PETROPHYSICAL CHARACTERISTICS OF THE MESSINIAN ABU MADI FORMATION IN THE BALTIM EAST AND NORTH FIELDS,OFFSHORE NILE DELTA, EGYPT
M. I. Abdel-Fattah*
* Geology Department, Faculty of Science, Suez Canal University, Ismailia, Egypt.
Baltim East and North fields in the offshore Nile Delta produce gas-condensate from accumulations located in the northern portion of the Abu Madi palaeovalley. The hydrocarbons in the Abu Madi Formation are present in sandstone reservoir units referred to as the Level III Main and Level III Lower. In this paper, the petrophysical characteristics of these reservoir units in the Baltim area are described using data from wireline logs (gamma-ray, density, neutron, sonic and resistivity) from fourteen wells and core data from one well. Results of wireline log and core analyses indicate that the Level III Main can subdivided into two sandstone-dominated intervals (both interpreted as sandbar deposits) separated by a shale-rich interval which is a partial barrier to fluid flow. Effective porosity is 9-18.5% and permeability 40-100 mD. Sandstones in the Level III Lower are interpreted as braided channel facies and have effective porosity of 12.5-22% and permeability of 100-500 mD.
Isoparametric maps for the Abu Madi Formation sandstone reservoirs based on log and core interpretations show the influence of depositional facies on petrophysical characteristics and can be used to assess possible targets for future exploration and development.
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