Zobrazeno 1 - 10
of 25
pro vyhledávání: '"S. Ekrann"'
Autor:
S. Ekrann, Terje Sira
Publikováno v:
Modeling, Identification and Control, Vol 3, Iss 4, Pp 231-242 (1982)
A computer code has been developed for the approximate computation of electric and magnetic fields within an electric reduction furnace. The paper describes the numerical methods used to solve Maxwell's quasi-stationary equations, which are the gover
Externí odkaz:
https://doaj.org/article/3986d458f3294676a290b5323a6d8c2b
Autor:
J. O. Aasen, S. Ekrann
Publikováno v:
Transport in Porous Media. 41:245-262
Steady-state upscaling is based on steady-state solutions to the two-phase flow equations. We study features of steady-state solutions, and the applicability of upscaled flow functions based thereon in transient situations. Also, efficient computatio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2e402c5f360203f27e7cb3bbb951cfa0
https://doi.org/10.1023/a:1006765424927
https://doi.org/10.1023/a:1006765424927
Publikováno v:
Environmental Geology. 38:204-208
Bacterial interaction with oil and sea water, in a porous medium, was studied using a transparent micro model mounted on a cybernetic-controlled positioning board of an inverted microscope. This was interfaced with computer-operated image analysis an
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::640ce776b34f0c508832e7b181275c40
https://doi.org/10.1007/s002540050416
https://doi.org/10.1007/s002540050416
Publikováno v:
Journal of Petroleum Science and Engineering. 19:21-32
We present a theoretical study of how the properties of the individual cores in a composite core influence the measured relative permeabilities of a waterflood. The assumptions are that relative permeabilities and porosities are equal for all individ
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::940565c622d9ad9da6a819ceb9cb5b63
https://doi.org/10.1016/s0920-4105(97)00032-6
https://doi.org/10.1016/s0920-4105(97)00032-6
Autor:
T. Litlehamar, S. Ekrann
Publikováno v:
ECMOR VII - 7th European Conference on the Mathematics of Oil Recovery.
In the pseudo function approach, transmissibilities for reservoir simulation are constructed by inverting some (local) model solution of the equations in question.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::511600e456ad0feb0cd34850150e0cd8
https://doi.org/10.3997/2214-4609.201406106
https://doi.org/10.3997/2214-4609.201406106
Autor:
S. Ekrann
Publikováno v:
All Days.
The paper addresses some mathematical aspects of water saturation modeling. The upscaling problem, i.e., the substitution of an equivalent homogeneous medium for the real heterogeneous one, is shown to have a simple solution. This solution ensures re
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::543eb8a08c3c24f81dfb650bf8dea0d8
https://doi.org/10.2118/56559-ms
https://doi.org/10.2118/56559-ms
Autor:
S. Ekrann, J. O. Aasen
Publikováno v:
ECMOR VI - 6th European Conference on the Mathematics of Oil Recovery.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::abb432fc5f87025de0029f54277f57fb
https://doi.org/10.3997/2214-4609.201406660
https://doi.org/10.3997/2214-4609.201406660
Publikováno v:
All Days.
The paper describes an approximate method to compute effective relative permeabilities and capillary pressure for 3D heterogeneous porous media. The method is based on the self-consistent approximation, and works in the capillary (quasi-static, low v
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::83eb558d040660c7214204763e82486d
https://doi.org/10.2118/35493-ms
https://doi.org/10.2118/35493-ms
Autor:
S. Ekrann, Tadeusz W Patzek, J. E. Hanssen, Clayton J. Radke, L. M. Surguchev, Anthony R. Kovscek
Publikováno v:
IOR 1995 - 8th European Symposium on Improved Oil Recovery.
Gas coning contributes to unfavorably high gas/oil ratio (GOR) in reservoirs with a gas cap. We investigate a novel treatment technology, currently under consideration for a field trial for prevention of gas coning with an integrated experimental and
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c4ef94801d3d4659c049758874e05a77
https://doi.org/10.3997/2214-4609.201406965
https://doi.org/10.3997/2214-4609.201406965
Autor:
S. Ekrann
Publikováno v:
IOR 1991 - 6th European Symposium on Improved Oil Recovery.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d6fb86a3b748841dff1ab0205a7d316a
https://doi.org/10.3997/2214-4609.201411301
https://doi.org/10.3997/2214-4609.201411301