IJCPS_Vol 04 N 02
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Item Water Potentiality of Sustainable Management Challenges in the Oued Souf Region, south east Algeria(جامعة الوادي - university of el oued, 2015) Miloudi, Abdelmonem; Remini, BouallemThis work reports a study on the effect of ultrasound on the behavior of Candida rugosa lipase in the enantioselective transesterfication of some racemic secondary alcohols (1- phenylethanol, 2-pentanol, menthol) with different acyl donors (vinyl acetate, vinyl propionate, vinyl butyrate) in the presence of organic solvents. The experiments were conducted with two different approaches: ultrasonic irradiation without stirring and stirring after ultrasonic pre-irradiation of lipase. The same experiments were conducted under conventional stirring to evaluate the effect of the ultrasound. The influence of preirradiation time, organic solvents, acyl donors and temperature were investigated. With the two approaches, the ultrasound has advantage over the conventional stirring. The best results were, however, obtained when the reactions were conducted under ultrasound without stirring. In the resolution of the menthol by vinyl acetate in hexane, the conversion increased 3-fold and the enantioselectivity 5-fold.Item STUDY OF BOIL- OVER PHENOMENON, THE ALGERIAN. PETROLEUM AS A MODEL FOR INSPECTION(جامعة الوادي - university of el oued, 2015) Ghodbane, MWith the development of oil facilities, development of industrial security and evolved methods of preventionn but industrial risks always remain present. In this work, we we'll examine a very serious phenomenon, which “Boil-Over”. This phenomenon appears in petroleum reservoirs (oil has a high viscosity), and that in the event of a fire on the roof of the tank with the presence of water at the bottom of the tank. We chose the Algerian Petroleum to conduct this study. We will talk to the disastrous results of this phenomenon, and risks to all people, equipment and the environment.Item SIMULATION STUDY FOR PRODUCTION OF HEAVY OIL: A CASE STUDY OF SOROOSH OIL FIELD, SOUTHERN IRAN(جامعة الوادي - university of el oued, 2015) Abbasi, Abbasi ,MM; Sanati, Sanati, A A; Allahyari, Allahyari, M MEffectiveness of two enhanced oil recovery techniques on recovery of Soroosh oil field, an Iranian offshore oil field is investigated and compared. The approach used is the numerical reservoir simulation by means of a well-known numerical reservoir simulator, Eclipse, and the real full field model. Water injection and immiscible gas injection processes have been simulated and compared in terms of ultimate recovery factor. It was found that natural production of oil by depletion and water drive from aquifer will result in very low ultimate recovery factor. Simulation runs also showed that water flooding can be efficient just for upper high permeability layers which contain lighter oil. Finally, from the gas injection simulation runs, it was found that immiscible gas injection can enhance ultimate recovery to 27% which is higher than that of water flooding. The decline rate of production during gas injection was slower than that of water flooding, which.Item NUMERICAL MODELING OF A PARABOLIC TROUGH SOLAR COLLECTOR AT BOUZARÉAH, ALGERIA(جامعة الوادي - university of el oued, 2015) Ghodbane, M; Boumeddane, BIn this paper, we are interested in numerical study conversion of the solar energy into thermic energy using a Parabolic through Collector at Bouzaréah, Algeria. Water is used as a heat carrier fluid. A mathematical model drawn from the energy balance equation applied to the absorber tube, it was solved by the finite difference method. A computer program was developed to solve our problem. MATLAB used as a tool for simulation. This program allows calculating the change in thermal efficiencies, the absorber tube temperatures, the fluid temperatures, the glass temperatures and the coefficient of heat loss. The results are very honorable and encouraging, where the thermal efficiency of the concentrator had passed 60%.Item INTRODUCTION OF COTTON GUM AS A NATURAL POLYMER TO ENHANCED OIL RECOVERY(جامعة الوادي - university of el oued, 2015) Arjmand, O; Zarekhafri, APolymer flooding as an enhanced oil recovery (EOR) method is widely utilized to improve water flooding and plays an important role during EOR process. Partial hydrolyzed poly acryl amide (HPAM) as one of the well known polymers is used in order to have a decrease water/oil mobility ratio in oil reservoirs. As this polymer is decomposed at reservoirs having high temperature and high salinity, the use of this polymer is limited. This study introduces cotton gum as a new natural polymer which can be used for polymer flooding. Cotton gum as a polysaccharide is obtained from the natural cottons. To compare this polymer with HPAM, related experiments including thermal decomposition and viscosity tests in same conditions were conducted and our experiments confirm that this polymer shows a good resistance against high salinities and temperatures