Petrological and Sedimentary Study of Shiranish Formation of Upper Cretaceous in Sazaba Oil Fields Region in the North East of Syria

Shiranish formation in Sazaba Oil fields region had been divided by Petrology study and well Logs measurements to three major members (lower – middle – upper). Then these members have been divided to lithostratigraphic units and subunits. This study showed that the lower member is formed of clayey - limestone rocks rich in planktonic foraminifera and glaconitic sand. The middle member consists of organic limestone facies, dolomitic-limestone, sometimes clayey - limestone rocks with crystals of pyrite and glaconitic sand. Organic- limestone rocks and detrital limestone are predominant in the upper member interbeded by dolomitic-limestone and rare clayey – limestone. This facies contains pelagic and planktonic foraminifera. The role of diagenes phenomenon is evident on Shiranish’s facies through: dolomitization according to burial and miksing processes. It is also clear through chemical compaction, mechanical compaction, cemenation, micretisation and silisification.

Petrological Study of Clay deposits of the Lower Cretaceous in Northern of South Palmyra Folding Zone-Syria

The Petrological study of Clay deposits belonging to the lower Cretaceous in the northern part of South Palmyra Folding Zone. Showed they were formed as a result of weathering processes of igneous rocks within Sedimentary continental climate is hot and wet conditions, and formed lateritic iron soil, followed by enrich, erosion and washing caused by watery agitate and re-replaced for short distances within valleys or grooves or local karst cavities, and later filled by crust erosion materials through the Cretaceous Sea transgression.

Sedimentary and Palaeogeographic Evolution of Kurachina Dolomite Formation in the Palmyrian Belt Zone in Syria

This research aims to study the sedimentary and palaeogeographic evolution of the Kurachina Dolomite Formation along Palmyrian belt zone. Studying this formation in its Northern and Southern parts has shown that it consists of two lithostratigraphic members, where each of them includes a series of lithological units. The petrological study of the components of these units shows that they are composed of four distinguished facies: Dolomitic limestones, clayey limestones, clays and anhydrites, pure or mixed, and deposited in repeated harmonic layers, gathered mostly in neutral sedimentary sequences. Dolomitic limestones are the most common and important facies, they are composed of micrite muds which have been subjected, in different degrees to synsedimentary or late dolomitisation processes through pumping or burial mechanisms. Dolomitisation intensity decreases downward the formation and increases laterally from the south to the north of the Palmyrian chain.

Petrology and Diagenesis Study of Rutbah Formation in Omar fields in Euphrates graben

Al Rutba Formation , bellowing to the upper Cretaceous, is one the main formation of the stratigraphical coumn of Euphrate Depression. It is importance becomes from that it can statute the principle petroleum reservoir in high member of the depression fields. Producing oil and the natural gas. The importance of this group is to be the main reservoir of oil in various fields of low oil producing natural gas. The present study is based on subsurface geological data, presented by cores, well logs and chemical results of the analyses laboratory.