大民屯凹陷高蜡油成因及分布规律  

Origin and distribution of high-waxy oil in Damintun Sag

作　　者：谢文彦[1] 姜建群[2] 张占文[2] 胡礼国[2] 

机构地区：[1]中国石油大学资源与信息学院,北京102249 [2]中国石油辽河油田公司,辽宁盘锦124010

出　　处：《石油学报》2007年第2期57-61,共5页Acta Petrolei Sinica

基　　金：国家自然科学重点基金项目(No.40238059)"渤海中部新构造运动及深部动力过程对大型油气系统形成的控制"资助

摘　　要：对大民屯凹陷烃源岩特征和油源进行了对比,对高蜡油来源、成因和分布规律进行了分析。结果表明,大民屯凹陷发育两套有机质类型和丰度差别显著的烃源岩,即“油页岩”和厚层泥岩。大民屯凹陷高蜡油来源于“油页岩”,而正常油来源于暗色泥岩。高丰度的有机质为大民屯凹陷高蜡油的形成提供了母质条件,有机质经过强烈的微生物改造形成了高蜡油,较低的热演化程度是高蜡油生成和保存的重要条件。大民屯凹陷高蜡油纵向上主要分布在古潜山、沙四以及沙三下部;平面上主要分布在东胜堡潜山、静安堡潜山及静北广大地区,明显受“油页岩”的分布控制。The characteristics of source rocks and oil sources in Damintun Sag of Liaohe Basin were correlated. The origin and distribution of high-waxy and high-pour oil in Damintun Sag were analyzed. There exists two sets of oil source rocks distinguished in organic matter type and abundance, including ＂oil shale＂ and dark shale. The high-waxy oil generated from the ＂oil shale＂ ,while normal oil generated from the dark shale. The origins of high-waxy oil in Damintun Sag include high abundance organic matter, strong microbe reformation and low thermal developing history. The high-waxy oil occurs in the buried-hill, Es4 and the bottom of Es3 vertically. In the plane, it mainly distributes in the Dongshengpu buried-hill, Jing＇anpu buried hill and the north part of Jing＇anpu under the control of ＂oil shale＂.

关 键 词：辽河盆地 大民屯凹陷 高蜡油 油源对比 分布规律 

分 类 号：TE112.113[石油与天然气工程—油气勘探]