الفهرس 
CHAPTER 1-Introduction and Literature ReviewOnly 14 pages are availabe for public view
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Abstract
Artificial lift methods include pump-assisted lift and gas lift. Gas lift is an artificial lift technique used to increase flow rate of oil wells. Gas lift has been applied successfully worldwide to increase production of depleted wells. In this method, high pressure gas is injected into the oil column to reduce its average density and make it flow to the surface. The main objectives of this study are (1) develop and apply different techniques for enhanced reservoir characterization, (2) investigate the effects of (a) injected gas gravity, (b) composition of injected gas mixture, and (c) reservoir temperature on the performance of gas lift, (3) develop a total-system production-optimization model using PROSPER and GAP modeling programs, and (4) increase oil production and optimize the gas injected/fluid produced ratio in Ramadan Field, Egypt, by utilizing the existing compression capacity. The developed production model has been used for production optimization and allocation of lift gas in a multi well network, as well as for prediction of future system requirements and identification of any bottlenecking opportunities. Furthermore, sensitivity analysis tests have been carried-out to draw practical recommendations for individual-well gas lift injection rates. The attained results indicated that (1) the characterization number application has shown more accurate and refined description of the reservoir under development than other techniques, (2) gas composition of injected gas has an important effect on oil production and should be optimized while reservoir temperature has shown minimal effect on oil production, (3) the use of current simulators provided very effective tools for optimizing the oil production by gas lift technique, and (4) gas lift optimization in Ramadan oil field can help in overcoming the high pressure gas (HPG) constraints, saving gas for the nearby July oil field and increasing the total production for both fields. The developed production model step has been completely implemented, field wide optimization has been pursued and multi well networked model has been established. The application of the obtained results is expected to have real impact in improving the gas lift performance in similar fields in the Middle-East and worldwide and provides profitable economic feasibility.