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Volund Field; development of an Eocene sandstone injection complex, offshore Norway

Anne M. Schwab, Eric W. Jameson and Ann Townsley
Volund Field; development of an Eocene sandstone injection complex, offshore Norway (in Tertiary deep-marine reservoirs of the North Sea region, T. McKie (editor), Phil T. S. Rose (editor), Adrian J. Hartley (editor), D. W. Jones (editor) and T. L. Armstrong (editor))
Special Publication - Geological Society of London (February 2014) 403 (1): 247-260

Abstract

The Volund Field lies in the Norwegian sector of the North Sea (Quad 24/9). This field produces from a "classic" large-scale sandstone injection complex located in Lower Eocene strata. The sandstone reservoir has been injected into the lower permeability surrounding mudstones of the Sele and Balder formations and Hordaland Group to create an "intrusive trap". The Volund Field consists of a deeper central unit of stacked sandstone sills, surrounded by shallower, steeper-dipping injected sandstone dykes, which make excellent reservoirs with consistently high porosity and permeability. Many of the steeply-dipping injected dykes appear to have excellent connectivity from the water leg through the oil leg and into the gas cap. The complex was identified on seismic data that exhibit a Class 3 amplitude versus offset (AVO) signature on the far-offset stack reflection seismic volume. The seismic data have been used to successfully locate horizontal production wells. Volund seismic geobodies have been extracted and incorporated into the reservoir geomodel to determine the geometry of the injectite features and to populate sands within the injection complex. Volund Field (estimated mean gross resource of 54 mmboe (million barrels oil equivalent)) is producing oil from four horizontal branches (end December 2012), with one water injector well, and has a common oil-water contact and gas-oil contact.


ISSN: 0305-8719
EISSN: 2041-4927
Coden: GSLSBW
Serial Title: Special Publication - Geological Society of London
Serial Volume: 403
Serial Issue: 1
Title: Volund Field; development of an Eocene sandstone injection complex, offshore Norway
Title: Tertiary deep-marine reservoirs of the North Sea region
Author(s): Schwab, Anne M.Jameson, Eric W.Townsley, Ann
Author(s): McKie, T.editor
Author(s): Rose, Phil T. S.editor
Author(s): Hartley, Adrian J.editor
Author(s): Jones, D. W.editor
Author(s): Armstrong, T. L.editor
Affiliation: Marathon Oil Corporation, Aberdeen, United Kingdom
Pages: 247-260
Published: 20140205
Text Language: English
Publisher: Geological Society of London, London, United Kingdom
References: 26
Accession Number: 2014-016827
Categories: Economic geology, geology of energy sourcesApplied geophysics
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. incl. sects., strat. col., geol. sketch maps
N59°19'00" - N59°19'00", E01°49'60" - E01°49'60"
Source Note: Online First
Country of Publication: United Kingdom
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute. Reference includes data from The Geological Society, London, London, United Kingdom
Update Code: 201411
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