油井结蜡规律及热洗方式对比研究  

Rules of paraffin deposit and comparative study on hot washing technology

作　　者：林日亿[1,2] 张建亮 李轩宇 王新伟[1] 杨勇 许德广[6] 张江[6] LIN Riyi;ZHANG Jianliang;LI Xuanyu;WANG Xinwei;YANG Yong;XU Deguang;ZHANG Jiang(College of New Energy in China University of Petroleum(East China), Qingdao 266580, China;Shandong Provincial Key Laboratory of Oil & Gas Storage and Transportation Safety, China University of Petroleum(East China), Qingdao 266580, China;China Oilfield Services Limited,Tianjian 300459, China;Liaohe Thermal Mining Machinery Manufacturing Branch of CNPC Bohai Petroleum Equipment Manufacturing Company Limited, Panjin 124209, China;New Energy Development Center of Shengli Petroleum Administration Company Limited, SINOPEC, Dongying 257000, China;Xianhe Oil Production Plant of Shengli Oilfield Branch Company, SINOPEC, Dongying 257000, China)

机构地区：[1]中国石油大学(华东)新能源学院,山东青岛266580 [2]中国石油大学(华东)山东省油气储运安全省级重点实验室,山东青岛266580 [3]中海油田服务股份有限公司,天津300459 [4]中国石油集团渤海石油装备制造有限公司辽河热采机械制造分公司,辽宁盘锦124209 [5]中国石化集团胜利石油管理局有限公司新能源开发中心,山东东营257000 [6]中国石化胜利油田分公司现河采油厂,山东东营257000

出　　处：《中国石油大学学报（自然科学版）》2022年第1期155-162,共8页Journal of China University of Petroleum(Edition of Natural Science)

基　　金：国家自然科学基金项目(51874333);中央高校基本科研业务费专项(19CX02014A)。

摘　　要：针对某油田史深100区块油井结蜡较严重现象,进行结蜡规律试验研究和井筒温度场模拟。在黄启玉等的结蜡模型基础上,通过旋转式原油结蜡试验确定油样的结蜡模型参数,结合Fluent模拟得到管壁处径向温度梯度及切应力,获得井史3-3-11结蜡速率计算公式,从而预测不同热洗方式不同天数下对应的结蜡量。同时建立热洗井筒流动换热模型并通过VB编程计算井筒温度场分布,分析不同的注水温度、注水流量对井筒温度场及热洗时间、用水量的影响。结果表明因井筒沿程热损失较大,提高注水温度和注水量均能降低热洗时间,提高油管内温度场,但敏感性逐渐降低;当注水温度为80℃,注水流量为2 t/h时,单次热洗的费用最低且热效率最高。In view of the serious wax deposition in Shi 3 block in a certain area,the experimental study on the wax deposition rules and the simulation of wellbore temperature field were carried out.Based on HUANG Qiyus waxing model,the parameters in the waxing deposition model were determined by the results of the rotary crude oil waxing deposition experiment.The radial temperature gradient and shear stress on the tube wall were obtained by the Fluent simulation,and the calculation formula of the well 3-3-11 waxing deposition rate was obtained.The amount of wax deposition for different days was determined under different heat washing methods.The wellbore temperature field model was established and the wellbore temperature field distribution was solved by the VB programming.The effects of different water injection temperature and water injection flow rate on the wellbore temperature field,hot washing time and water consumption were analyzed.The results show that due to the large heat loss along the wellbore,increasing the water injection temperature and water injection volume can reduce the hot wash time and increase the temperature field in the tubing,but the sensitivity gradually decreases.When the water injection temperature is 80℃and the water injection flow rate is 2 t/h,the cost of a single hot wash is the lowest and the thermal efficiency is the highest.

关 键 词：稠油开采 结蜡试验 流动传热模型 空心杆热洗 套管热洗 

分 类 号：TE53[石油与天然气工程—油气田开发工程]