松辽盆地榆树林—肇州地区葡萄花油层沉积相类型及沉积演化特征

运用薄片鉴定、粒度分析、岩心观察、测井分析和物性分析等方法,研究了松辽盆地榆树林—肇州地区葡萄花油层的岩石学特征、沉积构造特征、测井相类型、物性特征及含油性特征等。结果表明：榆树林—肇州地区葡萄花油层为河控三角洲沉积,可进一步划分为分流河道、天然堤、决口扇、分流间湾、水下分流河道、水下分流间湾、前缘席状砂及前三角洲泥等8种沉积微相类型。通过单井垂向层序、平面沉积微相及储层含油性与沉积微相类型关系的分析,认为葡萄花油层经历了早期基准面下降后期基准面上升的沉积演化过程,且沉积微相类型控制了储层的含油性。研究成果对该区岩性油气藏的勘探与开发具有重要指导意义。

Sedimentary types and evolution characteristics of Putaohua reservoir in Yushulin-Zhaozhou area, Songliao Basin

Based on the technologies of thin section identification, particle size analysis, core observation, logging analysis and physical property analysis, this paper studied the reservoir petrology characteristics, sedimentary structure characteris- tics, logging facies characteristics, physical properties and oil-bearing properties in in Yushulin-Zhaozhou area of Songliao Basin. The results show that the Putaohua reservoir in Yushulin-Zhaozhou area is fluvial delta facies, which can be further divided into eight microfacies, including distributary channel, natural levee, crevasse splay, interdistributary bay, subaqueous distributary channel, subaqueous interdistributary bay, frontal sheet sand and predeha mud. According to the analysis of the vertical sequence of single well, sedimentary microfacies and the relation between reservoir oil-hearing properlies anti mierofaeies types, it is believed that Putaohua reservoir experienced early hase level falling and later base level ascending evolution, anti microfacies types control the reservoir oil-hearing properties. This research resuh can provide technical support for the further efficient exploration and development in this area.