摘要
针对新疆风城超稠油长距离管道的输送难题,结合超稠油特性及下游克拉玛依石化公司的加工工艺要求,对比分析了掺稀输送工艺常用稀释剂的优势与不足,提出了风城超稠油掺柴油降粘输送方法。以风重010井与重59井原油为研究对象,采用流变学法与瓶试法,同时依据相关测试标准,测试分析两种原油脱水前后的基本性质、流变特性与粘温特性,评价其掺柴油的脱水效果及其脱水前后掺柴油的降粘效果。结果表明:两种风城原油属于典型的超稠油,选用0#柴油作为稀释剂具有明显的安全经济优势;两种超稠油掺0#柴油不仅可以显著降低其表观粘度,而且有助于脱水;在0#柴油掺入体积分数为20%~25%、输油温度为80~90℃的条件下,两种超稠油掺混0#柴油处理后均具有较好的流动性与可泵送性。
In allusion to the characteristics of Fengcheng ultra-heavy oil produced in Xinjiang Oilfield and its problems in long-distance pipelining,considering the current process requirements of Karamay Petrochemical Company,the advantage and disadvantages in common diluents used in blending transport technology are analyzed and a new transport method of the ultra-heavy oils diluted with #0 diesel to reduce their viscosity is proposed.Regarding Fengcheng's 010-Well and 59-Well as a research subject,the basic compositions and properties,rheological behaviors and viscosity-temperature behaviors of their samples with and without water were tested and analyzed using the rheological and bottle-test methods and related test standards,and the dehydration of two ultra-heavy oils and viscosity reduction of their samples with and without water under the dilution of #0 diesel were evaluated.The results showed that two Fengcheng oils belonged to typical ultra-heavy oils,and choosing light diesel as their diluent had distinct safety and economic advantage.Diluting the heavy oils with #0 diesel could not only reduce their viscosity significantly,but also was helpful for their dehydration.The heavy oils diluted with 20 v%~25 v% #0 diesel showed a good ? owability and pumpability under the temperature range of 80~90 ℃.
出处
《油气储运》
CAS
北大核心
2011年第10期768-770,716,共3页
Oil & Gas Storage and Transportation
基金
国家自然科学基金资助项目"稠油流动边界层在水基泡沫作用下的阻力特性研究"
5170136
关键词
超稠油
掺柴油
降粘
管道
长距离输送
脱水
ultra-heavy oil,blending with diesel,viscosity reduction,long-distance transportation,dehydration