ملخص
Abstract
Murzuq Basin is located in south western of Libya. The theses represent a study of the concession (NC-174) area in Murzuq Basin. This theses consists of two major parts; the first part investigates the geophysical seismic interpretation of the concession (NC-174) area including the Elephant field area, and as a result the pressure of Elephant oil field (western part of (NC-174) concession) is not superior so that it needs to inject water interested in the oil structure. Therefore, the second part of theses provides better understanding of the aquifers study (Aquifers volume, extensions, isolation) within the concession (NC-174) area to be used for water injection of the oil reservoir of Elephant filed. The water injection method used in oil production is where water is injected back into the reservoir usually to increase pressure and thereby stimulate production. In this theses most visible horizons are interpreted by charisma software focused on the all aquifer water and (seal, reservoir, basement) formations, and the seismic interpretation includes all of the available 2-D and 3-D seismic data.The geophysical seismic interpretation method is used to cover the concession (NC-174) area, concentrates on the Elephant oil field using all the available seismic versions datasets. The main result of this thesis indicates that the Ordovician sandstone (Mamuniyat formation) is high-quality oil reservoir in the Elephant oil field and can be represent a saline aquifer outside the Elephant oil field structure (scorpion area_ southeast of Elephant oil structure ) either to the northern or southern hanging wall unless the main faults are not sealing. The Mamuniyat reservoirs sourced by hot shales of the Lower Silurian Tanezzuft Formation.