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Controls on the Distribution of Volcanism and Intra-Basaltic Sediments in the Cambo–Rosebank Region, West of ShetlandNormal access

Authors: J. Hardman, N. Schofield, S. Holford, A. Hartley, D. Jolley, S. Morse, J. Underhill, D. Watson and E. Zimmer
Event name: 81st EAGE Conference and Exhibition 2019
Session: Best of Petroleum Geoscience - Global Resource Development (In colloboration with the Geology Society of London)
Publication date: 03 June 2019
DOI: 10.3997/2214-4609.201900927
Organisations: EAGE
Language: English
Info: Extended abstract, PDF ( 1.09Mb )
Price: € 20

Summary:
In 2004 a major oil and gas discovery was made within the volcanic succession of the Faroe-Shetland Basin, the Rosebank Field. Unusually, the reservoir is a series of intra-basaltic fluvial to shallow marine intervals, giving rise to a new hydrocarbon play concept. The eruption of lavas within the Faroe-Shetland Basin is stratigraphically related to an extensive incised drainage network, providing a source of clean sand for the basin. However, despite the identification of an intra-lava incised drainage system running parallel to the Rosebank field, the extent of clean sands was unclear. This talk first details the controls on intra-basaltic sediments in the Cambo-Rosebank region of the Faroe-Shetland Basin, before forming a detailed stratigraphic link between the volcanic succession and dynamic changes in the evolution of the Faroe-Shetland Basin. Locally, volcanism is intimately linked with basin structure, with drainage systems adjacent to palaeohighs representing the thickest potential accumulations of intra-basaltic sediments. Regionally, the emplacement of the volcanic succession is intrinsically linked to uplift and subsidence of the Faroe-Shetland Basin. Prolonged uplift provided a source for clean sands in the south of the basin with further exploration potential existing in the underexplored northern Faroe-Shetland Basin.


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