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烷基酚的油水分配系数影响因素研究

孙砚泽 彭晓波 文志刚 何文祥 严刚 刘栩 钟鸣 田伟超

孙砚泽, 彭晓波, 文志刚, 等, 2022. 烷基酚的油水分配系数影响因素研究. 地质力学学报, 28 (2): 217-225. DOI: 10.12090/j.issn.1006-6616.2021176
引用本文: 孙砚泽, 彭晓波, 文志刚, 等, 2022. 烷基酚的油水分配系数影响因素研究. 地质力学学报, 28 (2): 217-225. DOI: 10.12090/j.issn.1006-6616.2021176
SUN Yanze, PENG Xiaobo, WEN Zhigang, et al., 2022. Study on influencing factors of oil-water partition coefficient of phenolic compounds. Journal of Geomechanics, 28 (2): 217-225. DOI: 10.12090/j.issn.1006-6616.2021176
Citation: SUN Yanze, PENG Xiaobo, WEN Zhigang, et al., 2022. Study on influencing factors of oil-water partition coefficient of phenolic compounds. Journal of Geomechanics, 28 (2): 217-225. DOI: 10.12090/j.issn.1006-6616.2021176

烷基酚的油水分配系数影响因素研究

doi: 10.12090/j.issn.1006-6616.2021176
基金项目: 

国家自然科学基金 41872144

中国石油科技创新基金 2020D-5007-0101

详细信息
    作者简介:

    孙砚泽(1993—),男,在读博士,主要从事油气地球化学研究。E-mail: 632885418@qq.com

    通讯作者:

    彭晓波(1976—),男,副教授,主要从事石油地质与勘探研究、教学工作。E-mail: pxbcn@126.com

  • 中图分类号: TE19;P618.13

Study on influencing factors of oil-water partition coefficient of phenolic compounds

Funds: 

the National Natural Science Foundation of China 41872144

the CNPC Innovation Foundation 2020D-5007-0101

  • 摘要: 烷基酚是一类由酚类化合物烷基化后产生的化合物,与其他非烃化合物相比,更易溶于水。文章通过不同温度(25 ℃、45 ℃和65 ℃)、不同盐水浓度(4000 mg/L、6000 mg/L和8000 mg/L)和不同原油类型(X37、X45和X61)的三组油水分配实验,研究了烷基酚在油水两相间的分配特征,确定了烷基酚分配系数的变化规律。研究结果表明:随着同系物烷基分子量的增加,油水分配系数也随之增加;烷基酚的油水分配系数随着温度的增加而减小,同系物烷基分子量大的对温度更加敏感;烷基酚在油水体系中的分配系数随着水相盐度的增加而升高。从实验结果来看,温度和水相的盐度均会造成烷基酚油水分配系数差异,且温度的影响要大于盐度。烷基酚在油水两相间的分配行为可以为原油的二次运移和油藏开发的水驱前缘方向判断提供更多依据。

     

  • 图  1  辽东湾坳陷绥中36-1油田位置及地层信息图

    Figure  1.  Location and stratigraphic information of the Suizhong 36-1 Oilfield in the Liaodong Bay depression

    图  2  绥中36-1油田X37、X45和X61原油质量色谱图

    Figure  2.  Mass chromatograms of X37, X45 and X61 crude oil from the Suizhong 36-1 Oilfield

    图  3  酚类化合物硅烷化的反应机理(张渠等, 2009)

    Figure  3.  Reaction formula of alkylphenol and BSTFA (Zhang et al., 2009)

    图  4  X37原油烷基酚质量色谱图(峰号见表 1)

    Figure  4.  Mass chromatogram of phenolic compounds after silanization (peak number is shown in Table 1)

    图  5  X37原油在不同温度下的烷基酚油水分配系数大小(水的盐度为4000 mg/L)

    Figure  5.  Oil-water partition coefficients of alkylphenols under different temperatures (The water salinity is 4000 mg/L)

    图  6  X37原油在不同盐水浓度下的烷基酚油水分配系数大小(温度为65 ℃)

    Figure  6.  Oil-water partition coefficients of alkylphenols under different salinities (The temperature is 65 ℃)

    图  7  不同非烃含量的原油与水混合平衡后烷基酚的油水分配系数大小(温度为65 ℃,水的盐度为4000 mg/L)

    Figure  7.  Oil-water partition coefficients of alkylphenols from crude oil with different contents of non-hydrocarbon (The temperature is 65 ℃, and the water salinity is 4000 mg/L)

    表  1  20种酚类化合物的峰号、分子式、分子量与中英文名称及简写

    Table  1.   Information table of 20 phenolic compounds (peak number, molecular formula, molecular weight, Chinese and English names and abbreviations)

    峰号 分子式 分子量 中文名称 英文名称及简写
    1 C6H6O 94 苯酚 Phenol(Ph)
    2 C7H20O 108 2-甲基酚 2-Methylphenol/2-Cresol(2-MPh)
    3 C7H20O 108 3-甲基酚 3-Methylphenol(3-MPh)
    4 C7H20O 108 4-甲基酚 4-Methylphenol(4-MPh)
    5 C8H34O 122 2-乙基酚 2-Ethylphenol(2-EPh)
    6 C8H34O 122 2, 5-二甲基酚 2, 5-Dimethylpheno(2, 5-DMPh)
    7 C8H34O 122 2, 4-二甲基酚 2, 4-Dimethylphenol(2, 4-DMPh)
    8 C8H34O 122 3, 5-二甲基酚 3, 5-Dimethylphenol(3, 5-DMPh)
    9 C8H34O 122 2, 6-二甲基酚 2, 6-Dimethylphenol(2, 6-DMPh)
    10 C8H34O 122 4-乙基酚 4-Ethylphenol(4-EPh)
    11 C9H48O 136 2-异丙基酚 2-Isopropylphenol(2-IPPh)
    12 C8H34O 122 2, 3-二甲基酚 2, 3-Dimethylphenol(2, 3-DMPh)
    13 C8H34O 122 3, 4-二甲基酚 3, 4-Dimethylphenol(3, 4-DMPh)
    14 C9H48O 136 2-丙基酚 2-Propylphenol(2-PPh)
    15 C9H48O 136 3-异丙基酚 3-Isopropylphenol(3-IPPh)
    16 C9H48O 136 4-异丙基酚 4-Isopropylphenol(4-IPPh)
    17+18 C9H48O 136 2, 4, 6-三甲基酚+
    2, 3, 5-三甲基酚
    2, 4, 6-Trimethylphenol(2, 4, 6-TMPh)+
    2, 3, 5-Trimethylphenol(2, 3, 5-TMPh)
    19 C9H48O 136 2, 3, 6-三甲基酚 2, 3, 6-Trimethylphenol(2, 3, 6-TMPh)
    20 C9H48O 136 3, 4, 5-三甲基酚 3, 4, 5-Trimethylphenol(3, 4, 5-TMPh)
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