Semi-permanent Reservoir Monitoring with OBN.
Ocean bottom node (OBN) technology has been extended reservoir monitoring with the introduction of ZLoF. Designed with extended battery life and optical and acoustic communication systems for data download, ZLoF is a low-cost, reliable alternative to entrenched cabled permanent reservoir monitoring (PRM) systems in deep water. ZLoF has no cables or trenching, no ties to production facilities, small environmental impact, can be flexibly moved or expanded if development plans change and can be easily decommissioned. Deep water reservoir monitoring with nodes will have commercial benefits over cable based PRM systems by providing the same high quality 4D seismic data at lower cost.