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综合运用岩心观察、薄片鉴定、物性分析、测井分析及录井分析等技术手段对准噶尔盆地中部Ⅰ区块三工河组低渗透储层的沉积特征和成岩作用特征进行研究,划分出7种岩相类型和7种成岩相类型。将岩相类型与成岩相类型进行合理组合,共在研究区划分出12种沉积成岩综合相类型。在此基础上,利用自然电位、自然伽马、声波时差、密度、补偿中子及深感应电阻率测井曲线的组合特征,采用Fisher典型判别建立各沉积成岩综合相的定量判别函数、建立了测井参数交会图版、标定了单井沉积成岩综合相,并对识别结果进行了检验。将薄片鉴定与测井识别结果相结合,对单井沉积成岩综合相类型进行精细划分,对研究区储层沉积成岩综合相类型的分布规律进行预测。
The sedimentary characteristics and diagenetic characteristics of the low permeability reservoirs in the Sangonghe formation in Block Ⅰ, Central Junggar Basin, were comprehensively studied by using core observation, thin slice identification, physical property analysis, log analysis and logging analysis. Seven types Fossil facies types and seven diagenetic facies types. The lithofacies types and diagenetic facies types are reasonably combined, and a total of 12 types of sedimentary diagenetic complex facies are distinguished in the study area. Based on this, the quantitative discriminant function of sedimentary diagenetic synthetic facies was established by Fisher’s typical discriminant using the combination of natural potential, natural gamma ray, time lag, density, compensated neutron and deep resistivity resistivity logs, and established Logging parameters of the intersection plan, calibration of a single sedimentary sedimentary facies, and the identification results were tested. By combining the identification of thin slices and logging identification results, the types of sedimentary diagenetic complex facies in single well are finely divided and the distribution regularity of reservoir sedimentary diagenetic complex facies in the study area is predicted.