Title
The Permian Rotliegend reservoir architecture of the Dutch Koekoekspolder geothermal doublet
Author
Mijnlieff, H.F.
Bloemsma, M.R.
Donselaar, M.E.
Henares, S.
Redjosentono, A.E.
Veldkamp, J.G.
Weltje, G.J.
Publication year
2014
Abstract
The Dutch Koekoekspolder geothermal doublet was drilled in 2011 targeting the Permian Rotliegendreservoir. The encountered reservoir properties were less favorable than expected pre-drill. Post-drill integrated evaluation of vintage data and the new data from the geothermal wells resulted in a refined depositional model of the area. The Rotliegend sediments comprise predominantly horizontally, bimodally laminated fine to coarse grained red sandstones. These sediments were deposited on an aeolian sandflat. On this sandflat in the relative low-lying areas, coinciding with palaeo-lows of the pre-Permian palaeotopgraphy gypscretes were formed. These gypscretes were periodically exhumed and (partly) eroded providing gypsum grains which were subsequently incorporated in the predominant quartz rich sand sediments on the sandflat forming the typical bimodally laminated Aeolian deposits. The gypscretes are now present as pervasively anhydrite cemented horizons haphazardly vertically distributed.
Subject
Earth / Environmental
AGEA - Advisory Group for Economic Affairs
ELSS - Earth, Life and Social Sciences
Geological Survey Netherlands
Geosciences
Energy / Geological Survey Netherlands
Drills
Geothermal wells
Quartz
Sediments
Aeolian deposits
Coarse-grained
Depositional models
Integrated evaluation
Red sandstone
Reservoir architecture
Reservoir property
Vintage data
Petroleum reservoir evaluation
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http://resolver.tudelft.nl/uuid:a7fd84fb-76f6-420a-8a8f-e876cbd6aa0f
TNO identifier
505063
Source
76th Eage Conference and Exhibition, 16-19 June 2014, Amsterdam, The Netherlands, 1-5
Document type
conference paper