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结合鄂尔多斯盆地烟雾峁区域的构造背景及沉积演化历史,综合利用钻井取心、录井、测井等资料确定沉积相标志,通过测井相分析及沉积微相剖面、平面的展布特征,认识烟雾峁区块长6储层沉积微相的时空演化规律。通过研究认为烟雾峁区域长6储层主要发育有水下分流河道、水下分流河道侧翼、水下分流间湾三种沉积微相。此外沉积微相的分布控制着储层的发育,油气成藏和油藏类型明显受沉积相的影响,厚度大、连片性好的水下分流河道砂岩为其主要储集层。因此对本区的沉积微相研究清楚对认识烟雾峁区域的长6油气富集规律、指导下一步的勘探开发具有重要的意义。
Combined with the tectonic setting and evolution history of the Smog Zone in the Ordos Basin, the sedimentary facies markers are determined comprehensively by drilling coring, logging and logging data. Through the logging facies analysis and the distribution features of sedimentary microfacies and planes, Temporal and Spatial Evolution of Sedimentary Microfacies of Chang 6 Reservoir in the Smog Zone. According to the research, there are three kinds of sedimentary microfacies in the Chang 6 reservoir in the area of smog zone, mainly including underwater distributary channel, underwater distributary channel flank and underwater distributary bay. In addition, the distribution of sedimentary microfacies controls the development of reservoirs. The types of oil and gas accumulation and reservoir are obviously influenced by the sedimentary facies. The thick, well-contiguous underwater distributary channel sandstone is the main reservoir. Therefore, it is of great significance for the study of sedimentary microfacies in this area to understand the Chang 6 oil and gas enrichment law in the area of smoke stub and guide the further exploration and development.