Methane flux from flowback operations at a shale gas site

Jacob T. Shaw, Grant Allen, Joseph Pitt, Adil Shah, Shona Wilde, Laurence Stamford, , Hugo Ricketts, Paul I. Williams, Prudence Bateson, Patrick Barker, Ruth Purvis, David Lowry, Rebecca Fisher, James France, Max Coleman, Alastair C. Lewis, David A. Risk & Robert S. Ward
We report measurements of methane (CH4) mixing ratios and emission fluxes derived from sampling at a monitoring station at an exploratory shale gas extraction facility in Lancashire, England. Elevated ambient CH4 mixing ratios were recorded in January 2019 during a period of cold-venting associated with a nitrogen lift process at the facility. These processes are used to clear the well to stimulate flow of natural gas from the target shale. Estimates of CH4 flux during...
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