Abstract: Inversion technique is an important tool used in reservoir prediction at present. The technic principle is toconvert conventional contact-type reflection profile into stratigraphic log response,providing convenience of direct re-search areal reservoir variations、The inversion module introduced from Jason Company in Holland in 1998 is one oftechniques intended to realize the conversion. This paper briefly introduced basic principle and working flowsheet, andsuggested that using nonimpedance inversion combined with wave impedance to investigate thin layer will be more ef-fective. After applied for one year in development and prediction of shallow reservoirs in Shenquan oilfield,better re-sults have been obtained by using Invermod technique.