نتایج جستجو برای: permeability prediction

تعداد نتایج: 302587  

Journal: :Journal of Japan Society of Civil Engineers, Ser. C (Geosphere Engineering) 2017

Journal: :Composites Part A-applied Science and Manufacturing 2022

Permeability of fibrous microstructures is a key material property for predicting the mold fill times and resin flow path during composite manufacturing. In this work, we report an efficient approach to predict permeability 3D from deep learning based predictions 2D cross-sections combined via circuit analogy. After validating network’s in extending it 3D, investigate its capabilities handling ...

Journal: :Journal of pharmaceutical sciences 2010
Arik Dahan Jonathan M Miller Amnon Hoffman Gregory E Amidon Gordon L Amidon

A quasi-equilibrium mass transport analysis has been developed to quantitatively explain the solubility-permeability interplay that exists when using cyclodextrins as pharmaceutical solubilizers. The model considers the effects of cyclodextrins on the membrane permeability (P(m)) as well as the unstirred water layer (UWL) permeability (P(aq)), to predict the overall effective permeability (P(ef...

2013
Pinkun Guo Yuanping Cheng

The coal permeability is an important parameter in mine methane control and coal bed methane (CBM) exploitation, which determines the practicability of methane extraction. Permeability prediction in deep coal seam plays a significant role in evaluating the practicability of CBM exploitation. The coal permeability depends on the coal fractures controlled by strata stress, gas pressure, and strat...

Journal: :فیزیک زمین و فضا 0
کیوان نجف زاده دانشجوی کارشناسی ارشد، گروه فیزیک زمین، موسسه ژئوفیزیک، دانشگاه تهران، ایران محمدعلی ریاحی دانشیار، گروه فیزیک زمین، موسسه ژئوفیزیک دانشگاه تهران، ایران محسن سیدعلی کارشناس ارشد مهندسی اکتشاف نفت، تهران، ایران

permeability is a key parameter in reservoir characterization. in fact, without accurate information about reservoir permeability, there is no good solution for reservoir engineering problems. up to now, permeability values of a reservoir have been calculated through laboratory measurements or well testing methods. these methods are useful but they cannot describe a reservoir reliably and preci...

2016
W. S. Xu P. Y. Luo L. Sun N. Lin

The capillary pressure J-function is a dimensionless measure of the capillary pressure of a fluid in a porous medium. The function was derived based on a capillary bundle model. However, the dependence of the J-function on the saturation Sw is not well understood. A prediction model for it is presented based on capillary pressure model, and the J-function prediction model is a power function in...

2011
R. Shawahna NU. Rahman

BACKGROUND AND THE PURPOSE OF THE STUDY Partition coefficients (log D and log P) and molecular surface area (PSA) are potential predictors of the intestinal permeability of drugs. The aim of this investigation was to evaluate and compare these intestinal permeability indicators. METHODS Aqueous solubility data were obtained from literature or calculated using ACD/Labs and ALOGPS. Permeability...

2014
R. Gholami A. R. Shahraki M. Jamali Paghaleh

Permeability is a key parameter associated with the characterization of any hydrocarbon reservoir. In fact, it is not possible to have accurate solutions to many petroleum engineering problems without having accurate permeability value. The conventional methods for permeability determination are core analysis and well test techniques. These methods are very expensive and time consuming. Therefo...

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