摘要
致密油资源是目前和未来一段时间我国非常规油气勘探和开发的主体,成藏类型以近源成藏居多,源储一体式较少.以渤海湾盆地冀中拗陷束鹿凹陷泥灰岩致密油成藏特征为例,探讨源储一体型致密油藏特征;综合岩心、地震、钻井地质和地球化学分析等资料,研究束鹿凹陷形成致密油藏的烃源岩、致密储层及源储组合特征.结果表明,研究区优质烃源岩处于成熟阶段,有机质丰度高、类型好、厚度大,具有较强的生油能力;储集层发育孔隙—裂缝双重空间,烃源岩与致密油储层一体化,为典型源储一体式致密油藏,主要分布在中、南洼槽中心及斜坡低带.该成果丰富我国致密油成藏类型,为推动冀中拗陷乃至整个渤海湾盆地致密油勘探开发起到指导作用.
Tight oil is becoming the main part of exploration and development of unconventional resources in our country before long,most of which are source rock next to reservoirs,and source rock and reservoir rarely live together.We take Shulu sag of Central Hebei depression,Bohai bay basin for example to analyze the features of tight oil in source rock and reservoir.The features of source rock,tight reservoir and the relationship between them were analyzed and evaluated using core,seismic data,geological drilling and geochemical data etc,which show that the source rocks in mature stage is thick and the abundance of organic matter is medium.What's more,the source rocks are capable of higher oil resources,and the double reservoir space including pore and crack is developed in thick tight reservoir,so the source rock and reservoir live together.Tight oi1reservoirs are mainly distributed in the centre and slope region of the middle and south sag.On the other hand,thick layer of marl segment in the member 3of Shahejie formation is longitudinal sweet point.The study on tight oil in Shulu sag makes the type of tight oil in our country variable,which will promote the exploration and development of tight oil in Central Hebei depression or whole Bohai bay basin.
出处
《东北石油大学学报》
CAS
北大核心
2013年第6期47-54,8,共8页
Journal of Northeast Petroleum University
基金
国家科技重大专项(2011ZX05043-001)
关键词
致密油
源储一体
成藏特征
成藏模式
束鹿凹陷
冀中拗陷
渤海湾盆地
tight oil
rock and reservoir
accumulation features
accumulation model
Shulu sag
Central Hebei depression
Bohai bay basin
