Petrophysics and Reservoir Properties of the Turonian-Coniacian Bireno and Douleb Carbonate Members in Northern-Central Tunisia
Résumé
The study of Turonian-Coniacian reservoir analogues well outcropping in Jebel Serj-Bargou in northern-central Tunisia, using a multidisplinary approach, has led to establish a detailed layering within these heterogeneous reservoir rocks. Some of the selected layers show a relatively high reservoir potential. This used approach which could be used as a guide for further studies on subsurface petroleum systems is based on sedimentological and petrophysical techniques using geophysical parameters. The conducted analyses mainly consist of measurements of the rocks density, P and S wave velocities, thermal conductivity, and porosity. All the analyses have led to encouraging results showing that the lower part of the Coniacian Douleb carbonates constitute the best layers in terms of reservoir potential. In addition to its reservoir potential, the Douleb Member locally includes organic-rich bituminous limestones that could provide supplementary source rocks and additional possibilities for the petroleum system in this area.