塔里木盆地下奥陶统蓬莱坝组沉积相研究

Sedimentary Facies of the Lower Ordovician Penglaizhen Formation,Tarim Basin

塔里木盆地寒武—奥陶系油气资源丰富,但目前勘探研究程度仍然较低,所以有必要对其进行深入研究。本次研究以测井资料、录井资料、地震资料及文献资料为基础,运用岩相古地理学、地震地层学、沉积岩石学等学科原理,利用单因素分析、地震相分析等方法对塔里木盆地下奥陶统蓬莱坝组进行沉积相研究,进而得出盆地蓬莱坝组沉积相的分布特征。研究显示蓬莱坝组发育局限台地、台地边缘、斜坡、缓坡及盆地5种沉积相。

In Tarim Basin, the Cambrian to Ordovician has abundant oil and gas resources. However, its exploration degree is still low. So, it's necessary to have a further research. Based on a lot of data from well logging, mud logging, seismic, and previous research, the sedimentary facies of the Lower Ordovician Penglaizhen Formation is studied by means of single-factor and seismic-facies methods, and some disciplinary theories such as lithofacies paleogeography, seismic stratigraphy, and sedimentary petrography. And the distribution features of facies are obtained. Results show that in this formation, there are five developed sedimentary facies, including restricted platform, platform margin, slope, gentle slope, and basin.