Although first reported in the 1930s, there has been an acceleration in theoretical and experimental developments since the early 1990s when Thompson & Gist (1993) presented field data and arguments suggesting that the seismoelectric method can be used to image porous, permeable hydrocarbon reservoirs. Most of the follow-up studies have utilized low energy sources and targeted the detection of high permeability formations. Results of these near-surface field experiments have been mixed – offering encouraging evidence of the ability to image shallow interfaces at depths less than 20 m but also the recognition that it is a challenge to identify interfacial signals in the presence of ambient noise and coseismic effects that are commonly much stronger.