Identification of permeable strata according to the data obtained by radon tracer technique

The technique of identification of permeable strata in oil well pits according to the data obtained by radon tracer technique. The identification of permeable strata is made by the increment of anomalous component of gamma field intensity. The technique provides three variants of using radon indicator: drilling of prospect space using washing liquid activated with radon; introduction of labelled solution into strata after their drilling; introduction of activated liquid into well space under study before column lowering. On the basis of 12 well investigations (up to 5300 m depth) the conclusion of high resolution of the method has been made