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PARAMETER OPTIMIZATION OF VELOCITY DEPTH FUNCTIONS OF GIVEN FORM BY USE OF ROOT‐MEAN‐SQUARE VELOCITIES *
Author(s) -
MARSCHALL R.
Publication year - 1972
Publication title -
geophysical prospecting
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.735
H-Index - 79
eISSN - 1365-2478
pISSN - 0016-8025
DOI - 10.1111/j.1365-2478.1972.tb00661.x
Subject(s) - square root , interval (graph theory) , offset (computer science) , geology , reflection (computer programming) , mathematics , mathematical analysis , square (algebra) , geodesy , geometry , combinatorics , computer science , programming language
A bstract From seismic surveys zero offset reflection times and root‐mean‐square velocities are obtained. By use of Dix‐Krey's formula, the interval velocities can be calculated. If no well velocity survey exists, the interval velocities and T (o) times are the only available information. The suggested way to get a regionally valid velocity distribution is to select N “leading horizons”, where a major change in the velocity parameters occurs and to compute the parameters of the selected velocity depth function (in most cases linear increase with depth) by a special approximation for the interval between two adjacent “leading horizons”. Herewith all reflection horizons within the interval are taken into account.