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Showing posts with the label Optical Properties

Optimization of Gas Lift Allocation Using Different Models-Juniper Publishers

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Juniper Publishers Abstract Gas lift for oil-gas extraction is a common practice; however, obtaining maximum productivity of a series of set is not a simple tax because high amount of gas lift makes the optimization of few wells at the same time a very hard task. Therefore, data processing approaches based on calculations and computerized modeling has been receiving attention. By modeling well, it could be possible to obtain higher production rate versus less gas consumption. The present paper is a new approach that uses neural functions and genetic algorithm and studies the different aspects of problem solving for gas allocation optimization in five wells. The results showed that artificial neural networks have very good function in modeling gas lift process and creating gas lift performance curve versus classic methods. The differences between the results obtained by artificial neural network in comparison with results that are obtained in classic methods prove t...

Juniper Publishers | Recent Advances in Petrochemical Science

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CASTEP Study on Electronic and Optical Properties of Zinc Oxide -Recent Advances in Petrochemical Science -Juniper Publishers JUNIPER PUBLISHERS-RECENT ADVANCES IN PETROCHEMICAL SCIENCE  CASTEP STUDY ON ELECTRONIC AND OPTICAL PROPERTIES OF ZINC OXIDE Authored by Hassan Soleimani We investigate the effect of size on the electronic and optical properties of zinc oxide(ZnO). CASTEP simulations based on density functional theory has been performed to find the band structure, density of states and optical properties of zinc oxide(ZnO) bulk and nanocluster. The results show quantum confinement effect as band structure show discrete lines. The change in band gap has been observed from 0.822 eV to 0.013 eV. Band structure calculations show Fermi level shift towards conduction band. Optical properties display low value of absorption in nanocluster as compared to bulk. ZnO nanocluster show high value of dielectric function compared to bulk. The results demons...