Print Email Facebook Twitter The Permian Rotliegend reservoir architecture of the Dutch Koekoekspolder geothermal doublet 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 / EnvironmentalAGEA - Advisory Group for Economic AffairsELSS - Earth, Life and Social SciencesGeological Survey NetherlandsGeosciencesEnergy / Geological Survey NetherlandsDrillsGeothermal wellsQuartzSedimentsAeolian depositsCoarse-grainedDepositional modelsIntegrated evaluationRed sandstoneReservoir architectureReservoir propertyVintage dataPetroleum reservoir evaluation To reference this document use: 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 Files To receive the publication files, please send an e-mail request to TNO Library.