辽河坳陷油燕沟中生界潜山油气藏特征及潜力评价

Analysis of Reservoir Characters and Potential of Youyangou Oilfield in Liaohe Depression

利用综合录井、岩心观察、薄片鉴定、铸体薄片、扫描电镜等资料,综合研究辽河坳陷油燕沟潜山中生界小岭组储层岩性、物性等特征。分析潜山成藏的几个条件:多套油源供给为油气藏形成提供了丰富的物质基础;断层和不整合面为油气运移提供条件;良好的储层为油气聚集成藏提供了必要的场所。认为中生界潜山是新生古储成藏模式,并预测了荣76南为勘探有利指向区。

The comprehensive study of reservoir lithology and physical properties of Xiaoling Group Mesozoic in Youyangou hill of Liaohe depression is carried out by using data of comprehensive logging,core observation,thin section analysis,casting thin sections,scanning electron microscopy observation etc.From hydrocarbon source rocks,transporting system,source-reservoir-seal configuration etc,the forming conditions of the buried hill reservoir are analyzed：（1） Multiple supply of oil source provides a rich material base for the formation of the hydrocarbon reservoir;（2） Faults and unconformities provide the conditions for hydrocarbon migration;and（3） Good reservoir provides the necessary places for hydrocarbon accumulation.The study considers that the ancient Mesozoic hill hydrocarbon pool belongs to ＂new source to old reservoir＂ and predicts that Rong76Nan well is the advanced region for exploring.The study result has guiding significance for the future exploration.