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通过大量露头、钻井样品的测试分析,初步落实了冀北中-新元古界、华北南缘下寒武统、鄂尔多斯盆地西南缘中奥陶统优质烃源岩的分布。冀北中-新元古界优质烃源岩主要分布在蓟县系洪水庄组下部,华北南缘下寒武统优质烃源岩主要发育在辛集组(或雨台山组)底部,鄂西南中奥陶统较好烃源岩主要发育在平凉组下部,它们均以黑色泥页岩为主要特点。同时指出,华北台内奥陶系马家沟组碳酸盐岩是一套总体较差的烃源岩;上古生界石炭-二叠系煤系烃源岩以南华北地区发育条件最为优越,比鄂尔多斯、渤海湾盆地多发育了上、下石盒子组含煤层系。综合运用多种分析测试技术,对东北地区上古生界进行了变质相区划,初步认为二连盆地中西部、松辽盆地东南部是上古生界发育未变质潜在烃源岩的主要地区。综合评价认为,鄂尔多斯盆地西南缘是古生界油气突破的有利地区,华北南部是进一步探索上古生界煤成油气的有利地区,冀北中-新元古界、东北上古生界是值得进一步研究探索的新领域。
Based on a large number of outcrops and drilling samples, the distribution of the Middle Ordovician high-quality source rocks in the Meso-Neoproterozoic Jibei area, the Lower Cambrian in the southern margin of the North China, and the southwestern margin of the Ordos Basin has been initially established. The Meso-Neoproterozoic high-quality source rocks in northern Hebei are mainly distributed in the lower part of the Hongshuangzhuang Formation in Jixian. The Lower Cambrian high-quality source rocks in the southern margin of North China mainly develop at the bottom of Xinji Formation (or Yu-Taishan Formation) The Tao-tao better source rocks are mainly developed in the lower part of the Pingliang Formation, all of which are characterized by black shale. At the same time, it is pointed out that Ordovician Majiagou carbonate rocks in North Taiwan are a set of generally poor source rocks. The Upper Paleozoic Carboniferous Permian coal measure source rocks have the most favorable development conditions in North China, More than the Ordos, Bohai Bay Basin more than the upper and lower Shihezi coal-bearing strata. Comprehensive use of a variety of analytical testing techniques, metamorphic facies division of the Upper Paleozoic in the northeast region, preliminary believe that the central and western Erlian Basin, southeast of the Songliao Basin is the main area of the upper Paleozoic undeformed metamorphic potential source rocks. The comprehensive evaluation suggests that the southwestern margin of the Ordos Basin is a favorable area for the breakthrough of Paleozoic hydrocarbons. The southern part of North China is a favorable area for further exploring the oil and gas in the Upper Paleozoic. The Meso-Neoproterozoic in northern Hebei and the Upper Paleozoic in the northeast deserve further study Explore new areas.