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南海东部某油田沙河街组储集层岩石结构复杂,层间差异明显,总体上为低孔低渗型储集层,使用传统的油气测井评价方法解释精度往往较低,常常造成油气层的漏解释或者误解释。依据岩心物性、毛管压力曲线等实验分析数据,以测井相分析为手段和桥梁对储集层进行分类分析,提出了以沉积微相砂体分类为单元的精细测井评价方法。应用此方法对该油田实际井进行测井解释结果表明,以该方法建立的测井解释模型具有较高的精度,为进一步提高储量计算和储集层表征的准确性奠定了基础。
The reservoir structure of the Shahejie Formation reservoir in the eastern South China Sea is complex with obvious differences between layers. Generally speaking, the reservoirs are low-porosity and low-permeability reservoirs. Interpretation accuracy using conventional oil and gas well logging evaluation methods is often low, often resulting in Leakage explanation or misinterpretation. According to the data of core properties, capillary pressure curve and other experimental data, the logging analysis is used as a means to classify the reservoirs, and a fine logging evaluation method based on sedimentary microfacies sandbodies is proposed. The logging interpretation of the actual well in this field shows that the logging interpretation model established by this method has higher accuracy and lays the foundation for further improving the calculation of reserves and the accuracy of reservoir characterization.