A master's thesis at the college of science at the University of Basrah examined the properties of naturally fractionated carbonate reservoirs to form the supervisor in the northern Rumaila field, southern Iraq . The thesis presented by student Nour Al-Huda Qasim Abdul-Hussein aims to characterize and identify naturally occurring fractures within the supervisor formation using a multi-methodological approach that integrates analysis of core and thin sections, seismic data, well Image records, and conventional well Records. The letter included characterization and identification of naturally occurring fractures within the composition of the supervisor . The letter concluded that there are different types of natural fractures, such as open, filled, zigzag and supported fractures. The open type dominates the field, therefore the possibility of oil production of this composition is high. The analysis of the direction of fractures revealed that the north-west and South-East Directions have the largest percentage of fractures, which makes these areas suitable for drilling more wells. The letter recommended expanding the study area to get a better view of fractures within the field and studying fractures through data on increasing pressures and studying geological structures more broadly and indicating their impact on natural fractures.