MONTE-CARLO SIMULATION IN NUCLEAR GEOPHYSICS - INTERCOMPARISON OF THEPRIZMA MONTE-CARLO PROGRAM AND BENCHMARK EXPERIMENTS

The initial experience of applying a versatile ''PRIZMA'' program to a computational simulation of the results of neutron logging of rocks w ith the help of a ''SRK'' equipment used in oil-and-gas well investiga tion has been described. A water-saturated limestone of various porosi ties was used as the rock. A short summary of the general functions of the PRIZMA program which is intended for solving linear problems of t ransport by the Monte Carlo method has been presented. The general app roach to applying a non-analog simulation has been described and confi rmed for a computing a problem in nuclear geophysics. An intercomparis on between the results obtained and those of benchmark geophysical exp eriments is presented.