الفهرس 
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Abstract
This study aims to explore the structural regime of Miocene rocks and to evaluate the reservoir characteristics of Belayim Formation in Belayim Land Oil Field, West Sinai, Egypt. The available data include thirty two seismic sections, subsurface data of ten wells (113 - 26, 112 - 46, 112 - 48B, BELL BAY - 4, 112 - 82, 113 - 81, 113 - 14, 113 - 10, 113 - 25, 112 - 27), as well as well logging data of five wells (113 - 26, 112 - 46, BELL BAY - 4, 112 - 82, 113 - 81) and core data of one well (BELL BAY - 4).
The structural analysis involves the construction of structure contour maps, in term of time and depth, on the tops of Belayim, South Gharib and Zeit formations which show three structural closures on the three tops as inferred from seismic data. These closures are dissected by faults of different trends. These faults constitute grabens, horsts and step-like structures. Statistical trend analysis of faults on tops of Belayim, South Gharib and Zeit formations reveals that the area is affected by Suez trend. The other trends such as Aqaba, East African, Najd, Syrian arc, and Tethyan are affected the area but with a decreasing order. The subsurface geological studies are achieved for Belayim, South Gharib and Zeit formations through constructing subsurface maps (isopach, sandstone isolith, shale isolith, and limestone Isolith, percentage maps, clastic percentage, non-clastic percentage, sand / shale ratio, and relief maps), Five correlation charts and structural cross sections, as well as, two panel diagrams are constructed to illustrate thickness variation, Lithofacies changes and structural elements that affected in the study area.
Petrophysical studies on the reservoir rocks play an important role in the discovery, evaluation and distribution of the productive zones. The petrophysical properties of rock depend mainly on depositional environment, mineralogy, geology and pore space framework.
The statistical analysis of the porosity and permeability in the core samples concluded that the Belayim Formation is a good reservoir. Studying the capillary pressure method is important in the determination of the irreducible water saturation in the samples and determined many other parameters for the reservoir rocks. Well log data are interpreted for estimating the clay volume, porosity, net pay thickness, water saturation, hydrocarbon saturation and oil in place.