文章摘要
一种降粘剂在体相中的分配规律
Distribution Regulation in Different Phases of a Novel Viscosity Reducer
投稿时间:2017-11-06  修订日期:2018-01-21
DOI:
中文关键词: 降粘剂  分布规律  检测方法  高效液相色谱  乳液体系
英文关键词: viscosity reducer  distribution regulation  detection method  high-performance liquid chromatography  emulsion system
基金项目:国家科技重大专项“高温高盐油田化学驱提高采收率技术”(项目编号2016ZX05011-003)。
作者单位E-mail
石 静 中国石化胜利油田分公司勘探开发研究院 dzyshijing100@163.com 
王红艳 中国石化胜利油田分公司勘探开发研究院  
郭淑凤 中国石化胜利油田分公司勘探开发研究院  
郭 勇 中国科学院兰州化学物理研究所西北特色植物资源化学重点实验室  
王 帅 中国科学院兰州化学物理研究所西北特色植物资源化学重点实验室 shuaiw@licp.cas.cn 
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中文摘要:
      降粘剂的浓度分析检测方法及检测结果对其种类设计和实施方法有着重要的指导意义。为了实现胜利油田使用的一种新型降粘剂的浓度检测,建立了可准确分析水相、油相中该降粘剂浓度的疏水高效液相色谱法,并对其在不同体相中的分配结果及变化趋势进行了跟踪考察。结果表明,对于水相,检测方法的最小检测量可达10mg/L,在10~3000mg/L范围内具有良好线性关系,相对标准偏差<5%;对于油相,可结合梯度溶剂萃取的前处理技术,将降粘剂从油相中萃取分离,再进行分析检测,提取效率高于95%。对于原油/降粘剂两相溶液体系,80%以上的降粘剂分布在水相,随着温度的升高,油相中的含量有增高趋势。对于原油/降粘剂三相溶液体系,油相中几乎不含有降粘剂,约75%的降粘剂分布在乳液相中;随着温度的升高,乳液相中的含量有所降低而水相中的含量有所增大;盐水条件下,水相中的含量稍高于纯水条件,不同盐水之间降粘剂的含量分布结果类似。
英文摘要:
      The concentration detection method and results of a viscosity reducer play important roles on its structure design and usage method. To realize the concentration analysis of a novel viscosity reducer used in shengli oilfield, a high-performance liquid chromatography method with a hydrophobic column was established for water and oil phase samples, and the distribution regulations of concentration in different phases were investigated. The results showed the lowest limit of detection for water phase sample was 10 mg/L, the broad linear range was 10-3000 mg/L and relative standard deviation was less than 5%. Combined with gradient solvent extraction technique, the viscosity reducer existing in the oil phase can be efficiently extracted and separated from oil samples, and then can be analyzed adopting above established analytical method. The extraction efficiency was over 95%. As for crude oil/viscosity reducer binary system, over 80% viscosity reducer distributed in water phase, and the content in oil phase slighted increased with the increase of temperature. As for crude oil/viscosity reducer ternary system, there was nearly no viscosity reducer in oil phase, about 75% of viscosity reducer distributed in emulsion phase and the minority was in water phase. With the increase of temperature, the content in water phase increased. Under the condition of salt solution, the content in water phase was little more than that with pure water solution, however, the content was almost similar to each other under the conditions of various concentration salt solution.
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