松辽盆地北部青一段泥页岩储层特征

Reservoir characteristics analysis of Qingyi formation shale,Northern Songliao Basin

对于页岩油资源来讲,泥页岩层系的储层性质的好坏成为了页岩油藏存在与否的关键,本文以松辽盆地白垩系青山口组一段泥页岩层系为例,针对其烃源岩基础地球化学特征,储集空间特征以及矿物含量等方面开展了相关研究工作,并认为,青一段泥页岩层系有机质丰度较高(TOC大部分为1~3%),类型好(以I,II1型为主)且大部分泥页岩层系正处于生油高峰阶段,脆性矿物含量适中且地层中发育了大量的不同类型的孔隙,一方面为油气的排出提供了有效的通道,另一方面也为残留在泥页岩层系中的油气提供了充足的储集空间。

In terms of shale oil resources,the reservoir quality of mud shale system becomes a key to presence or absence of shale reservoirs.For the basis of its geochemical characteristics of source rocks,this article sets the first member of Cretaceous Qingshankou formation mud shale system as an example.Reservoir space characteristics and mineral content are carried out research work.Furthermore,the first member of Qingshankou formation series has high abundance of organic matter(TOC mostly is 1-3%),good type(mainly based on I,II1)and most of the mud shale system is at the peak of oil generation stage.The brittle mineral content is moderate,and the formation develops large number of different types of pores,which provides an effective channel.On the other hand,provides ample reservoir space for the oil and gas left in the mud shale lines.