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方法经系统地质地球化学特征对比分析表明，孔西潜山奥陶系及中生界下白垩统的油气均来自古生界烃源岩。目的证明孔西潜山的原油性质与第三系原油性质完全不同。结果孔西潜山属印支－燕山早期形成并进一步为第三系深埋的挤压－逆冲性断块背斜构造；上、下古生界烃源岩成烃条件是其油气形成的基础，古高今低的挤压逆冲背科带和反转构造是寻找古生界原生油气藏的有利地区。结论孔西潜山原生油气藏的发现，是华北地区几十年来古生界油气勘探的突破，为今后进一步开展这一领域的油气勘探提供了重要的供鉴作用。
Methods The comparative analysis of systematic geo-geochemical characteristics shows that the hydrocarbon in Ordovician and Mesozoic Lower Cretaceous in the Kongxi buried hill are from Paleozoic source rocks. The purpose of this study is to prove that the nature of the crude oil in the buried hill of Kongsi is completely different from that of the Tertiary oil. Results The Kongsi buried hill was formed during the Indosinian-Yanshanian period and further developed as a deep-buried compression-thrust block anticline in the Tertiary. The hydrocarbon generation conditions of upper and lower Paleozoic source rocks are the basis of oil and gas formation. The high-low crustal thrust belt and inversion structure are favorable areas for finding the Paleozoic primary oil and gas reservoirs. Conclusions The discovery of the buried reservoirs in the Kongxi buried hill is a breakthrough in the exploration of Paleozoic hydrocarbons in North China in the past decades and provides an important reference for further exploration of oil and gas in this area in the future.