Effect of tubing design on optimum productionEffect of tubing design on optimum production Μεταπτυχιακή Διατριβή Master Thesis 2022-02-142021enTubing design plays a major role in the production of the Well/field and economy of the whole project. In this project, the key factors in designing the tubing will be discussed in detail, from the reservoir, type of fluids, flow assurance, flexibility in operation, safety, etc. Tubing strings must be sized correctly among almost 10 different OD tubing sizes that have been tried in this project to allow the fluids to flow effectively or to permit the installation of effective artificial lift equipment. The results will be applied to some existing wells, with aim of increasing the production and minimizing the cost of production per barrel of oil.In this project, we have covered the principles of well tubing optimization, by taking 5 wells that exist, as the case study. - Selection of the best tubing size in order to enhance the oil production rate. This is done by running 19 different tubing sizes for each well by using PIPESIM software. - Due to not having the exact value of permeability in that field we have checked the effect of reservoir permeability as well by running different tubing sizes. - On top of the tubing optimization and selecting the worst-case scenario of reservoir permeability in that field we have checked for different water cut and skin factor effects at the mid-end life of each well. - Showing the effect of outlet pressure (Separator pressure) on optimum production. - Showing the effect of reservoir pressure depletion at the mid-end life on the production rate. - Describing and showing the effect of Gas lift as an artificial lift in the future on each well.http://creativecommons.org/licenses/by/4.0/Technical University of Crete::School of Mineral Resources EngineeringChnur_ Arif_MSc_2021.pdfChania [Greece]Library of TUC2022-02-13application/pdf7.0 MBfree Arif Chnur Arif Chnur Giotis Andreas Γιωτης Ανδρεας Marinakis Dimitrios Μαρινακης Δημητριος Bahman,Tohidi MSC thesis