利津—民丰Es^4-Ek气源岩生烃时空有效性分析  

THE RESEARCH ON THE TIME AND SPACE VALIDITY OF HYDROCARBON GENERATION IN Es^4-Ek GAS SOURCE ROCKS,LIJIN AND MINFENG AREA

作　　者：蔡东梅[1,2] 蒋有录[1] 刘华[1] 徐昊清[1] 孙立东[3] 

机构地区：[1]中国石油大学地球资源与信息学院,山东东营257061 [2]中国石油大学资源与信息学院,北京昌平102249 [3]大庆油田有限责任公司勘探开发研究院,黑龙江大庆163712

出　　处：《西南石油大学学报（自然科学版）》2008年第6期14-17,共4页Journal of Southwest Petroleum University(Science & Technology Edition)

基　　金：国家"十五"科技攻关项目(2001BA605A09)

摘　　要：根据热流史的恢复结果对利津—民丰地区沙四上亚段、沙四下亚段第一、二、三套和孔二段5套主力气源层的成烃史进行了研究。热流史恢复结果表明,自新生代以来,古地温梯度呈逐渐下降的趋势,孔一早期为5.28℃/100m,降至现今为3.60℃/100m;不同层段、不同构造部位的气源岩演化具有明显的差异性,沙四上亚段气源岩现今开始大量生油和伴生气;沙四下亚段第一套气源岩主要生裂解气时期为馆陶组沉积末期至今;孔二段气源岩主要生裂解气时期为沙一沉积时期至今。Based on the hydrothermal history reconstruction,the hydrocarbon generation history is investigated for Es4-Ek formation,Lijin and Minfeng area.The hydrocarbon history reconstruction shows that the paleogeothermal gradients decreased from Cenozoic era on,the value was 5.28℃/100m at the late stage of Kongdian Formation and then decreased to the present value averaging 3.60℃/100m.The gas source rocks evolution are various in different formations and tectonic positions,the associated gas generation stage of upper Es4 gas source rocks starts at the the present,the pyrolysis gas generation stage of lower Es4 gas source rocks has prolonged from late Guantao Formation deposition to now and the pyrolysis gas generation stage of Ek2 gas source rocks has lasted from Es1 group deposition to nowadays.

关 键 词：利津-民丰地区 气源岩 热演化 成烃史 

分 类 号：TE122[石油与天然气工程—油气勘探]