摘要
针对前人提出锦州25-1南油田沙河街组二段为来自渤海辽东湾海域的辽西低凸起的扇三角洲沉积的观点,结合区域沉积背景、构造演化以及古地貌特征,充分运用岩心、测井、地震和重矿物等资料,综合分析认为锦州25-1南油田沙河街组二段属于双物源沉积,其北方的物源主要来自西北的古东沙河,西南方向的物源主要来自辽西低凸起的西南部。油田范围内仅发育辫状河三角洲前缘亚相沉积,共识别出辫状河三角洲前缘水下分流河道、支流间湾、河口坝、水下溢岸、远砂坝和席状砂共6种微相,其中水下分流河道和河口坝两种微相的储集性能最好,是后期开发井井位部署的最为有利的储集相带。
The second member of Shahejie formation in Jinzhou 25-1 Nan-oilfield was considered to come from the low raised fan delta sedimentary in Liaodongwan waters of Bohai Sea.Aiming at this previous view,in combination with regional sedimentary background,the tectonic evolution and the characteristics of geomorphology,through comprehensive analysis,the results indicate the second member of the Shahejie formation in Jinzhou25-1 Nan-oilfield belongs to double sources sedimentary system.The provenance source in the north mainly comes from northwestern Gudong Shahe and the provenance source in the south mainly comes from southwestern low raised of Liaoxi.Among the oilfield,it only developed the braided river delta front subfacies deposition,and there are six kinds of microfacies,namely underwater distributary channel,between tributary bay,mouth bar,underwater shore,far sand dam and sand sheet.Among them the underwater distributary channel and mouth bar are the best ones for best reservoir performance and the most favorable reservoir facies belt for well deployment in the later period.
出处
《石油地质与工程》
CAS
2015年第6期37-40,66,共5页
Petroleum Geology and Engineering
关键词
锦州25—1南油田
沙河街组
辫状河三角洲
扇三角洲
沉积特征
Jinzhou 25-1 Nan-oilfield
shahejie formation
braided river delta
fan delta
sedimentary characteristics
