Reservoir Characterization of the Early Cretaceous Sarmord and Garagu Formations from Atrush-1 and Mangesh-1 Wells, Kurdistan Region, Iraq

作     者：Ayad N. F. Edilbi Wrya J. Mamaseni Mahdi Kh. Aswad Bahroz Gh. Abdullah Falah Kh. Al-Jaboury Govand H. Sherwani Nadhir Al-Ansari Ayad N. F. Edilbi;Wrya J. Mamaseni;Mahdi Kh. Aswad;Bahroz Gh. Abdullah;Falah Kh. Al-Jaboury;Govand H. Sherwani;Nadhir Al-Ansari

作者机构：Department of Petroleum Geosciences Faculty of Science Soran University Soran Kurdistan Region Iraq Geology Department College of Science Salahaddin University Erbil Kurdistan Region Iraq Geology Department College of Science University of Duhok Duhok Kurdistan Region Iraq Department of Petroleum Engineering College of Engineering American University of Kurdistan Sulaimaniya Kurdistan Region Iraq Petroleum Engineering Department Knowledge University Erbil Kurdistan Region Iraq Department of Civil Engineering Cihan University-Erbil Erbil Kurdistan Region Iraq Lulea University of Technology Lulea Sweden 

出 版 物：《Open Journal of Geology》 (地质学期刊（英文）)

年 卷 期：2021年第11卷第10期

页      面：509-524页

学科分类：081803[工学-地质工程] 08[工学] 0818[工学-地质资源与地质工程] 

主　　题：Sarmord Formation Garagu Formation Reservoir Characterization Hydrocarbons Saturation Net Pay 

摘      要：Petrophysical properties of the Early Cretaceous Sarmord and Garagu formations from the Atrush and Sarsang Blocks in the Kurdistan Region are studied. These formations are generally composed of limestones and dolomitic limestones interbedded with thin to medium layers of yellowish-gray marl (calcareous mudstone). The current study shows that the average shale volume in the Sarmord and Garage formations is between 16% and 20%. In Atrush-1 Well, the average porosity ratio of the Sarmord and Garagu formations is fair to good (15% and 11%, respectively). However, in Mangesh-1 Well, the porosity value is poor;it is around 4% on average. Generally, most of the hydrocarbons that have been observed within the pore spaces are residual oil type in Atrush-1 Well and movable hydrocarbon type in Mangesh-1 Well. In Atrush-1 Well, out of 362 m thickness of both formations, only 180 m is considered to be a pay zone;whereas, the pay zone is just around 8.0 m thick out of 347 m of the total thickness. According to the calculated porosity values, the Garagu and Sarmord formations are not considered as good reservoirs in the studied wells, with the exception of Atrush-1 Well where the Sarmord Formation has fair potential reservoir characteristics.