نتایج جستجو برای: saturation profile

تعداد نتایج: 268548  

In this article, the impact of input pump profile on the gain spectrum as well as the saturation behavior of one-pump fiber optical parametric amplifiers (FOPAs) is investigated. Since in practical circumstances, pump sources used for FOPAs have Lorentz-Gaussian profile instead of Gaussian, a more realistic case is considered for simulating FOPAs in this article. The results of simulations for ...

Journal: :geopersia 0
hamid sharifi galiuk institute of petroleum industry, tehran hessam aloki bakhtiari institute of petroleum industry, tehran rezvan behin institute of petroleum industry, tehran mohammad reza esfahani institute of petroleum industry, tehran

the simultaneous flow of oil and water in porous media is described by relative permeability curves, mainly derived from laboratory experiments. relative permeability is of paramount importance in predicting reservoir production performance and drive mechanisms and its value depends largely on the volume fraction of fluids present in the test samples. nowadays x-ray scanners are one of the most...

Journal: :geopersia 2012
hamid sharifi galiuk hessam aloki bakhtiari rezvan behin mohammad reza esfahani

the simultaneous flow of oil and water in porous media is described by relative permeability curves, mainly derived from laboratory experiments. relative permeability is of paramount importance in predicting reservoir production performance and drive mechanisms and its value depends largely on the volume fraction of fluids present in the test samples. nowadays x-ray scanners are one of the most...

Journal: Geopersia 2012
Hamid Sharifi Galiuk Hessam Aloki Bakhtiari Mohammad Reza Esfahani Rezvan Behin

The simultaneous flow of oil and water in porous media is described by relative permeability curves, mainly derived from laboratory experiments. Relative permeability is of paramount importance in predicting reservoir production performance and drive mechanisms and its value depends largely on the volume fraction of fluids present in the test samples. Nowadays X-ray scanners are one of the most...

Journal: :Magnetic resonance in medicine 2009
Sonal Josan Elena Kaye John M Pauly Bruce L Daniel Kim Butts Pauly

Ultrashort echo time imaging with half RF pulse excitation is sensitive to eddy currents induced by the slice-select gradient that distorts the half pulse slice profile. This work demonstrates improvements in the half pulse profile by using spatial saturation on both sides of the imaged slice to suppress the out-of-slice magnetization. This effectively improves the selectivity of the half pulse...

Journal: :iranian journal of oil & gas science and technology 2013
hamid heydari jamshid moghadasi reza motafakkerfard

cementation factor is a critical parameter, which affects water saturation calculation. in carbonate rocks, due to the sensitivity of this parameter to pore type, water saturation estimation has associated with high inaccuracy. hence developing a reliable mathematical strategy to determine these properties accurately is of crucial importance. to this end, genetic algorithm pattern search is emp...

H Sharifi Galiuk Rezvan Behin,

Displacement of oil and water in porous media of reservoir rocks is described by relative                      permeability curves, which are important input data for reservoir performance simulation and drive mechanism studies. Many core studies, such as multiphase relative permeability, capillary pressure and saturation exponent determination, depend on the volume fractions of multiphase flui...

2003
G. S. Pell D. P. Lewis R. J. Ordidge C. A. Branch

G. S. Pell, D. P. Lewis, R. J. Ordidge, C. A. Branch Brain Research Institute, Heidelberg, VIC, Australia, Nathan Kline Institute, Orangeburg, NY, United States, University College London, London, Middlesex, United Kingdom Synopsis: A novel implementation of the QUIPSS II method for quantitative multi-slice perfusion imaging is demonstrated with an optimized saturation scheme based on a double ...

2014
Andreas Steigmiller Birte Glimm Thorsten Liebig

Nowadays, saturation-based reasoners for the OWL EL profile are able to handle large ontologies such as SNOMED very efficiently. However, saturation-based reasoning procedures become incomplete if the ontology is extended with axioms that use features of more expressive Description Logics, e.g., disjunctions. Tableau-based procedures, on the other hand, are not limited to a specific OWL profile...

2005
David A. DiCarlo

In uniform soils that are susceptible to unstable preferential flow, the water saturation exhibits a nonmonotonic profile upon continuous infiltration. This overshoot cannot be described by the conventional Richards equation. Here, solutions to the infiltrations using a popular nonequilibrium extension to the Richards equation are obtained using the traveling wave nature of the saturation profi...

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