GSN: Eni’s technology to monitor methane emissions

Eni has developed a proprietary, scalable and advanced digital solution for managing fugitive methane emissions: the Gas Sensor Node (GSN). 
The compact, autonomous and connected device is designed for monitoring point-source emissions and for continuous monitoring, as well as for quantification of leaks directly at source.  
It is estimated that, in the Oil & Gas sector, about 22% of total CH₄ emissions come from "fugitive" leaks generated mainly by valves, connections and pumps. The GSN makes a real contribution to identifying and eliminating possible losses. This technological innovation increases Eni's operational and environmental performance.

Featuring in-house patent-pending technology from Eni R&D, the GSN is the only remote single-point system capable of continuously monitoring and quantifying fugitive methane emissions directly at source. The device activates automatic alarms when the specific thresholds are exceeded. It is part of a suite that combines ATEX 0 certified hardware, cloud software for centralised data management and a proprietary quantification algorithm that transforms the measured concentration into flowrates (ml/min).

• It ensures operational efficiency: reduces monitoring costs compared to manual inspections, enables predictive maintenance and cuts plant downtime. 
• It helps to ensure environmental compliance: provides quantified and accurate data for LDAR (Leak Detection and Repair) campaigns, facilitates prioritisation based on the severity of the losses, aligns with OGMP 2.0 standards and the EU Methane Regulation, limiting the risk and costs of non-conformity. 

The Gas Sensor Node can be used in onshore and offshore plants, including ATEX 0 environments, in complex operational contexts, with point-source and intermittent emissions.

With the GSN, Eni is not just complying with environmental regulations, but offers proactive and scalable solutions. It's a concrete example of how digitisation and proprietary research can help transform a potential environmental issue into an opportunity for operational improvement and greater sustainability.