含蜡油井内部温度场的数值模拟分析  

Numerical simulation analysis of temperature field in waxy oil well

作　　者：马磊 王臣 王尔钧 张伟 梅明阳 任松涛 Ma Lei;Wang Chen;Wang Erjun;Zhang Wei;Mei Mingyang;Ren Songtao(CNOOC Zhanjiang Company,Zhanjiang 524057,China;Changzhou Institute of CNOOC Energy Development Shanghai Environmental Engineering Company,Zhanjiang 524057,China;Engineering technology Zhanjiang Branch of CNOOC Energy Development Co.,Ltd.,Zhanjiang 524057,China)

机构地区：[1]中国海油(中国)有限公司湛江公司,广东湛江524057 [2]中海能源发展常州院上海环境工程公司,广东湛江524057 [3]中国海油能源发展股份有限公司工程技术湛江分公司,广东湛江524057

出　　处：《炼油与化工》2021年第6期57-60,共4页Refining And Chemical Industry

摘　　要：对于含蜡油井,控制油井出口温度是防止管壁结蜡,提高油井开采效率的有效措施之一。为了研究涂层在油井保温防蜡方面的作用,需要对井筒内部温度场进行模拟计算,以获得保温涂层所需的导热系数和涂覆厚度。基于油管材质、内外径、热膨胀系数、导热系数、原油流速和对流换热系数等,利用Landmark软件对油管内流动温度场进行计算,获得保温涂层的最佳涂覆位置。结合涂层保温效果模拟数据,优化保温涂层导热性能、厚度和最佳涂覆长度,最终实现油管出口温度大于结蜡凝固点温度,大大提高了原油的传输效率。Controlling the outlet temperature of waxy oil well is one of the effective measures to prevent tube wall from forming wax and improve the production efficiency of oil well.In order to study the effect of coating on oil well insulation and wax prevention,it was necessary to simulate the temperature field inside the wellbore to obtain the thermal conductivity and coating thickness required by the insulation coating.Based on the tubing material,inner and outer diameter,CTE,thermal conductivity coefficient,crude oil flow rate and convective heat transfer coefficient,Landmark software was used to calculate the flow temperature field in the tubing and obtain the best coating position of insulation coating.Combined with the simulation data of the coating insulation effect,the ther⁃mal conductivity,thickness and the best coating length of the insulation coating were optimized,and finally the outlet temperature of the tubing was greater than the wax freezing point temperature,which greatly improved the transmission efficiency of crude oil.

关 键 词：油井防蜡 开采效率 保温涂层 模拟优化 

分 类 号：TE319[石油与天然气工程—油气田开发工程]