普光气田高含硫天然气粘度计算模型优选与评价

Optimization and Assessment on Model of Calculating Viscosity of High H_2S Natural Gas in Puguang Gas Filed

通过试验可以测定高含硫天然气的粘度,但费用高,危险性大。以室内试验数据和Elsharkawy提供的测试数据为基础,采用未校正的Dempsey模型、Lee模型、LBC模型、DS模型、Londono模型,以及YJS校正法、Standing校正法和Elsharkawy校正法,计算了普光气田高含硫天然气的粘度,并与试验测试值进行对比,评价出各种粘度计算模型的适应性。结果表明:Dempsey模型及Dempsey模型结合Standing校正方法计算普光气田高含硫天然气粘度较为准确,但随着H2S含量的增加,两种模型计算误差均随之增大,但校正后Dempsey模型的计算精度明显高于未校正模型。

The viscosity of high H2S gas could be detected by experiments,but it costed too much and had high risk.Based on experimental data and test data provided by Elsharkawy,uncorrected Dempsey model,Lee model,LBC model,DS model,Londono model,as well as the correction method of YJS,Standing and Elsharkawy correcting methods were used,the viscosity of high H2S natural gas of Puguang Gas Feld was calculated and compared with the test values,and then the adaptability of the calculating model for viscosity of high H2S natural gas was evaluated.The results show that Dempsey model and Dempsey model combined with Standing correction method to calculate viscosity of high H2S natural gas of Puguang Gas Field are relatively accurate,with the H2S content increases,calculation error of the two models increases,but the calculation accuracy of Dempsey model combined with Standing correction method is apparently higher than Dempsey model.