石油勘探与开发2018，Vol.45Issue(2)：333-338,6.DOI:10.11698/PED.2018.02.17
深水油井测试工况下井筒结蜡区域预测方法
Prediction of wax precipitation region in wellbore during deep water oil well testing
摘要
Abstract
During deep water oil well testing,the low temperature environment is easy to cause wax precipitation,which affects the normal operation of the test and increases operating costs and risks.Therefore,a numerical method for predicting the wax precipitation region in oil strings was proposed based on the temperature and pressure fields of deep water test string and the wax precipitation calculation model.And the factors affecting the wax precipitation region were analyzed.The results show that:the wax precipitation region decreases with the increase of production rate,and increases with the decrease of geothermal gradient,increase of water depth and drop of water-cut of produced fluid,and increases slightly with the increase of formation pressure.Due to the effect of temperature and pressure fields,wax precipitation region is large in test strings at the beginning of well production.Wax precipitation region gradually increases with the increase of shut-in time.These conclusions can guide wax prevention during the testing of deep water oil well,to ensure the success of the test.关键词
深水油气开发/油井测试/井筒结蜡/温度场/压力场/结蜡区域预测Key words
deep water oil and gas development/oil well testing/wellbore wax precipitation/temperature field/pressure field/wax precipitation region prediction分类
能源科技引用本文复制引用
高永海,刘凯,赵欣欣,李昊,崔燕春,辛桂振,孙宝江..深水油井测试工况下井筒结蜡区域预测方法[J].石油勘探与开发,2018,45(2):333-338,6.基金项目
国家重点基础研究发展计划(973)项目(2015CB251205) （973）
教育部创新团队项目(IRT_14R58) （IRT_14R58）
国家重点研发计划(2016YFC0303303,2017YFC0307304) （2016YFC0303303,2017YFC0307304）
