seasonal variability gas migration

When Should You be Concerned with a Gas Migration Investigation?

An often-overlooked statement in the Energy Resource Conservation Board (ERCB)/Alberta Energy Regulator (AER) suggests procedures for gas migration testing, as outlined in Directive 20, reads:  “Testing is to be done only in frost-free months. Periods immediately after a rainfall have to be avoided.” Temporal and seasonal changes can play a…

Methane is from a Deeper Thermogenic Source . . . Or, is it?

The carbon isotope signature of methane is often presented as the ‘silver bullet’ capable of identifying whether soil gas is from a deeper thermogenic source or produced by microbial processes. The stakes are high because failing to identify a gas migration (GM) issue can have serious environmental consequences…