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Abstract

Summary

The material balance study was conducted using an application of Petroleum Experts’ MBAL software and determined that significant volumes of CO2-rich gas were cross-flowing between reservoirs trough fault system that was activated with a start of production and pressure depletion. The magnitude of the cross-flow volumes significantly impacted well and reservoir performance and modelling. Quantification of CO2 gas volumes in production is crucial for future field redevelopment.

The novelty of the use of MBAL multi-tank model in this scenario is in the ability to history match the model in reasonable time. This is achieved while effectively managing reservoir uncertainties. This is critical for key business decisions, business planning, general reservoir management and production. This has provided high confidence in the model’s robustness, and validates the adopted methodology, which has broader applications to enable material balance modelling of reservoir cross-flow. The purpose of this article is to present the methods and practices and to show how they can be applied to other fields/reservoirs.

© EAGE Publications BV
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/content/papers/10.3997/2214-4609.202335001
2023-11-27
2025-07-11

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References

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/content/papers/10.3997/2214-4609.202335001
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Evaluation of CO2 Cross-Flow in Compartmentalized Reservoirs in Gas Field Using Material Balance Modelling
Conference Proceedings 2023, 1 (2023); https://doi.org/10.3997/2214-4609.202335001
/content/papers/10.3997/2214-4609.202335001
/content/papers/10.3997/2214-4609.202335001
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