PROCEDIMENTO PER INDIVIDUARE MEDIANTE MISURA DI RAGGI GAMMA UNA SUPER FICIE LIMITE FRA MEZZI IN PARTICOLARE FRA OLIO E ACQUA SALSA NELLACOSTRUZIONE E NELL ESERCIZUI DI CAVERNE

摘要

The interface between two fluids such as oil and water in an underground cavern may be detected by placing a gelled substance containing a source of gamma radiation at the interface and detecting the emissions from the gelled substance.