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Fracture, VUG and Intercrystalline Porosity and Permeability Analysis from Well Logs of LIRTIM Oil Field, Iraq

Rotimi, Oluwatosin J. and Ojelola, Kayode Olugboyega and Pshtiwan, T. Jaf (2014) Fracture, VUG and Intercrystalline Porosity and Permeability Analysis from Well Logs of LIRTIM Oil Field, Iraq. International Journal of Engineering & Technology, 14 (4).

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Carbonate reservoir unarguably contributes over 50% of presently produced crude oil in the world today especially from the middle-eastern part of the world with appreciable amount of reserve estimate yet unexplored. Deposition, sedimentation, diagenesis and other geological features of carbonate rocks has been studied leading their classification into: mudstone, wackestone, packstone, grainstone, boundstone and crystalline carbonate rocks. These are all characterised by various features such as fractures and vugs which influences its petro-physical behaviour. The study of the main features of carbonate reservoir using Archie’s cementation exponent “m” is an acceptable method of verifying the geological features in the reservoir which actually contribute to rock fluid properties and other production attributes of the reservoir. This was verified for some reservoir using well log values for Lirtim oil field in Iraq. The dominating geological features of the field were verified from a graphical representation of the different data from field reservoir. The reservoirs used as case studies in the research were also classified into different carbonate rocks using a graphical plot of their permeability against porosity values. This result gives a clue of the textural and grain size characteristics as well as the effective pore sizes of the reservoir. This method of analysis makes it easier to evaluate the post diagenetic strength of the reservoir rocks and fluid hosting capability in view of recovering hydrocarbon in the area

Item Type: Article
Uncontrolled Keywords: carbonate, reservoir, petro-physical, diagenesis, fractures, vugs, porosity, permeability
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
T Technology > TP Chemical technology
Divisions: Faculty of Engineering, Science and Mathematics > School of Engineering Sciences
Depositing User: Mrs Patricia Nwokealisi
Date Deposited: 17 Nov 2017 11:40
Last Modified: 17 Nov 2017 11:40

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