Abstract:By analyzing the characteristics of benzene series in seafloor surface sediments of 99 sites in Qikou depression in Bohai bay, it is found that benzene and the rest of benzene series indicators have a weak correlation, while the rest of benzene sereies have a moderate correlation or strong correlation. The degradation characteristics of benzene series cause the correlation characteristics of benzene series, so benzene content detection of the samples should be timely detected. Through analysis on the distribution characteristics of benzene series in the study area, it is showed that benzene series have a very good corresponding relationship with the existing reservoir. The structure has a guiding to the distribution characteristics of benzene series. The distribution of benzene series has a very good instruction significance to oil reservoir.