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==Deep-water marine reservoirs can be prolific reservoirs==

==Deep-water marine reservoirs can be prolific reservoirs==

Deep-water marine sandstones can be prolific reservoirs where they occur. They commonly contain oil fields as a result of the interfingering of gravity-flow sandstones with marine oil-prone source rocks. An example is the interfingering of the Upper Jurassic submarine fans of the UK North Sea with the Kimmeridge Clay Formation source rock for the province, e.g., the Magnus and Claymore fields (Shepherd et al., 1990; Harker et al., 1991).

Deep-water marine sandstones can be prolific reservoirs where they occur. They commonly contain oil fields as a result of the interfingering of gravity-flow sandstones with marine oil-prone source rocks. An example is the interfingering of the Upper Jurassic submarine fans of the UK North Sea with the Kimmeridge Clay Formation source rock for the province, e.g., the Magnus and Claymore fields.<ref>Shepherd, M., C. J. Kearney, and J. H. Milne, 1990, [http://archives.datapages.com/data/specpubs/fieldst3/data/a016/a016/0001/0050/0095.htm Magnus field], in E. A. Beaumont and N. H. Foster, eds., Structural traps: II. Traps associated with tectonic faulting: Treatise of petroleum geology of oil and gas fields: Tulsa, AAPG, p. 95–125.</ref><ref>Harker, S. D., S. C. H. Green, and R. S. Romani, 1991, The Claymore field, Block 14/19, UK North Sea, in I. L. Abbots, ed., United Kingdom oil and gas fields, 25 years commemorative volume: Geological Society (London) Memoir 14, p. 269–278.</ref>

The reservoir quality of deep-marine sandstones is among the best of the various sedimentary environments that comprise reservoirs. Porosities, permeabilities, and net-to-gross ratios are typically high. Under favorable conditions, deep-water sandstones may be ponded and stacked vertically into very thick, sand-rich intervals (Table 1). These reservoirs are very profitable as they can be produced by a small number of wells at very high rates.<ref name=WeimerandSlatt />

The reservoir quality of deep-marine sandstones is among the best of the various sedimentary environments that comprise reservoirs. Porosities, permeabilities, and net-to-gross ratios are typically high. Under favorable conditions, deep-water sandstones may be ponded and stacked vertically into very thick, sand-rich intervals (Table 1). These reservoirs are very profitable as they can be produced by a small number of wells at very high rates.<ref name=WeimerandSlatt />