oa Minjur Sandstone Revisited: New Advances in Sequence Stratigraphy and Modeling in the Khashm-Al-Khalta Reference Area (Central Saudi Arabia)

In connection with the issues of CO2 geological storage in complex reservoirs, the Minjur Sandstone, in<br>outcrop in Central Saudi Arabia, was selected as a case study for modeling and simulating the spatial<br>distribution of sand bodies in a fluvial-deltaic system. As a first step, detailed sedimentologic mapping,<br>sequence stratigraphy and 3D geological modeling were performed in the area of inlet/outlet maximum<br>activity of the deltaic system.<br>Compared to the reference studies by Vaslet et al.(1983) and Le Nindre et al., (1987, 1990), the<br>vertical and lateral variations around the type section were studied in detail, and interpreted with<br>greater accuracy in terms of depositional features and sequence stratigraphy. This new survey was<br>specifically designed to collect 3D information for numerical modeling.