Fibre optics monitor complex oil well
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Sensornet product story
Edited by the Engineeringtalk editorial team
Apr 24, 2008
Sensornet's permanent monitoring system provides the operator with continuous, real-time information at a fraction of the intervention costs.
Sensornet has installed the world's first distributed fibre optic monitoring system in a maximum reservoir contact (MRC) well for a major operator in the Middle East.
This is most complex well type ever monitored by a fibre optic DTS system, the system allows continuous monitoring of flow contribution from two side-tracks as well as the mother bore in the multilateral well.
Deployment in the 4420m well was achieved in less than two days, with the Sensornet SureSight cable passing through three permanent production packers and three Inflow Control Valves (ICV).
Three field testable fibre optic splice assemblies were installed with no degrading effects on the measurement performance.
The DTS system also allowed each of the ICVs to be individually tested, confirming the correct sequence of operation as well as circulation and isolation.
The system was continuously monitored, allowing testing and confirmation of completion accessories during all phases of the installation.
During well clean-up, fluid displacement could be easily monitored, reducing rig standby time while providing a high degree of confidence in the downhole conditions before moving off location.
Monitoring of zonal and lateral contribution is a key issue for the operator and by providing a permanently installed system the operator is now able to instantly act on phase and rate changes.
Sensornet's permanent monitoring system provides the operator with continuous, real-time information at a fraction of the intervention costs.
The ability to have constant access to this production information enables reservoir and production engineers to make significant improvements in field recovery, production rates and reductions in produced water".
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