Existence forms and fraction mechanisms of radionuclides in the underground nuclear explosions zones on the hydrocarbon raw deposits

Experimental data on concentrations and bearing forms of radionuclides in the oil, soils and natural waters samples collected in the underground nuclear explosions zones on the hydrocarbon raw deposits (Gezh, Osina and Middle Botuob deposits) were obtained. Effect of explosive and post-explosive processes, as well as the deposits exploitation regimes on radionuclide migration in the underground nuclear explosion zones were considered. It was established that in a number of cases the underground nuclear explosions cavities lost their impermeability. This leads to propagation of technogenous radionuclides outside the cavities boundaries. It is shown, that light hydrocarbon oil fraction collected on the different distance from explosion cavities is enriched with tritium, and the heavy fractions with 137Cs decay products. The methodic aspects of works on the radionuclide concentrations determination and its physico-chemical forms in the samples collected on the hydrocarbon raw deposits deposits are discussed