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Small-scale diagenetic facies heterogeneity controls porosity and permeability pattern in reservoir sandstones

Heidsiek, Matthias; Butscher, Christoph; Blum, Philipp; Fischer, Cornelius

The fluvial-aeolian Upper Rotliegend sandstones from the Bebertal outcrop (Flechtingen High, Germany) are the famous reservoir analog for the deeply buried Upper Rotliegend gas reservoirs of the Southern Permian Basin. While most diagenetic and reservoir quality investigations are conducted on a meter scale, there is an emerging consensus that significant reservoir heterogeneity is inherited from diagenetic complexity at smaller scales. In this study, we utilize information about diagenetic products and processes at the pore- and plug-scale and analyze their impact on the heterogeneity of porosity, permeability, and cement patterns. Eodiagenetic poikilitic calcite cements, illite/iron oxide grain coatings, and the amount of infiltrated clay are responsible for mm- to cm-scale reservoir heterogeneities in the Parchim formation of the Upper Rotliegend sandstones. Using the Petrel E&P software platform, spatial fluctuations and spatial variations of permeability, porosity, and calcite cements are modeled and compared, offering opportunities for predicting small-scale reservoir rock properties based on diagenetic constraints.

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Verlagsausgabe §
DOI: 10.5445/IR/1000125535
Veröffentlicht am 30.10.2020
DOI: 10.1007/s12665-020-09168-z
Zitationen: 1
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Angewandte Geowissenschaften (AGW)
Publikationstyp Zeitschriftenaufsatz
Publikationsmonat/-jahr 09.2020
Sprache Englisch
Identifikator ISSN: 1866-6280, 1866-6299
KITopen-ID: 1000125535
Erschienen in Environmental earth sciences
Band 79
Heft 18
Seiten Art. Nr.: 425
Vorab online veröffentlicht am 15.09.2020
Schlagwörter Sandstone diagenesis, Calcite cement, Reservoir quality, High-resolution diagenetic modeling, Upper Rotliegend sandstone
Nachgewiesen in Scopus
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