摘要
采用流体包裹体技术,利用包裹体的均一温度,结合地层的埋藏史和热史,研究了该盆地具有代表性的三叠系长6油层组油藏的成藏年代.分析表明:研究区三叠系长6油层组烃类包裹体非常发育,且与烃类包裹体共生的盐水包裹体的均一温度主要为105～115℃.根据埋藏史和热演化史分析结果,最终确定鄂尔多斯盆地下寺湾地区三叠系延长组油藏为一期成藏,其成藏时间距今约110～125 Ma,为早白垩世晚期.
Applying the fluid inclusion technology, utilizing homogeneous temperature of inclusion and referring to the burial history of formation and the thermal evolution history of Ordos basin, the age of hydrocarbon accumulation in triassi Chang-6 formation was determined. Hydrocarbon inclusions developed fully in triassi Chang-6 formation and the homogeneous temperature of brine inclusions associated with hydrocarbon inclusions is mainly 105-115℃. On the basis of the analysis of burial history and thermal evolution history, it is ultimately determined that the time of hydrocarbon accumulation is of the first phase in this area, and the age of accumulation is 110-125 Ma ago, which is near the late early cretaceous.
出处
《兰州大学学报（自然科学版）》
CAS
CSCD
北大核心
2010年第2期22-25,共4页
Journal of Lanzhou University(Natural Sciences)
基金
陕西省自然科学基础研究计划项目(2009JM5002)
关键词
成藏年代
流体包裹体
均一温度
三叠系延长组
下寺湾地区
鄂尔多斯盆地
age of accumulation
fluid inclusion
homogeneous temperature
triassic Yanchang formation
Xiasiwan area
Ordos basin
