摘要
采用镜下传统方法测得澳大利亚Eromanga盆地白垩系Toolebuc页岩的镜质体反射率偏低,未达到生烃门限,但现场油气显示情况表明,Toolebuc页岩已进入生烃门限,传统方法测得的镜质体反射率不能反映该区域Toolebuc页岩的真实成熟度。分析研究认为,Toolebuc页岩干酪根类型以Ⅰ、Ⅱ型为主,Ⅲ型很少,且显微组分中镜质体含量比较低,因此,传统方法测得的镜质体反射率不能反映该区域Toolebuc页岩的真实成熟度。采用激光拉曼光谱多种显微组分荧光变化分析法(FAMM)及盆地模拟的方法对该区域Toolebuc页岩成熟度进行了新的评价,评价结果显示,Toolebuc页岩成熟度能达到0.7%以上,已进入生烃门限,与实际情况比较吻合。
The vitrinite reflectance of Toolebuc shale of Cretaceous in Eromanga Basin,Australia measured using traditional microscopical method is low,which shows that Toolebuc shale does not reach to hydrocarbon generation threshold,but oil and gas shows indicate that Toolebuc shale has reached to hydrocarbon generation threshold. Therefore the vitrinite reflectance measured using traditional microscopical method does not reflect the real maturity of Toolebuc shale. According to the study in this paper,it is held that,the kerogen of Toolebuc shale is mainly I-II types,the kerogen of III type is rare,and the vitrinite content in maceral is so low that the vitrinite reflectance measured using the traditional microscopical method can't reflect the real maturity of Toolebuc shale in this region. So the maturity of Toolebuc shale in the region is evaluated again using laser Raman spectra varieties of maceral fluorescence changes analysis( FAMM) and basin simulation,and it is shown that the maturity of Toolebuc shale can reach more than 0. 7%,Toolebuc shale has reached to hydrocarbon generation threshold,which is consistent with the actual situation.
出处
《西安石油大学学报（自然科学版）》
CAS
北大核心
2014年第2期25-28,5,共4页
Journal of Xi’an Shiyou University（Natural Science Edition）
基金
中国海油青年科技与管理创新课题(编号:JZTW2012KJ45)
