--> Abstract: The Lourinha Fm, Lusitanian Basin, Portugal: Outcrop Analogue for Improved Reservoir Characterisation of the Statfjord Fm, Nor; #90063 (2007)

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The Lourinha Fm, Lusitanian Basin, Portugal: Outcrop Analogue for Improved Reservoir Characterisation of the Statfjord Fm, Norwegian North Sea

 

Keogh, Kevin J.1, Allard W. Martinius2, Andrew Taylor3, Stuart Gowland3, Simon Leary2, Carsten Elfenbein2, Kjetil Nordahl2, Eirik Vik2, Silje Berg2 (1) Statoil ASA, Stavanger, Norway (2) Statoil ASA, Trondheim, Norway (3) Ichron Ltd, Northwich, United Kingdom

 

Even with the extensive well log and core database available on the Norwegian continental shelf together with long production experience, predicting the occurrence and distribution of hydrocarbon bearing sands within the fluvial-dominated Statfjord Formation in the Tampen Spur area of the Norwegian North Sea is still a very difficult task. Current recovery from the Statfjord Fm on the majority of the Tampen fields is low and a contributing factor to this is an incomplete understanding of facies types & distribution and the potential correlatability away from well data. The use of outcrop analogues for studying the facies types, their relationships and stratigraphic development together with collecting geometrical and relational data for reservoir modelling input is a key tool for better understanding the subsurface Statfjord Fm reservoirs. The fluviatile, Upper Jurassic (Kimmeridgian) Lourinha Formation within the Lusitanian Basin of Portugal contains over one thousand meters of stratigraphy that is considered a good analogue for collecting such field data to assist in understanding the Statfjord Fm and also providing input data to reservoir modelling studies of the Tampen fields. This study is only in its infant stages but already a large amount of sedimentological, stratigraphic, biostratigraphic and geometrical data has been collected in the field and is in the process of being analysed and implemented. This paper aims to introduce the reader to the Lusitanian Basin of Portugal and problems of producing from the Statfjord Fm, outline the suitability of the Lourinha Fm as an outcrop analogue and its sedimentological and stratigraphic elements and present data and results collected to date. Finally, the paper will address how this outcrop analogue will be applied to the Statfjord Fm.

 

AAPG Search and Discover Article #90063©2007 AAPG Annual Convention, Long Beach, California