Abstract：The integrative study of oil/gas exploration in new realm achieved abundant results in 2005.The 4 important breakthroughs have been gained in new exploration realms and regions such as No.1~2 structural belts in Nanpu of Jidong beach,deep natural gas in Songliao basin,Mesozoic lithologic reservoir in Ordos area,carbonate reef flat composite in Tazhong area; important discoveries have been obtained in prospecting study of litho-stratigraphic oil/gas reservoirs in both sides of Xifeng and Baibao area of Ordos,Qikou sag of Bohai Bay basin and pieces-joint exploration in deep horizons of Qingxi sag,Jiuquan basin; 6 important and valuable seeps have been obtained in prospecting study of Ying'er sag.Summarized studied results in new realm,it discovered that the oil-rich sags,frontland thrust belt,carbonate rock,lithologic reservoir and peripheral key basins are main realm of discovering oil/gas; paying more attention to the basic and fine works and strengthening dominant techniques are the key of continuous discovery in new realm.
