Heavy-Mineral Stratigraphy of the Clair Group (Devonian– Carboniferous) in the Clair Field, West of Shetland, U.K.
Published:January 01, 2010
Andrew Morton, Claire Hallsworth, John Kunka, Ewan Laws, Simon Payne, Dave Walder, 2010. "Heavy-Mineral Stratigraphy of the Clair Group (Devonian– Carboniferous) in the Clair Field, West of Shetland, U.K.", Application of Modern Stratigraphic Techniques: Theory and Case Histories, Kenneth T. Ratcliffe, Brian A. Zaitlin
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The Devonian–Carboniferous Clair Group reservoir succession in the Clair Field, located west of Shetland on the UK continental shelf, comprises over 1000 m of clastic sediment deposited in a range of fluvial, lacustrine, and eolian environments. Owing to the unfavorable depositional conditions, palynomorphs and microfossils are almost entirely absent, precluding development of a high-resolution biostratigraphic framework for reservoir correlation. An alternative approach to reservoir subdivision and correlation is therefore necessary in order to establish a viable reservoir model prior to field development. Heavy-mineral analysis, which subdivides clastic successions on the basis of changes in provenance and sediment transport history,...
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Application of Modern Stratigraphic Techniques: Theory and Case Histories
Application of Modern Stratigraphic Techniques: Theory and Case Histories - Much has been written and debated about the various methodologies applied to modern stratigraphic analysis and the ever increasing complexity of terminologies. However, there exist numerous stratigraphic techniques that are reliant upon precise, quantitative, reproducible data, rather than qualitative interpretive stratigraphic methodologies. Such stratigraphic techniques are applied in an entirely pragmatic non-biased manner within the petroleum industry to provide enhanced stratigraphic understanding of petroleum systems. The petroleum industry is a key driver behind the development of new stratigraphic techniques and a major provider of new stratigraphic data, which has resulted in several of these new techniques having been developed as a requirement to the industry. Furthermore, because techniques, such as isotope chemostratigraphy, elemental chemostratigraphy, magnetic susceptibility stratigraphy, numerical biostratigraphy and heavy mineral stratigraphy are based around precise, quantified and reproducible analytical data, they provide an independent means to test the more interpretive stratigraphic methodologies. This volume attempts an overview of stratigraphic methodologies, but largely focuses on data-generative stratigraphic techniques such as chemostratigraphy, magnetic susceptibility stratigraphy, numerical biostratigraphy and heavy mineral stratigraphy. Where appropriate, each paper discusses data generation methods including sample preparation and analytical methods as well outlining data interpretation methods. This is followed by case histories that demonstrate how those data are used to resolve stratigraphic problems, commonly using material derived from petroleum basins around the World.