Studies of oil chromatographic fingerprint for the Mesozoic oil reservoir connectivity of the Ordos basin in southern Anbian-Dingbian area show that there exist significant differences in the fingerprint distribution between Tiebiancheng, Dingbian, Jiyuan, and Hujianshan well fields, suggesting that fluids i.

The results shows that the Mesozoic formations in this area have abundant gas source and are the potential targets for exploration in Tangyuan downchasm and that the central uplift within the downchasm and thrust anticlinal belt in West Slope are the favo.