Measurement of porous media component content and heterogeneity using gamma ray tomography

1998 ◽  
Vol 34 (3) ◽  
pp. 365-372 ◽  
Author(s):  
H. T. Hsieh ◽  
Glenn O. Brown ◽  
Marvin L. Stone ◽  
Dan A. Lucero
Keyword(s):  
Porous Media ◽  
Gamma Ray ◽  
Media Component ◽  
Component Content

Analysis of the Compressibility of Sediments in Batch Settling Tests Using Newtonian and Non-Newtonian Fluids

2014 ◽  
Vol 802 ◽  
pp. 280-284 ◽  
Author(s):  
Bruno Arantes Moreira ◽  
Hélio de Oliveira ◽  
Fábio de Oliveira Arouca ◽  
João Jorge Ribeiro Damasceno
Keyword(s):  
Porous Media ◽  
Gamma Ray ◽  
Porous Matrix ◽  
Particulate Material ◽  
Oil Well ◽  
Local Concentration ◽  
Vertical Column ◽  
Well Drilling ◽  
Deformable Porous Media ◽  
Nondestructive Measurements

The study of compressibility in deformable porous media is of interest in many industrial processes, such as, filtration, thickening and during oil well drilling processes in the petrochemical sector. In this work the compressibility of porous media was evaluated by the comparison of solid concentration profiles in sediments using fluids with Newtonian and non-Newtonian behavior. For this, consolidation tests in distillated water, solutions of xanthan and glycerol were performed in a vertical column from the gravitational settling of suspensions. The porosity distribution in the formed sediment was obtained after the complete settling of particulate material. The local porosity measurements were performed using the ionizing radiation emitted by americium-241. The gamma-ray attenuation technique used in this study allowed the realization of nondestructive measurements for achieving local concentration of solids. The results showed that the rheological behavior of the fluid does not change significantly the compressibility of the porous matrix.

Accuracy of gamma ray computerized tomography in porous media

1993 ◽  
Vol 29 (2) ◽  
pp. 479-486 ◽  
Author(s):  
Glenn O. Brown ◽  
Marvin L. Stone ◽  
Jack E. Gazin
Keyword(s):  
Porous Media ◽  
Computerized Tomography ◽  
Gamma Ray

On the possible gamma-ray source in Cygnus

1967 ◽  
Vol 31 ◽  
pp. 469-471
Author(s):  
J. G. Duthie ◽  
M. P. Savedoff ◽  
R. Cobb
Keyword(s):  
Gamma Rays ◽  
Gamma Ray ◽  
Right Ascension

A source of gamma rays has been found at right ascension 20h15m, declination +35°, with an uncertainty of 6° in each coordinate. Its flux is (1·5 ± 0·8) x 10-4photons cm-2sec-1at 100 MeV. Possible identifications are reviewed, but no conclusion is reached. The mechanism producing the radiation is also uncertain.

Solar Flare Energetic Neutral Emission Measurements in the Project Coronas-I

1994 ◽  
Vol 144 ◽  
pp. 635-639
Author(s):  
J. Baláž ◽  
A. V. Dmitriev ◽  
M. A. Kovalevskaya ◽  
K. Kudela ◽  
S. N. Kuznetsov ◽  
...  
Keyword(s):  
Solar Flare ◽  
Energy Range ◽  
Gamma Rays ◽  
Pulse Shape ◽  
Gamma Ray ◽  
Pulse Shape Discrimination ◽  
Shape Discrimination ◽  
Solar Neutron ◽  
Low Altitude

AbstractThe experiment SONG (SOlar Neutron and Gamma rays) for the low altitude satellite CORONAS-I is described. The instrument is capable to provide gamma-ray line and continuum detection in the energy range 0.1 – 100 MeV as well as detection of neutrons with energies above 30 MeV. As a by-product, the electrons in the range 11 – 108 MeV will be measured too. The pulse shape discrimination technique (PSD) is used.

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