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The aim is to evaluate and select appropriate enhanced oil recovery (EOR) methods for Iraqi oil reservoirs using TOPSIS.

Application of Multi‐Criteria Decision Analysis (TOPSIS) for Screening Enhanced Oil Recovery Methods: A Case Study of Iraqi Reservoirs

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The aim is to evaluate and select appropriate enhanced oil recovery (EOR) methods for Iraqi oil reservoirs using TOPSIS.
Applied TOPSIS to evaluate 16 EOR methods based on 9 reservoir and fluid properties.
Analyzed 12 Iraqi reservoirs with diverse lithologies and conditions.
Ranked EOR methods based on their performance related to reservoir characteristics.
Surfactant + polymer/alkaline (P/A) is the top-ranked EOR method at 50%.
Immiscible CO2 ranked second at 25%; immiscible N2 at 16.7%; and miscible N2 at 8.3%.
Steam injection was consistently rated as the least suitable method.

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Analysis identifies optimal enhanced oil recovery methods in Iraqi reservoirs, suggesting improved oil production strategies.

Rasul et al. (2026) studied this question.

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