金湖凹陷烃源岩“浅熟”原因探讨  

Study on "shallow maturation" of source rock in Jinhu Depression

作　　者：龚永杰[1] 何胜[2] 鲁雪松[3] 

机构地区：[1]中国石油大学,山东东营257061 [2]中石化胜利油田分公司,山东东营257051 [3]中石油勘探开发研究院,北京100083

出　　处：《特种油气藏》2008年第1期36-39,共4页Special Oil & Gas Reservoirs

摘　　要：苏北盆地金湖凹陷古近系烃源岩具有"浅熟"特征。从烃源岩成熟度指标、古温标测试数据等出发,在三垛组地层剥蚀厚度恢复和热演化史分析的基础上,对金湖凹陷烃源岩"浅熟"原因进行了初步探讨。分析认为特殊的埋藏历史是造成该区隆起带和外斜坡烃源岩"浅熟"的根本原因,三垛末期抬升运动是造成烃源岩热演化程度偏低的主要原因,而并不是"低熟油"或"未熟生烃"。The Paleogene source rock in Jinhu depression,Subei basin,is characterized by 'shallow maturation'.The cause of 'shallow maturation' of source rock in Jinhu depression is analyzed with data of source rock maturity index and palaeotemperature test on the basis of reconstruction of erosion thickness of Sanduo formation and analysis of thermal evolution history.It is pointed out that the basic reason for 'shallow maturation' in uplift zone and outer slope zone is its special burial history.The main reason for lower source rock maturity is late Sanduo uplift movement,and not 'immature oil' or 'hydrocarbon generation by immature source rock'.

关 键 词：烃源岩 剥蚀厚度 热演化 未熟油 金湖凹陷 

分 类 号：TE122.1[石油与天然气工程—油气勘探]