天然气水合物形成条件相关式的比较  

Comparison of the correlations of natural gas hydrate formation conditions

作　　者：涂多运 董勇 邓道明[2] 宫敬[2] 

机构地区：[1]中国石油集团工程设计有限责任公司西南分公司,四川成都610041 [2]中国石油大学(北京)油气管道输送安全国家工程实验室/城市油气输配技术北京市重点实验室,北京102249

出　　处：《油气储运》2014年第10期1071-1075,共5页Oil & Gas Storage and Transportation

基　　金：国家科技重大专项"煤层气田集输系统优化技术";2011ZX05039-002;国家科技重大专项"深水流动安全设计与流动管理技术";2011ZX05026-004-003;国家自然科学基金重点项目"深水环境下易凝高黏原油-天然气输送系统流动保障基础问题研究";51134006

摘　　要：水合物形成条件的预测方法有多种,采用数值方法拟合实验数据回归而来的相关式方法简单易行,方便工程应用。列举了?stergaard法、Towler-Mokhatab法、Ameripour法、BahadoriVuthaluru法和Zahedi-Karami-Yaghoobi法5种新型天然气水合物形成条件相关式,这些方法扩展了相关式法的预测范围,但适用条件各不相同。为考查这些公式对烃类流体的预测性能,将5种相关式编制成计算机程序,比较程序计算结果后推荐较优的水合物预测方法。比较预测结果和实验数据的结果表明:对于烃类流体,Towler-Mokhatab法和Bahadori-Vuthaluru法的预测性能相当,且均优于其他3种方法。There are a variety of methods to predict the hydrate formation conditions. The correlation regressed by fi tting the experimental data with numerical method is simple, practicable and convenient for engineering application. Five kinds of new correlations of natural gas hydrate formation conditions are cited in this paper, namely, ？stergaard, TowlerMokhatab, Ameripour, Bahadori-Vuthaluru and Zahedi-Karami-Yaghoobi. These methods extend the predicted range of the correlations, and can be applied in different conditions. To investigate the prediction performances of these fi ve correlations for hydrocarbon fl uid, they are compiled into computer programs. The optimal method is selected after comparing the results predicted with such programs. For hydrocarbon fl uid, the comparative results of the predicted results and experimental data show that the prediction performance of Towler-Mokhatab is similar to that of Bahadori-Vuthaluru, and these two methods are better than other three methods.

关 键 词：天然气水合物 形成条件 烃组分 气体相对密度 修正因子 相关式 

分 类 号：TE89[石油与天然气工程—油气储运工程]