渤海稠油油藏原油黏温关系研究

选取渤海油田地面50℃脱气原油黏度366.4~72 477.0mPa·s的黏温曲线进行拟合,结果表明ASTM标准二次对数坐标下,各样本的直线拟合关系良好,各直线的斜率近似相同,并进一步得出了渤海稠油黏度预测公式,根据50℃地面原油黏度可以预测其他温度时的脱气原油黏度。将计算得出的地层温度下的脱气原油黏度与已有的PVT实验数据进行对比,通过数据回归,得出了地层含溶解气的原油黏度预测公式,可为渤海稠油油藏开发方案设计提供参考。

Research on the relationship between viscosity-temperature of heavy oil reservoirs in Bohai sea

The viscosity-temperature curve of ground tank oil viscosity 50 ℃ at 366.4 ~ 72 477.0m Pa o s in Bohai sea has been selected to conduct fitting.The results show that under the ASTM standard secondary logarithmic coordinates,the linear fitting of each sample is of good relations,the slope of each line is approximately the same,and then the heavy oil viscosity prediction formula has been further obtained.According to 50 ℃ ground oil viscosity,the other degassing viscosity under other temperatures can be predicted.Comparing the calculated dead oil viscosity at reservoir temperature with the existing PVT experimental data,through data regression,the crude oil formations containing dissolved gas viscosity prediction formula has been obtained,which can provide good reference for the development plan of heavy oil reservoirs in Bohai sea.