rates ratio (FFR)—was used as a new parameter. The MMP value calculated from the FRR value extrapolation was determined as 37.09 MPa. According to the results obtained, the proposed methodology based on the displacement dynamics can be useful as a criterion for clarifying the MMP value in slim tube displacement experiments.
ISSN:2227-9717
2227-9717
DOI:10.3390/pr10122620