稠油掺稀井系统分析研究与应用  

Analysis and Application of Heavy Oil by Mixing Light Oil

作　　者：朱国[1] 李颖川[2] 刘兴国[1] 

机构地区：[1]中石化西南油气分公司川东北采气厂,四川南充637400 [2]油气藏地质及开发工程国家重点实验室(西南石油大学),四川成都610500

出　　处：《石油天然气学报》2013年第10期112-115,8,共4页Journal of Oil and Gas Technology

基　　金：国家科技重大专项(2008ZX05049-004-001)

摘　　要：新疆塔河油田的稠油油藏,以掺稀油降黏方式开采为主。根据传热学、能量及物质平衡原理,综合考虑稠油井筒中压力、温度之间的相互作用,建立了稠油掺稀井井筒流体压力-温度耦合数学模型,并以此为基础,建立了以掺稀深度为节点的稠油掺稀自喷井系统分析模型,优化了掺稀比、油管管径和掺稀点深度等参数。以塔河油田某井为例进行的计算表明,压力-温度耦合模型得出的压降平均误差为2.6%,温降平均误差为8%;优化得出的最优掺稀比与现场不同产量下掺稀量得出的比值相符。The reservoirs in Block 10of Tahe Oilfield were deeply buried between 5500mand 6000m,the reservoir viscosity was as high as 10~1000Pa·s under 50℃,and the main production method was viscosity reduction by mixing light oil.A coupling analysis model for the pressure and temperature in heavy oil wellbore was established based on the principles of heat transfer,energy and material balance and synthetically considering the interrelation between the pressure and temperature;then nodal system model for mixing light oil was established,the parameters of mixing ratio,tubing diameter and depth of mixing light oil were optimized.By taking Tahe Oilfield for example,the calculated results indicate that the average error of pressure drop obtained by coupling model is 2.6%,average error of temperature drop is 8%;and optimized ratio is agreed with that in the oilfield.

关 键 词：稠油 掺稀 耦合模型 节点系统分析 敏感性分析 

分 类 号：TE345[石油与天然气工程—油气田开发工程]