OTC 24791 - Riser Integrity Monitoring
Riser Integrity Monitoring for Offshore Fields
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All the structural elements which make up offshore fields are by nature submitted to harsh environmental constraints: seabed to surface liaisons, export lines, mooring systems and all oil & gas operators must keep pace with the technological challenges posed by deeper water depths and increasingly severe weather environments.
The top priority is threefold:
- to mitigate human and technical risks
- to protect valuable assets and to limit damages
- to promote safety and sustainable development.
A real time surveillance of structural integrity is an absolute necessity in order to keep under control the overall good condition of the field infrastructure. It really allows to improve asset management and to intervene in case of emergency. The primary objective is to monitor and predict the behavior of the bottom to surface liaison in order to anticipate excessive wear and fatigue as well as overstress, hence the development of original solutions: Asset Integrity is a key trend to optimize lifecycle of fields.
This paper focuses on Riser Integrity Monitoring, and most particularly on reliable and cutting edge technological solutions used to measure the static and dynamic loads imposed to the various kind of Risers to anticipate structural degradation but also to detect structural ruptures. The first is known as a Vibrating Wire Gauge (VWG) for the monitoring of various types of rigid risers. The second technology uses the Acoustic Emission to monitor the armour wires rupture in flexible pipes.
A real time surveillance of structural integrity is an absolute necessity in order to keep under control the overall good condition of the field infrastructure.