【作者】 孙东方；

【导师】 康万利； 李学军；

【作者基本信息】 大庆石油大学 ， 石油与天然气工程， 2006， 硕士

【摘要】 对江37区块稠油及稠油乳状液的黏温关系进行了拟合,稠油的析蜡点为50℃,析蜡点前后,在半对数坐标系中,黏温曲线分别为直线,回归系数较高。在半对数坐标系中,稠油乳状液的黏温曲线基本成直线关系,表明稠油乳状液的黏度与温度呈对数关系。对江37稠油进行热化学脱水实验,得出结论:江37稠油可以采用两段热化学脱水工艺进行脱水。一段热化学沉降脱水工艺参数:脱水温度为70℃;破乳剂型号为H012;加药量为150mg/L;沉降时间为24h;脱后油中含水率为20%;脱后水中含油为1000mg/L。鉴于沉降时间较长,稠油油气比很低,建议一段热化学沉降脱水采用常压立式沉降罐。二段热化学沉降脱水工艺参数:脱水温度为85℃;破乳剂型号为H012;加药量为150mg/L;沉降时间为48h;脱后油中含水率为1%;脱后水中含油为1000mg/L。鉴于沉降时间较长,稠油油气比很低,建议二段热化学沉降脱水采用常压立式沉降罐。对江37稠油进行了电化学脱水实验,建议开展二段电化学脱水现场试验,力争在下列条件下实现电化学脱水:采用竖挂电极结构;脱水温度为70℃;破乳剂型号为H012;加药量为50mg/L;电场脱水时间为30min;交流电场按200V/cm、直流电场强度按1500~2000V/cm;脱后油中含水率为1%;脱后水中含油为1000mg/L;电脱水器建议采用卧式压力容器。电脱水变压器和控制设备除保留原有功能外,建议增加自动调整加载电压功能。鉴于稠油中胶质含量较高,导电能力较强,加载困难,建议开展脉冲电场脱水试验。更多还原

【Abstract】 Relationship between viscosity and temperature of heavy oil and heavy oil emulsion is matched. Wax precipitation point of heavy oil is 50℃. Up and down wax precipitation point, curves of viscosity-temperature are straight lines respectively under semilog coordination, and regression coefficient is high. Under semilog coordination, curve of viscosity-temperature of heavy oil emulsion generally has a linear relationship, showing that relationship between viscosity and temperature of heavy oil emulsion is logarithmic.Heating-demulsifier dehydration experiment is carried out using heavy oil emulsion of Jiang37 block. It shows that two stage heating-demulsifier dehydration technology can be used to dispose Jiang37 heavy oil emulsion. Technological parameters of first stage heating-demulsifier settling dehydration are that dehydrating temperature is 70℃, type of demulsifier is H012, dosage of demulsifier is 150mg/L, settling time is 24h, water cut of dehydrated oil is 20%, and concentration of oil in dehydrated water is 1000mg/L. Technological parameters of second stage heating-demulsifier settling dehydration are that dehydrating temperature is 85℃, type of demulsifier is H012, dosage of demulsifier is 150mg/L, settling time is 48h, water cut of dehydrated oil is 1%, and concentration of oil in dehydrated water is 1000mg/L. Whereas settling time is long, and gas-oil ratio is very low, it is suggested that heating-demulsifier settling dehydration is to use atmospheric vertical settling tank.electric-demulsifier dehydration experiment is carried out using heavy oil emulsion of Jiang37 block. It is suggested carrying out two-stage electric-demulsifier dehydration in-situ test, parameters of electric-demulsifier dehydration are that electrode is vertical, dehydrating temperature is 70℃, type of demulsifier is H012, dosage of demulsifier is 50mg/L, dehydrating time of electric field is 30min, alternating current electric field strength is 200V/cm, direct current electric field strength is 1500~2000V/cm, water cut of dehydrated oil is 1%, and concentration of oil in dehydrated water is 1000mg/L, and it is better to use vertical pressure vessel. It is better to make electric dehydration transformer regulate load voltage automatically. Whereas resin content is high in heavy oil, and loading is difficult due to strong conductive ability of resin, it is suggested to carry on pulse electric field dehydrating test.更多还原