--> Abstract: The Use of Outcrop Analogues for Capturing and Analysing Multi-Scale Data Types: A Valuable Tool for Better Understanding Subsurface Reservoirs, by Simon Leary, Kevin Keogh, Allard W. Martinius, Stuart Gowland, Andrew M. Taylor, and Ingunn Viste; #90082 (2008)

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The Use of Outcrop Analogues for Capturing and Analysing Multi-Scale Data Types: A Valuable Tool for Better Understanding Subsurface Reservoirs

Simon Leary1, Kevin Keogh2, Allard W. Martinius1, Stuart Gowland3, Andrew M. Taylor3, and Ingunn Viste4
1StatoilHydro ASA, Trondheim, Norway
2StatoilHydro ASA, Stavanger, Norway
3Ichron Limited, Northwich, United Kingdom
4University of Bergen, Bergen, Norway

The Upper Jurassic (Kimmeridgian-Tithonian) Lourinhã Formation of the Lusitanian Basin, Portugal, contains over one thousand meters of stratigraphy. Excellent outcrops allow collection of field data to assist in understanding the fluvial-dominated Statfjord Formation in the Tampen Spur area of the Norwegian North Sea. Three years of outcrop data collection has produced a substantial database, the analysis of which can be used to more accurately model the variations in reservoir properties in these types of reservoirs.

A field data collection methodology has been devised to allow systematic recording of both qualitative and quantitative sand-body observations and interpretations that can be more easily utilised in multi-scale modelling studies. These scaled models are used to increase our understanding of the lithofacies, internal architectural elements and associated heterogeneities within fluvial sandbodies that are often not represented within field-scale subsurface modelling studies. Examples of such data includes 1:10 and 1:50 scale field logs, channel body scale correlation (10s of metres) and channel belt scale dimensional properties. All scales of data have been loaded into an ODM3 database for presentation and database management, and to a SpotFire database where statistical analyses of the various data types were undertaken. Traditional field data has been supplemented with the collection of LiDAR data and the incorporation of Digital Terrain Models.

The ‘Pore-to-Field’ modelling concept has been utilised, creating multi-scale representations of these outcrop data. SBED™ and SBEDStudio™ have been used to model lithofacies and facies association scale data, which have then been incorporated into field-scale reservoir models for direct comparison to the subsurface modelling of the Statfjord Formation.

AAPG International Conference and Exhibition, Cape Town, South Africa 2008 © AAPG Search and Discovery