摘要
以岩心、测井分析为基础,结合区域地质背景、沉积特征等,确定扶余油田中城区扶余油层为一套浅水三角洲沉积,并在单井相分析的基础上建立了测井相识别模式。研究认为Ⅰ砂组主要为三角洲前缘沉积,识别出水下分流河道、河口坝、远砂坝、水下分流河道间湾、席状砂和湖泥等6种沉积微相;Ⅱ、Ⅲ、Ⅳ砂组主要为三角洲平原沉积,识别出分流河道、溢岸砂、决口扇、分流河道间湾等4种沉积微相。结合砂体以及沉积微相分布规律,总结了研究区沉积相模式,确定了砂体在空间上的分布特征和规律,研究结果表明:分流河道是油气的富集区和剩余油挖潜的最有利部位,为研究区剩余油进一步高效开发提供了技术支持。
Based on core and logging analysis, in combination with regional geology background and sedimentary characteristics, Fuyu oil layers in Zhongcheng area of Fuyu oilfield have been considered to be deposited in shallow water delta. Logging facies identification model has been established on single well facies analysis. The results show I sand group belongs to delta front deposit and six sedimentary microfacies, underwater distributary channel, mouth bar, distal bar, underwater interdistributary bay, sheet sand and prodelta mud, have been identified out. II, III and IV sand groups belong to delta plain deposit and 4 microfacies, distributary channel, overbank sand, crevasse-splay and interdistributary bay, have been identified out. Combined with sand body and sedimentary microfacies distribution regularity analysis, the sedimentary model of this area has been summarized and sand body distribution characteristics and regularity have been determined. The results show the distributary channel is favorable for hydrocarbon enrichment and potential tapping of remaining oil, which provides technology support for further effective development of remaining oil.
出处
《石油地质与工程》
CAS
2012年第5期5-8,12,共5页
Petroleum Geology and Engineering
基金
国家自然科学基金项目"吉林油田流动单元研究"(40872099)
关键词
扶余油层
沉积微相
三角洲前缘
三角洲平原
沉积模式
Fuyu oil layers
sedimentary microfacies
delta front
delta plain
sedimentary model