*MA2 - Methane Emissions from Oil and Gas and Other Anthropogenic Systems

Methane emissions from plugged oil and gas wells (P-OGWs) in British Columbia are highly uncertain due to limited measurements. Using LiDAR surveys and controlled-release testing within a Monte Carlo framework, we estimated provincial methane emissions from P-OGWs. Our results highlight the importance of monitoring emissions and evaluating the performance of plugging – a key mitigation strategy.

Methane mitigation in the oil and gas sector remains a cost-effective opportunity for reducing near-term climate warming. To better understand emissions drivers, this study presents a spatial, temporal, and statistical analysis of Petrinex data across Western Canada to identify operational patterns, hotspots, and key factors associated with methane emissions.

We collected soil gas samples for geochemical analysis from a historical a former limestone quarry in Montréal repurposed as a waste disposal site. We derived a probabilistic function for each sample’s origin. These findings suggest leakage is primarily from thermogenic sources, including natural gas and geologic seeps, rather than waste.

Orphan oil and gas wells are non-producing wells without a responsible operator that can decommission and remediate them. To optimize decommissioning and remediation efforts, understanding which well attributes impact methane emissions is important. Thus, we quantify emissions using helicopter-based and ground-based measurements and conjunctively analyze them with well attributes.