Zobrazeno 1 - 4
of 4
pro vyhledávání: '"K. J. Ellefsen"'
Publikováno v:
GEOPHYSICS. 57:1428-1434
We have developed a method that estimates a shear modulus [Formula: see text] of a transversely isotropic formation using the tube wave generated during acoustic logging. (The symmetry axis of the anisotropy is assumed to parallel the borehole.) The
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::46427d87f086f23c5defdbda3ed734f5
https://doi.org/10.1190/1.1443210
https://doi.org/10.1190/1.1443210
Publikováno v:
The Journal of the Acoustical Society of America. 89:2597-2616
Elastic anisotropy affects the modes generated during acoustic logging. To study these effects, the wave equation was solved using a variational method for a model consisting of a fluid-filled borehole through a solid whose anisotropy is defined in t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8b6716a3ab73b07379b654ba86e94de0
https://doi.org/10.1121/1.400699
https://doi.org/10.1121/1.400699
Publikováno v:
IEEE 1991 Ultrasonics Symposium.
A method of estimating c/sub 66/, one of the shear moduli of a transversely isotropic rock, using a guided wave generated during acoustic logging is described. The symmetry axis of the anisotropy is assumed to be parallel to the borehole. The inversi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::47e545817b3a1dd8ec27bcff6b0ef523
https://doi.org/10.1109/ultsym.1991.234100
https://doi.org/10.1109/ultsym.1991.234100
Publikováno v:
Journal of Geophysical Research. 96:537
To study the normal modes generated during acoustic logging, the authors have developed a method to calculate (1) phase velocities when the formation has slight, general anisotropy, (2) partial derivatives of either the wave number or frequency with
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cc1b3f41fbae2ec38c1d646bdd5803e1
https://doi.org/10.1029/90jb02013
https://doi.org/10.1029/90jb02013