Article describes basic principles of seismic, electric prospection and electrochemical data complexation, received on the same research objects. The goal of our exploration works is complex exploration of hydrocarbon deposits on arctic shelf. Complex is based on ion-selective electrodes for detection of heavy metal complex anomalies in sea water--indicators, which lies in sedimentary cover, oil deposits, in gas and gas condensate. Measurements are completed by sea bottom stations in profiling mode. Provided descriptions of new method of seismic, electric prospection and electrochemical data complexation while interpreting results of seismic research with reflected waves method and electric prospecting by electrical resistance and / or induced polarization method and an electrochemical method. Theoretical and methodological basics of geophysics data interpretation in the implementation of hydrocarbon prospecting are presented. Complex field works features that increases reliability of deposit availability forecast are described.