准噶尔盆地西北缘车排子地区油气成藏模式

Hydrocarbon Reservoir Formation Model of Chepaizi Area in Northwest Edge of Junggar Basin

准噶尔盆地西北缘车排子地区油气成藏具有多油气源、多套产层、多种油气藏类型和多期成藏的特征。文中运用烃源岩地化指标对烃源岩进行了对比 ,分析了多套烃源岩各自对油气成藏的贡献 ,并对源岩地化特征与油气地化特征进行比较 ,确定油气的来源。运用包裹体测温资料分析了不同构造区带的油气成藏期次差异 ,确定了不同层系油藏的成藏时间。在烃源岩分析、油源对比和油气运移期次研究的基础上 ,结合构造演化和沉降埋藏史分析 ,充分考虑在不同成藏阶段多套烃源岩的供烃差异和成藏要素匹配关系 ,建立了多烃源岩、多储盖组合。

Reservoir formation in Chepaizi region,northwest of Junggar basin,has such characteristics as multiple source rocks,multiple production formations,multiple reservoir types and multiple reservoir formation periods.This paper defines the contribution of each source rock by comparing their geochemical parameters and defines which resource rock the hydrocarbon come from by comparing the geochemical characteristics of source rocks and hydrocarbon.Using fluid inclusion data this paper also discusses the differences of resevoir formation period in different tectonic zones and defines the reservoir formation key time of different group.Based on research of resource rock analysis,relation analysis of hydrocarbon and source rock and definition of migration period,accompanied with tectonic evolution and subsidence,considering the contributing rate difference of migration period,accompanied with tectonic evolution and subsidence,considering the contributing rate difference of each source rocks and the matching relation of reservoir formation factors in different reservoir formation stages,the paper constructed the reservoir formation model of the area.