佟远萍
TONG Yuanping

• 1:大庆油田有限责任公司勘探开发研究院

摘要(Abstract)：

齐家北地区扶余油层具有较大的油气勘探潜力,具备形成规模储量的地质基础。为了研究有利储层的分布规律,综合利用岩心、录井、测井以及分析化验等资料,分析了该区扶余油层沉积微相类型、沉积特征及演化规律,并开展了沉积相带对油藏控制作用研究。通过建立的浅水三角洲—滨浅湖沉积体系的3种亚相9种微相的识别标准,搞清了沉积演化规律;最有利于油气聚集的微相类型是水下分流河道砂体,其次为席状砂、河口坝以及三角洲平原的分流河道砂体。根据沉积砂体类型与断裂、构造的匹配关系,划分了三角洲外前缘砂体的岩性油藏带和分流河道、内前缘砂体的断层—岩性油藏带两类有利成藏区。研究成果深化了齐家北地区沉积相认识,为油气勘探提供了理论依据。
Fuyu oil reservoirs in Qijiabei area have a great hydrocarbon exploration potential and possess the geological foundation for forming large-scale reserves. In order to study the distribution laws of the favorable reservoir, making comprehensive use of the core, mud logging, well logging and experimental data, the sedimentary microfacies types, sedimentary characteristics and evolution laws of the reservoirs in the area were analyzed, and moreover the controlling effects of the sedimentary facies on the oil reservoir were researched. The achievements show that with the help of the established identifying criteria of 9 microfacieses and 3 subfacieses of the shallow delta-shore shallow lake sedimentary system, the sedimentary evolution laws were ensured; the underwater distributary channel sandbodies are the most beneficial reservoir to the oil and gas accumulation, which are followed by the sheet sand, mouth bar and distributary channel sandbodies of the delta plain.According to the matching relationship between the types of the sedimentary sandbody and the fault as well as the structure, two types of favorable hydrocarbon accumulation area were divided, namely, the lithologic reservoir belt formed by the sandbody at the delta outer-front and the fault-lithologic reservoir belt formed by the sandbody at the distributary channel and delta inner-front. The study results have deepened the understandings of the sedimentary facies in Qijiabei area and furthermore provided the theoretical evidences for the exploration of the oil and gas.

关键词(KeyWords)： 松辽盆地北部;齐家北地区;扶余油层;沉积特征;沉积相;有利成藏区
North Songliao Basin;Qijiabei area;Fuyu oil reservoirs;sedimentary characteristic;sedimentary facies;favorable hydrocarbon accumulation area

Abstract:

Keywords:

基金项目(Foundation): 国家“十三五”科技重大专项“重点盆地致密油资源潜力、甜点区预测与关键技术应用”(2016ZX05046-006)

作者(Author): 佟远萍
TONG Yuanping

DOI: 10.19597/j.issn.1000-3754.201912010

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