塔河油田西北部奥陶系原油成熟度特征研究

Maturity Characteristics of Ordovician Crude Oil in Northwest of Tahe Oilfield

准确评价原油成熟度是划分原油成因类型的重要基础。运用反映原油整体面貌及反映原油组成的成熟度参数对塔河油田西北部奥陶系原油进行了综合研究。塔河油田原油成熟度下限在Ro(镜质组反射率)=0.8%左右,上限在Ro=1.10%左右,早期充注的原油为正常成熟原油,后期充注的是成熟度较高的原油。

Accurate assessment of crude oil maturity is an important foundation of dividing the genetic types of crude oil.The multi-parameters reflecting the characters of crude oil are used to study the maturity of Ordovician crude oil in northwest of Tahe Oilfield and it is considered that the lower limit maturity of crude oil on the vitrinite reflectance is about 0.48% and the upper limit is about 1.10%,the early filling oil is normal mature crude oil and the later is the higher maturity of crude oil.