摘要
如何评价下古生界高过成熟烃源岩是当前急需解决的问题。笔者通过对塔里木、鄂尔多斯盆地和华北东部寒武系、奥陶系烃源岩的有机岩石学分析，确认其烃源岩中普遍存在镜状体，并通过热模拟实验建立了镜状体反射率与镜质体反射率之间的关系。
organic--petrological analyses of the samples collected respectively from the Tarim basin, the ordos basin andthe eastern North China region show that the vitrinite-like macerals are widely distributed in the highly/overmatured source rocks of the Lower Paleozoic. Thermal simulation experiments, in which some immature source rock samples were isothermally heated at the temperature ranging from 280℃ to 550℃ for 2hr, demonstrated that the vitrinite-like macerals respond to heating in a way similar to that of the vitrinite. Linear regression analyses show an excellen, posinive correlation (rorrelation coefficient= 0. 9447) between the reflectances of the vitrinite and those of thee vitrinite-like macerals, suggesting that the reflectance of the vitrinite-like macerals may be served as a possible thermal maturity index for highly/over-matured source rocks of the Lower Paleozoic.
出处
《石油勘探与开发》
EI
CAS
CSCD
北大核心
1995年第1期25-28,共4页
Petroleum Exploration and Development
关键词
成熟度
早古生代
烃源岩
油气勘探
镜状体反射率
organic matter maturity, Lower Paleozoic, Thermal simulation, Experimental data, Reflectance of vitrinite-like macerals
