长江大学学报（自然科学版）2025，Vol.22Issue(6)：1-8,8.
轮南油田低阻油层饱和度计算方法研究
Study on the saturation calculation method of low-resistivity oil layer in Lunnan Oilfield
摘要
Abstract
The Jurassic low-resistivity reservoirs in Lunnan Oilfield are developed and have complex and diverse causes,and the oil saturation value calculated by conventional methods is low,which makes it difficult to effectively identify fluids and evaluate reservoirs.In order to solve this problem,the geological structure of the region was analyzed,and according to the analysis data of formation water and heavy minerals,combined with logging and logging data,the main causes of low resistance are low tectonic amplitude,high formation water mineralization degree,high bound water saturation and the presence of conductive minerals such as pyrite.Considering the above factors,by analyzing the conductivity laws in the formation,a framework conductivity water saturation model is established.At the same time,combined with the capillary pressure curve data,according to the reservoir grade classification standard,the J-function method was used to obtain the average capillary pressure curve reflecting the reservoir characteristics,which was converted into the reservoir height and water saturation chart,and the water saturation calculation model of the average capillary pressure method was established.Compared with the traditional methods,the conductive water saturation calculation model and the average capillary method water saturation calculation model can effectively improve the calculation accuracy of saturation in low-resistivity oil layers.When actually applied in the evaluation of low-resistivity oil layers in Lunan Oilfield,the oil saturation results calculated by the new model have a high degree of agreement with the test oil results in the study area.It is of great significance for the saturation evaluation of low-resistivity reservoirs in Lunan Oilfield.关键词
低阻油层/电阻率模型/平均毛细管法/低阻成因/黄铁矿/轮南油田Key words
low-resistivity oil layer/resistivity model/average capillary method/low-resistivity genesis/pyrite/Lunnan Oilfield分类
能源科技引用本文复制引用
章成广,黄扬,张博,罗慎超,张远君,张磊,蔡明..轮南油田低阻油层饱和度计算方法研究[J].长江大学学报（自然科学版）,2025,22(6):1-8,8.基金项目
国家自然科学基金项目"致密储层裂缝有效性的双尺度声波测井评价方法研究"(42104126) （42104126）
中国石油科技创新基金项目"超深裂缝型各向异性地层声波测井响应机理实验研究"(2022DQ02-0301) （2022DQ02-0301）
湖北省教育厅科技项目"鄂西页岩气藏水平井中声波测井响应正演模拟研究"(Q20211309). （Q20211309）
