Zobrazeno 1 - 6
of 6
pro vyhledávání: '"Kristofer Kolltveit"'
Autor:
A. Ted Watson, Kristofer Kolltveit, Jan-Erik Nordtvedt, Randi Valestrand, Jack Phan, Alv-Arne Grimstad
Publikováno v:
Inverse Problems in Engineering. 11:289-307
This article addresses estimation of porous media property functions, absolute and relative permeabilities, from experiments on core samples. Typically, the properties are taken to be homogeneous. However, recent studies have shown that such an assum
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::86c563b748a9989c9a464113c4f965ff
https://doi.org/10.1080/1068276031000135935
https://doi.org/10.1080/1068276031000135935
Publikováno v:
International Journal of Thermal Sciences. 41:546-556
Data from core analyses, such as residual oil saturation and relative permeabilities, are of great importance for proper exploitation of the petroleum resources. Such quantities are typically determined through interpretation of data acquired during
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::02ce12c9223aa5cf6a30e79c48327cfb
https://doi.org/10.1016/s1290-0729(02)01348-0
https://doi.org/10.1016/s1290-0729(02)01348-0
Assessing the validity of a linearized accuracy measure for a nonlinear parameter estimation problem
Publikováno v:
Inverse Problems. 17:1373-1390
We consider accuracy assessment for the inverse problem of recovery of unknown coefficient functions in differential equations from data containing random errors. The set of PDEs constituting the current forward model describes a special case of two-
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b76dc05c7d76ffe8a9fe54e399ed2c1b
https://doi.org/10.1088/0266-5611/17/5/309
https://doi.org/10.1088/0266-5611/17/5/309
Publikováno v:
ECMOR III - 3rd European Conference on the Mathematics of Oil Recovery.
In this paper we analyze the impact of different types of data on the accuracy of the estimates of the relative permeability and capillary pressure functions from displacement experiments. We calculate the confidence intervals around true relative pe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f76a89a6bfbc00392b047de231fb555b
https://doi.org/10.3997/2214-4609.201411065
https://doi.org/10.3997/2214-4609.201411065
Autor:
Kristofer Kolltveit
Publikováno v:
Physical Review. 166:1057-1063
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6bb067e8a3e16d09abb5d0f6d2d49cb2
https://doi.org/10.1103/physrev.166.1057
https://doi.org/10.1103/physrev.166.1057
Autor:
Kristofer Kolltveit
Publikováno v:
Nuclear Physics A. 126:115-128
An attempt has been made to calculate the wave functions of the lowest J = 0 + states in both the target and the residual nucleus directly from two-particle transfer reactions. Due to serious limitations on the dimensions of the shell model subspace
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::50f6e9d60317a8b233337e83c5e3dedc
https://doi.org/10.1016/0375-9474(69)90402-3
https://doi.org/10.1016/0375-9474(69)90402-3