海拉尔盆地油气分布规律及成藏模式

Oil-gas accumulation model analysis in Hailaer Basin

系统分析了海拉尔盆地油气聚集规律,结果表明:生油洼槽成熟烃源岩的分布控制油气富集范围;砂岩、砂砾岩和基岩风化壳是油气主要储层;主断裂控制的构造带是复式油气藏聚集的有利带;成熟生油层中不整合面控制油气的聚集.总结出由连通砂体输导层、不整合面输导层、断裂输导层控制形成的3种油气成藏模式,以及由此构成的5种油气藏类型.应用该研究成果预测了海拉尔其它断陷盆地油气勘探目标.

The accumulation rule of oil and gas in Hailaer basin is systemically analyzed in this paper,the result indicates: the distribution of mature Hydrocarbon Source rock in the Source sub-sag controls the prolific range of oil and gas; sandstone、conglomerate and efflorescence shell of base rock are chief reservoir zones; the structural belt controlled by the main rupture is advantaged zone of compound oil and gas accumulation zone; the unconformity in the mature production zones control the accumulation of oil and gas. And this paper has also summarized 3 types of the model forming oil and gas reservoir controlled and formed by connecting sand bodies transport layer、unconformity transport layer、fault transport layer, and 5 types of oil and gas reservoir, thereout, we have forecasted the exploration aim of other broke-fall basin in Hailaer basin.