Abstract This study covers the Fields producting from the Gialo Formation a reservoir which is composed of Limestone and Dolomitic-Limestone and consists mainly of highly altered Nummulitic Packstone. This study was achieved through three parts of study including a petrographic study, petrophysical study of reservoir properties from core analysis and borehole logs. The general geological framework was obtained from petrographical study of thirty six thin sections, 129 representative core plug data and logs from 5 different wells are utilized to better understanding the petrophysical framework of the formation. The plots correlating petrophsical parameters and the frequency histograms suggested the presence of distinctive reservoir trends. These discriminations were also represented in Winland porosity- permeability cross plots resulted in clusters for different port-size that are responsible for different flow characteristics. Linear and multiple regression were used for the study of each unit. The permeability models were constructed and their reliabilies were compared by the regression coefficients for predictions in un-cored well. The combination of all data revealed the worst ranked reservoir quality corresponded to moldic and intergranular pore types, which occurred mainly in the Bioclastic Wackstone facies. The highest ranked reservoir quality corresponded to intragranular and intergranular which occurred mainly in the Nummulitic Packstone Facies.
وردة الشوشان (2010)

أجريت الدراسة على رمال السليكا الواقعة بمنطقة الدراسة جنوب شرق نالوت لغرض تقيمها اقتصاديا لصناعة الزجاج . حيث كان اجمالى العينات المأخوذة من منطقة الدراسة 30 عينة أخذت من خمس مناطق شملتها الدراسة الحقلية بالموقع المذكور. وشملت الدراسة المعملية الوصف الصخري ، التحليل المنخلي للعينات المدروسة ،ودراسة التركيب المعدني لشرائح صخرية بواسطة المجهر المستقطب لغرض الدراسة البتروجرافية ولعينات رملية بواسطة حيود الأشعة السنية (XRD). هذا وشملت الدراسة التحاليل الكيميائية للعينات الرملية المدروسة لمعرفة تراكيز العناصر الاساسيةبواسطة جهاز بالبث الطيفي البلازمي ICP) ) كما تم فصل المعادن الثقيلة. وبينت نتائج التحليل المنخلي بأن الشكل الحبيبي لمعظم العينات مستدير إلى شبه مستدير وتصنيفها جيد. وأثبتت نتائج التحليل المعدني بجهاز حيود الأشعة السنية تواجد معدن الكوارتز مع كمية قليلة من اكاسيد الحديد ،وكان متوسط المعادن الثقيلة في العينات 0.3% .هذا و أظهرت دراسة الشرائح الصخرية، عدد من المعادن الثقيلة من ضمنها التورمالين والزركون وبينت نتائج البث الطيفي البلازمي نسبة مجموعة اكاسيد منها : اكاسيد الصوديوم (Na2O3) وأكسيد الالومنيوم((Al2O3 واكاسيد الحديد((Fe2O3 . وبيت التحاليل الكيميائية إن نسبة السليكا عالية في العينات تصل ( 97.70 % ) ونسبة الرطوبة منخفضةلاتتجاوز 2%، وبالتالي تعطى هذه النتائج قيمة اقتصادية جيدة لهذه الرمال . وخلصت كل هذه النتائج على إمكانية قيام صناعات على هذه الرمال مثل صناعة الزجاج الزجاج وصناعات مواد البناء المختلفة والطلاء وورق الصنفرة.
سمية مسعود على عبدو (2009)

Abstract Normally the study and investigated of earth material from the view of their uses as embankment and backfill material has a great importance in earth woks. This research concerns the assessment of earth masses and their properties which related embankment and backfill suitability as well as providing a mixing methods to upgrade the unsuitable within the accepted standards. The objectives of this research could be briefed by the investigation of earth masses along the study area which is governed by the distribution of superficial deposits comprehensive laboratory testing of soil samples molding Andes properties classification testing proctor and California bearing ratio recognition of suit able and non suit able backfill soil enhancement of unsuitable soil by mixing with other suitable soil such as quarry dust provided by nearby quarry correlation analysis and economic feasibility the study area is located in east of Tripoli from Tajoura to Misurata . This study manly concluded that as long as the poorly graded soil (A3) is difficult to be compacted according to the engineering properties of such soil are enhanced certainly by mixing with good sailable materials such as quarry dust. This research also conduced that the compaction properties will be enhanced by mixing where the optimum moister content is needed at the increase of maximum dry density. This research provides procedure of mixing design and recommendations for the mixing to achieve better results.
عبد السلام محمد بحرون (2011)