الفهرس 
STRATIGRAPHYOnly 14 pages are availabe for public view
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Abstract
INTRODUCTION
The increasing demand for the petroleum pro11ucts and the
discovery <)f large amounts of hydrocarbons in the subsurface led
to a continuous development in the techniquee used for
understanding the subsurface geology of the earth-s t::rust,
This work deals with the geophysical methods of etudying
ro(.:ks, based on the existence of some relationships between a
eertain physical property of the rock and its different
mineralogical, sedimentologic,”tl structura 1 and fluid properties.
The direct examination and the application of various
laboratory techniques on rock samples is considered the most
appropriate method for studying the petrophyeical properties. The
collection of eubsurface cores is an expensive process, taking into
consideration that only few horizons can be eored in a certain
sequence. Most of the availabl~ rock samples are in the form of
cuttings which cannot give reliable results specially those
describing the 13t.orage <:;apacity of a rock, This lead to development
of various logging techniques in order to measure the petrophysical
and t.he petrogr.~phical parameters based on some physical properties
of the drilled rock sequence. These well logging techniquel3 provide
various data which can be further processed for the qu.~litativ~ and
qu~ntitative evaluation of lithology, porosity and saturation. Well
logging methods also have t.he advantage of enabling accurate
detet·mination of lithostratigraphic bound.’3.ries.
One of the targets of thie study is the reinterpretation
of lithology using different electric logs ·Of eigtheen wells and
the correlation of the obtained results with the available data
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