Influence of Major Unconformities on the Heterogeneity of Reservoir Properties. Example of the Mishrif Formation of Qatar
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
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.