For the complex clastic reservoir in Tahe oilfield, conventional logging interpretation causes multi-solutions. In order to provide rapid and accurate evaluation on the reservoirs, the authors introduced nuclear magnetic resonance (NMT) and MDT logging. By applying NMR and MDT on the actual data of several wells, the authors discussed the application results from the identification of low-resistivity oil and gas reservoirs, the evaluation of low-porosity and low-permeability reservoir and the discovery on new potential formations and complex reservoirs. The results indicate that NMR and MDT improves the accuracy of logging interpretation.