Abstract
Because of the implications of shallow gas accumulations to drilling and the integrity of platform foundations, it is important to determine whether gas accumulations can be considered as effectively static, unchanging for the duration of offshore operations, or dynamic. Shallow gas is frequently seen in association with seabed features, such as mud lumps, gas domes and pockmarks. These are considered to have been caused by the escape of gas through the seabed, consequently it can be implied that gas has migrated to, and through, the seabed. This indicates that shallow gas is not static, but it does not suggest a time-scale over which migration occurs. Is shallow gas mobile on a geological or a human time-scale?
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© 1990 Society for Underwater Technology
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Judd, A.G. (1990). Shallow Gas and Gas Seepages: A Dynamic Process?. In: Ardus, D.A., Green, C.D. (eds) Safety in Offshore Drilling. Advances in Underwater Technology, Ocean Science and Offshore Engineering, vol 25. Springer, Dordrecht. https://doi.org/10.1007/978-94-009-0669-3_2
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DOI: https://doi.org/10.1007/978-94-009-0669-3_2
Publisher Name: Springer, Dordrecht
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