Pressure is changing during the operation in an unexpected way
Pressure in the reservoir can change through time during operation due to partial reinjection of the produced fluid in the reservoir or due to interferences with other operations. This risk is generally accounted for during management plan of the field ahead of the project and is closely monitored over time by measuring the pressure in the reservoir or at well head.
Informations
- Category: Risks due to subsurface uncertainties
- Id: D-6
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Phases:
- Exploitation / Development
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Consequences:
- Economic / Performance / Acceptability
Mitigation
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Prevention:
- Thorough reservoir management plan ( e.g. thermal fluid re-injection)
- Additional investigation early in the project
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Monitoring:
- Accurate collection and interpretation of pressure data measured in existing wells to provide information about overpressure
- Doing new pressure measurements in existing wells to provide information about overpressure
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Corrective measures:
- Remediation plan to understand, correct and adapt production or injection and if needed, adapt surface facilities
More information is available on the project deliverable (link), or navigate on the online version.
