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| Material Balance Studies |
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A basic tool for analyzing reservoir performance. The Material balance was originally carried out treating the reservoir as a single tank, defined by a single average reservoir pressure.
The input data comprises the knowledge of average reservoir pressure of reservoir, PVT properties, rock and fluid parameters. The deliverables of the study are:
- Estimating initial hydrocarbons in place
- Predicting future reservoir performance
- Estimating water influx
- Analyzing drive mechanism
- Predicting ultimate hydrocarbon recovery under various primary drive mechanisms
The average reservoir pressure can be found from buildup analysis that should be conducted periodically. Few assumptions like constant temperature, constant reservoir volume and pressure equilibrium (all parts of reservoir having same pressure) are made, indicating it to be a useful reservoir engineering tool.
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Material balance of reservoir rock and fluid volumes |
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