“…The formation of gas chimneys and other vertical fluid flow anomalies is generally controlled by overpressure-induced hydrofracturing of overlying, low-permeability sediments (Judd and Hovland, 2007;Karstens and Berndt, 2015;Mountjoy et al, 2014). Other factors, such as faulting and deformation, lateral gas migration, formation-wide overpressure, and lithological heterogeneity may also play a role (Cartwright et al, 2007;Chenrai and Huuse, 2017;Karstens and Berndt, 2015;Nicoll, 2016;Seebeck et al, 2015). Determining how these factors interact may help us in understanding the formation history and location of gas chimneys and flares.…”