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束鹿凹陷致密油储层岩性复杂,岩石结构和矿物成分多样,岩性识别困难。通过精细分析岩心资料与测井响应关系,建立了常规测井复合参数岩性识别图版,以及基于阵列声波、核磁和微电阻率扫描成像测井特征参数的岩性识别方法,编制了计算机程序,实现了4大类、9种岩性的自动判别,通过分析不同岩性孔隙结构、渗透性、脆性等参数特征,建立了储层优势岩石相的认识,为束鹿凹陷致密油储层综合评价奠定了基础。
The tight oil reservoirs in Shulu Sag are complex in lithology, the rock structure and mineral composition are diversified, and lithology identification is difficult. Through the careful analysis of the relationship between core data and well logging response, a lithologic identification plate of conventional well logging composite parameters and a lithology identification method based on array acoustic, nuclear magnetic and micro-resistivity scanning imaging logging parameters are established. A computer program is prepared, The classification of four types and nine lithologies is realized automatically. Based on the analysis of pore structure, permeability, brittleness and other parameters of different lithologies, the authors have established the understanding of the dominant lithofacies in the reservoir and made a comprehensive evaluation of the tight oil reservoirs in Shulu Sag Foundation.