Jubarte PRM: The first deepwater optical permanent reservoir monitoring system
Structured case brief
Jubarte PRM
Map water-front movement and reservoir connectivity accurately enough to support well placement in a deepwater heavy-oil field.
- Location
- Campos Basin, Brazil
- Monitoring system
- 4C Optical Fiber (OptoSeis)
- Repeat interval
- 1 year
- Repeatability
- 4%
- Main signal driver
- Saturation & Pressure
- Water depth
- 1350m
The 4D interpretation identified water encroachment and supported repositioning a production well.
Permanent monitoring is most defensible where repeatability materially changes high-value development or intervention decisions.
Jubarte PRM: The first deepwater optical permanent reservoir monitoring system
The record points directly to a technical publication DOI landing page and is suitable as the strongest provenance tier in the current dataset.
technical publication · reviewed 2026-08-03
Open source recordThe case links permanent-receiver repeatability to water-front interpretation and one documented field-development decision.
- The operational and economic case may not transfer to assets with lower decision value or shorter surveillance horizons.
- Performance from a permanent optical installation should not be assumed for redeployed streamer, OBN, or lower-density systems.
Decision context
Jubarte is a deepwater heavy-oil field in Brazil’s Campos Basin. Complex connectivity and a moving water front created a direct development risk: a well placed from the static model alone could encounter water earlier than expected.
Monitoring approach
Petrobras installed a permanent fiber-optic reservoir-monitoring system on the seabed. Keeping the receiver geometry fixed reduced a major source of non-repeatability and enabled faster repeat surveys than conventional redeployment.
Evidence
- Repeatability: The permanent installation produced a highly repeatable 4D signal, with the benchmark value maintained in the shared project dataset.
- Water-front imaging: Time-lapse interpretation mapped water movement in a setting where heavy oil and complex connectivity made the response difficult to predict from the reservoir model alone.
- Turnaround: The workflow supported a shorter interval between acquisition and an interpretable 4D volume.
Operational outcome
The interpretation showed water encroachment that was not sufficiently represented in the earlier model. The field team used this evidence to reposition a production well.
Transferable lesson
A permanent system should not be justified by repeatability alone. Its strongest case is where better repeatability shortens the decision loop and protects a high-value well, injection, or intervention decision.
Community review
What supports this interpretation, and what limits transfer?
This section preserves technical feedback, counterexamples, and deployment lessons from the issue-backed forum. Maintainers may synthesize the strongest points into the two cards below.
Supporting signals
Maintainer synthesis- Permanent optical sensing delivered exceptional repeatability for a deepwater monitoring program.
- The case shows clear operational value because 4D interpretation changed a field-development decision.
Limits and counterexamples
Maintainer synthesis- The economics may be harder to defend on assets without high intervention value.
- Results from a premium permanent installation may not transfer cleanly to lower-budget repeat surveys.
4D Forum
Use one shared thread for technical observations, counterexamples, deployment lessons, and evidence-backed corrections.