Determination of oil- and gas-bearing intervals in cased boreholes by nuclear geophysical methods

The generalized results of explorations of the bottom of old exploitation wells with a complex of nuclear geophysical methods, i.e. pulsed neutron-neutron log, gamma-log and neutron-gamma log, together with a systematic measurement of special features are presented. It is shown that the use of this complex can increase the reliability of geophysical testing