潜油电泵井油套环空泵上掺稀油井筒流体温度模型  

Wellbore Fluid Temperature Model for Blending Light Hydrocarbon above Pump in Tubing-Casing Annular Space in ESP Wells

作　　者：陈德春 李昂 高莉[3] 朱泽军[4] 姜东[4] 

机构地区：[1]中国石油大学石油工程学院,山东青岛266580 [2]中国海油能源发展股份有限公司钻采工程研究院,天津300452 [3]中国石化西北油田分公司采油三厂,新疆库尔勒841000 [4]中国石化胜利油田分公司采油工艺研究院,山东东营257000

出　　处：《新疆石油地质》2013年第5期591-594,共4页Xinjiang Petroleum Geology

摘　　要：针对深层稠油井筒流动性差、举升效率低的问题,结合潜油电泵高排量、使用范围广以及管理方便的特点,研究了潜油电泵井在油套环空泵上掺稀油举升工艺。综合考虑潜油电机以及电缆散热作用和掺入稀油参数的影响,基于热能守恒原理,推导建立了潜油电泵井油套环空泵上掺稀油井筒流体温度计算模型,分析了掺入稀油温度、稀油量以及掺稀点深度对掺入稀油的混合流体的温度分布的影响。研究结果表明,提高井口掺入稀油的温度可提高井筒产出液的井口温度,有利于原油地面集输;随着掺入稀油量的增加,掺入稀油的混合流体的温度在近井口段升高,在靠近掺稀点深度处略有降低;增加掺稀点深度,掺入稀油的混合流体的温度略有降低,并且沿着掺稀点至井口的方向,降温幅度越来越小。该研究对于潜油电泵井油套环空泵上掺稀油举升工艺参数的优化具有重要的理论和应用价值。In view of characteristics of large discharge capacity, wide application and convenient management of eleetrieal submersible pumping （ESP）, combining with poor lifting efficiency and low wellbore flowing in deep heavy oil reservoir, the technology fur blending light hydrocarbon above pump in tubing-casing annular space in ESP wells is studied. The influences of the thermolysis of submersible mutur, cable and parcroeters of blending light hydrocarbon are comprehensively eonsidered. According to the law of the conservation of heat ener- gy, a temperature ealculation model for blending light hydrocarbon above pump in tubing-casing annular spaee in ESP wells is developed. The influences of temperature and volume of blending light hydrocarbon and diluting depth on the temperature distribulion of wellbore mixed fluid are analyzed. The study shows that with increasing of temperature of blending light hydrocarbon, the temperature of output fluid closed to the wellhead increases, it is favorable for surface transportation of crude oil. With increasing of the volume of blending light hydro- carbon, the temperature of output fluid closed to the wellhead inereases, while that of closing to diluting depth decreases slightly. Output fluid temperature also decreases slightly with the addition of diluting depth, but almost maintains from diluting depth to wellhead. This study has important values of theory and application for optimization of such lifting technology parameters.

关 键 词：掺稀油 降黏 温度计算模型 潜油电泵井 深层稠油 

分 类 号：TE355.52[石油与天然气工程—油气田开发工程]