二连盆地阿南凹陷哈东洼槽油气成藏条件及富集规律

Formation Conditions and Enrichment Regulation of Oil and Gas Reservoir in Hadong Subsag, A'nan Sag,Erlian Basin

系统的总结了阿南凹陷哈东洼槽成藏条件,对地层层序、构造演化、成藏要素和分布规律进行了研究。通过成藏要素的剖析,认为哈东洼槽具有良好的生储盖条件,腾一段及阿尔善组顶部均发育较好储层,以扇三角洲砂体为主;发育腾一段自生自储式储盖组合、阿尔善组自生自储式储盖组合、及阿尔善组生腾一段储的下生上储式组合。通过对哈东洼槽的油藏类型研究和陡坡带和缓坡带的油气分布特征,对哈东洼槽的油气勘探指明了方向。

Formation conditions of oil and gas reservoir in Hadong subsag A＇nan sag were systematically summarized. And stratigraphic sequence, tectonic evolution, oil and gas accumulation elements,and distribution law were studied. Based on the analysis of oil and gas accumulation elements, it＇s considered that Hadong subsag has favorable conditions for formation of source-reservoir-caprocks, and the first member of Tenggeer formation and the top of the Aershan formation are well-developed reservoirs, mainly fan-delta sand bodies. This. area consists of three kinds of reservoir models, such as the oil assemblage of self-generation and self-accumulation in the first member of Tenggeer formation and the Aershan formation, the oil assemblage of down generatiton in the Aershan formation and up accumulation in the first member of Tenggeer formation. Based on the study of the reservoir type of Hadong subsag and the distribution of oil and gas in steep slope and gentle slope zone, the hydrocarbon exploration direction in Hadong subsag will be clear.