Full text loading...
-
Characterization of Fault Zones for Reservoir Modeling - An Example from the Illizi Basin, Algeria
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, Fourth International Conference on Fault and Top Seals, Sep 2015, cp-462-00023
- ISBN: 978-94-6282-164-4
Abstract
A fault seal analysis was performed in the south-eastern area of the Illizi Basin (Algeria) as an aid to improve reservoir management of this structurally complex region. The objective was to characterize the sealing mechanism, apply modern techniques to evaluate the dynamic behavior of faults in fault-seal analysis, and show how pressure data can be used for calibration with relatively limited subsurface data. The fault sealing analysis was conducted for each of the principal faults and reservoirs in the studied area. The analysis was based on detailed 3D seismic mapping at multiple stratigraphic levels. Intermediate horizons, including non-mapped sands and reservoir bases, were constructed based on the stratigraphy observed in well logs. Data from the already drilled exploration wells provided direct constraints on the stratigraphy in each fault block analyzed. The results of our study show the relevance of this kind of integrated analysis and give a more precise idea of the sealing capacity of faults in the study area of Illizi Basin of Algeria. The methodology could be confidently applied to other prospects/leads within the area to reduce the risk associated to the fault retention.