terms:time_average_relationship
An empirical expression used for calculating porosity from interval transit time determined from acoustic logs:
where t = observed interval transit time, tf = transit time in the pore fluid, and tma = transit time in the rock matrix. This relation works well in clean consolidated formations with uniformly distributed pores. In vuggy formations, the sonic log may not reflect the secondary porosity; and in unconsolidated formations, this relationship may overestimate porosity. In such cases, the formula may be empirically modified to give better values.
terms/time_average_relationship.txt · Last modified: 2023/11/22 08:43 by 127.0.0.1