ABSTRACT
Asphaltene precipitation is a major flow assurance challenge in the oil and gas industry that can significantly impact reservoir performance, leading to reduced production and increased operational costs. Therefore, understanding the mole fraction of asphaltene that precipitated nd its cumulative mass is crucial for optimizing production strategies and maximizing oil recovery. This work adopts a simulation approach for prediction of asphaltene mole fraction and cumulative mass of asphaltene in oil under pressure depletion. A 3 dmensional homogeneous reservoir model was built and created, populated with petrophysical properties, characterized and tunned with PR 1978 EOS model. The created fluid model was run for asphaltene precipitation prediction.Results shows that the cumulative mass of asphaltene produced increases gradually up to 20 days after which it remains the same. The mole fraction of asphaltene in oil was zero above the upper onset pressure and later increase as pressure deplete till the end. The mass of asphaltene precipitated was higher than the mass absorbed. The field oil recovery factor increases as the reservoir pressure depletes over time, with 12.49% of oil recovered after 150 days. Effective asphaltene management is crucial for minimizing the impact of asphaltene precipitation on reservoir performance.
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