姬塬地区罗1井区长81油层组沉积相特征

摘要：姬塬地区位于鄂尔多斯盆地陕北斜坡中西部。与研究区其他层位相比，目的层长81油层属于新层系，虽经多年资料累积和研究，前人学者仍对其沉积相类型存在较大分歧，研究基础相对薄弱。本文通过岩心观察、薄片鉴定、测井曲线等资料的综合分析，结合前人研究成果，总结研究区目的层的沉积特征，从而判定姬塬地区罗1井区上三叠统长81油层组为浅水三角洲沉积体系，沉积相类型包括三角洲前缘亚相和三角洲平原亚相，并对其沉积特征和剖面结构进行讨论，进而预测其沉积相的平面展布特征。

The Characters of Sedimentary Facies in Chang 81 Oil Layers of LUO 1 Wells,Jiyuan Area

Jiyuan region located in the mid-western of northern slopes,Ordos Basin.Compared to other layers,the Chang 81 oil layer is belong to new formations.Despite accumulated data and research of many years,previous scholars still have considerable differences and the research base is relatively weak.By means of cores,thin section,well logs,etc,comprehensive analysis,combined with previous research results,the sedimentary characteristics of study area is summarized,which determine that Chang 81 oil layers of Upper...