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Influence of Major Unconformities on the Heterogeneity of Reservoir Properties. Example of the Mishrif Formation of QatarGold Open Access

Authors: Deville de Periere Matthieu, Christophe Durlet, Emmanuelle Vennin, Bruno Caline, Laurent Lambert, Raphael Bourillot, Carine Maza, Emmanuelle Poli and Cécile Pabian-Goyheneche
Event name: GEO 2012
Session: Petroleum System Analysis
Publication date: 04 March 2012
Organisations: EAGE
Language: English
Info: Abstract, PDF ( 237.86Kb )

Shallow marine carbonates of the Mishrif Formation (Cenomanian) were deposited on a low energy platform, before a Mid-Turonian relative sea-level fall leading to the Top Mishrif Unconformity (TMU). Depositional environments vary from inner platform to very shallow bioclastic rudist-rich shoals. In the reservoir, porosity values are up to 35% and permeability is low (below 1mD) to moderate (up to 250mD). Microporosity may represent up to 98% of the global porosity.

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