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Abstract
Satur, N., and A. Hurst, 
st field, Norwegian North Sea, in A. Hurst and J. Cartwright, eds., Sand injectites: Implications for hydrocarbon exploration and production: AAPG Memoir 87, p.
DOI:10.1306/1209855M873269
2007 by The American Association of Petroleum Geologists.
Sand-injection Structures in Deep-water Sandstones from the Ty Formation (Paleocene), Sleipner 
st Field, Norwegian North Sea
st Field, Norwegian North Sea
Nicholas Satur,1 Andrew Hurst2
1Statoil ASA, N-4035 Stavanger, Norway
2Department of Geology and Petroleum Geology, University of Aberdeen, King's College, Aberdeen, United Kingdom
ACKNOWLEDGMENTS
We acknowledge the PL046 license (Statoil, Esso, Total, and Norsk Hydro) for providing permission to publish this study. Helga Hansen, Susan Str
mmen, Iain Prince, and Gitte Laursen have generously shared their earlier work on the Ty formation with us for which we are grateful. Comments from two anonymous reviewers were appreciated.
ABSTRACT
Evidence is presented for the widespread presence of sand injectites in mudstone-prone units in the deep-water sandstones of the Ty formation (Paleocene). Pressure communication throughout the field during production demonstrates that the laterally extensive shale layers in the reservoir are not barriers to cross-flow. Centimeter-scale sand injections are recognized in core, and sedimentary features commonly associated with meter-scale sand injectites are also identified. These remobilized sandstones are interpreted to facilitate fieldwide cross-flow, possibly augmented by subseismic-resolution faulting. Evidence for fault-induced or erosional dissection of the mudstone units is lacking. These injection features are similar in scale and appearance to sand injectites known from other reservoirs.
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