Results 271 to 280 of about 101,695 (289)

Chromium and nickel migration study through fine grained soil

Journal of Hazardous Materials, 2009
A comprehensive laboratory-scale investigation was carried out to explore the toxic metal attenuation capacity of a field clay sample collected from adjoining areas of an ash pond site of a Super Thermal Power Plant in West Bengal, India. The existence of two major elements viz., Cr6+ and Ni2+ in excess to permissible limit was observed in soil and ...
Sunil, Kumar, Sudipta, Ghosh, Somnath, Mukherjee, Sujoy, Sarkar   +3 more
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Analytical Model for Fines Migration During Water Injection

Transport in Porous Media, 2013
Exact solution is derived for axisymmetric flow during water injection with fine particles detachment, migration, attachment and straining. The solution contains the so-called erosion front described as a weak discontinuity, behind which the mechanical equilibrium of attached particles holds and the dynamic attachment occurs ahead of the front ...
Bedrikovetski, P., Caruso, N.
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Entrapment or Piping of Fines During Migration

1998
In the previous chapters we have discussed the release of fine particles from the pore surface to the liquid stream flowing through the porous medium. These fine particles while flowing with the liquid phase, can either readhere to the pore surface or flow without capture or get entrapped at the pore constrictions.
Kartic C. Khilar, H. Scott Fogler
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Permeability Impairment Due to Fines Migration in Sandstones

SPE Formation Damage Control Symposium, 1986
ABSTRACT In a previous publication1 critera were derived for predicting the onset of fines release in sandstones. The present paper describes quantitatively the behavior of the sandstone after the fines have been released. The entrapment of fines at pore throats is modelled using a statistical approach and general population balance ...
M.M. Sharma, Y.C. Yortsos
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Mathematical modelling of fines migration in geothermal reservoirs

Geothermics, 2016
Laboratory-based mathematical modelling of fines migration allows predicting well productivity reduction during the geothermal reservoir exploitation. The analytical model for one-dimensional flow with ionic strength alteration has been derived.
You, Z., Yang, Y., Badalyan, A., Bedrikovetski, P., Hand, M.   +4 more
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Quantitative Theory for Fines Migration and Formation Damage

SPE International Symposium and Exhibition on Formation Damage Control, 2010
Abstract Particle detachment from the matrix during suspension transport in porous media was widely observed for laboratory corefloods and flows in natural reservoirs. A new mathematical model for detachment of particles is based on mechanical equilibrium of a particle positioned on the internal cake in the pore space. The torque balance
P. Bedrikovetsky, F. D. Siqueira, C. Furtado, A. L. de Souza   +3 more
openaire   +1 more source

Effects of kaolinite in rocks on fines migration

Journal of Natural Gas Science and Engineering, 2017
Abstract A laboratory study has been undertaken on the effect of permeability variation during low-salinity water injection as a function of kaolinite content in the rock. A novel methodology of preparing artificial sand-packs with a given kaolinite fraction has been established.
Russell, T., Pham, D., Neishaboor, M., Badalyan, A., Behr, A., Genolet, L., Kowollik, P., Zeinijahromi, A., Bedrikovetsky, P.   +8 more
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Electrochemical Migration of Fine-Pitch Nanopaste Ag Interconnects

Journal of Electronic Materials, 2016
With the development of intelligent electronic products, usage of fine-pitch interconnects has become mainstream in high performance electronic devices. Electrochemical migration (ECM) of interconnects would be a serious reliability problem under temperature, humidity and biased voltage environments.
Chia-Hung Tsou, Kai-Ning Liu, Heng-Tien Lin, Fan-Yi Ouyang   +3 more
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Modified Mathematical Model for Fines Migration in Oilfields

All Days, 2011
Abstract Permeability decline during corefloods with varying water composition, especially with low salinity water, has been widely reported in the literature. It has often been explained by the lifting, migration and subsequent plugging of pores by fine particles, which has been observed in numerous core flood tests with altered water ...
A.. Zeinijahromi, F.. Machado, P.. Bedrikovetsky   +2 more
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True‐amplitude migration taking fine layering into account

GEOPHYSICS, 1996
The central process in wave‐equation—based depth migration is inverse wavefield extrapolation. The commonly applied matched filter approach to inverse wavefield extrapolation ignores the angle‐dependent amplitude and phase distortions that are related to fine layering. This may result in dispersed images and erroneous amplitude variation with angle of
C. P. A. Wapenaar, F. J. Herrmann
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