Saucer-shaped sandstone intrusions: a global deepwater play?

Mads Huuse, Denis Bureau, Andrew Hurst, David Suek

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Large-scale sandstone intrusions are well known from the North Sea and the Faroe-Shetland basins. Similar examples have recently been documented using high-quality 3D seismic volumes from sedimentary basins in the Barents Sea and the Lower Congo Basin. A previously unknown set of sandstone intrusions was recently discovered using high-quality 3D seismic data from the northern San Joaquin Valley. In all cases the host sediments are deepwater mudstones, ranging from siliceous oozes to hemipelagic muds. Some of the host mudstones are polygonally faulted and some are not. Together, these examples demonstrate that sandstone intrusions are important components of deepwater successions across the globe. In the North Sea, the intrusions form high-quality oil reservoirs with volumes of tens to hundreds of million cubic metres, porosities of 0.2-0.4 and permeabilities of several Darcy. We conclude that sandstone intrusions are likely to be an overlooked and potentially prolific play in many deepwater successions around the world.
Original languageEnglish
Title of host publication76th European Association of Geoscientists and Engineers Conference and Exhibition 2014: Experience the Energy - Incorporating SPE EUROPEC 2014
Pages3825-3829
Number of pages5
Publication statusPublished - Jun 2014

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