摘要
综合分析柯坪塔格组中段泥岩的韧性指数、突破压力、伊利石结晶度等盖层评价参数,认为该套区域性盖层处于成岩作用的中晚期,封盖性能优越,具备良好的封盖条件。但其如果在断裂带附近,泥岩盖层的封盖性将受到一定的影响。从现今柯坪塔格组下段油藏的空间分布来看,该套区域性盖层起到了明显的封盖作用,对油藏的形成与分布具有明显的控制作用。
By means of comprehensive analysis of the parameters used for evaluation of the Kepingtage Formation mid- member mudstone cap ruck,such as ductility index,breakthrough pressure and illite cryslallinity,it is concluded that this set of regional cap rock is at the mid- late stage of diagenesis with excellent sealing funrtion,having good condition of sealing and capping.But,near the fault zone,the sealing and capping function of the mudstone cap rock is affected somewhat.From the spulial distribution of the Kepingtage Formation lower member reservoir,it can be seen that this set of cap rock has remarkably played its scaling action and has obviously controlled over the reseirvoir occurrence and distribution.
出处
《特种油气藏》
CAS
CSCD
北大核心
2014年第1期64-67,154,共4页
Special Oil & Gas Reservoirs
基金
国家科技重大专项"塔里木盆地碎屑岩层系大中型油气田富集规律与勘探方向"(2011ZX05002-003)
关键词
盖层特征
泥岩
控油作用
中段
柯坪塔格组
塔中北坡
feature of cap rack
mudstone oil contral
mid-members Kepingtage Formation
Tazhong north slope
