Effect of Anion Non⁃Ion Complex System on Emulsification Property of Heavy Oil

doi:10.12422/j.issn.1672-6952.2024.06.003

Abstract

Abstract:

The effects of a single emulsifier octylphenol ethoxylate 10 (OP?10) and its compounding system on emulsion stability, rheology and the effect of organic bases on the interfacial tension were investigated. The results show that the optimal binary composition is as follows: The mass fraction of OP?10 is 1% and the mass fraction of sodium oleate (YSN) is 0.6%.The optimum compounding method can produce stable emulsion with thick oil, and the viscosity can be reduced from 1 168.22 mPa?s to 57.57 mPa?s, with the viscosity reduction rate of 91.03% and the water separation rate of 21.33%. The organobase triethanolamine (TEOA) can reduce the interfacial tension of the compounded system to the 10^-2 mN/m level.

Key words: Compound, Surfactant, Organic base, Stability, Interfacial tension

摘要：

研究了单一乳化剂辛基酚聚氧乙烯醚10（OP?10）及其复配体系对辽河油田稠油稳定性、流变性的影响，并研究了有机碱对复配体系界面张力的影响。结果表明，二元最佳复配方式为质量分数为1.0%的OP?10+质量分数为0.6%的油酸钠（YSN）；在最佳复配方式下，复配体系可使稠油形成稳定的乳状液，黏度从1 168.22 mPa·s降至57.57 mPa·s,降黏率为91.03%，分水率为21.33%；有机碱三乙醇胺（TEOA）可使复配体系界面张力降低至10^-2 mN/m。

关键词: 复配, 表面活性剂, 有机碱, 稳定性, 界面张力

CLC Number:

TE39

Dong ZHANG, Guiyang MA. Effect of Anion Non⁃Ion Complex System on Emulsification Property of Heavy Oil[J]. Journal of Liaoning Petrochemical University, 2024, 44(6): 17-22.

张冬, 马贵阳. 阴离子⁃非离子复配体系对稠油乳化性质的影响[J]. 辽宁石油化工大学学报, 2024, 44(6): 17-22.

Figures/Tables 8

Table 1 Parameters of heavy oil in a block of Liaohe Oilfield

ρ₂₀/(g $⋅$ cm^-3)	API度	凝点/℃	w（蜡）/％	w（胶质）/％	w（沥青质）/％	$μ$ ₄₀/（mPa·s）
0.927	21.2	10	7.48	41.90	6.77	1 168.22

Table 1 Parameters of heavy oil in a block of Liaohe Oilfield

ρ₂₀/(g $⋅$ cm^-3)	API度	凝点/℃	w（蜡）/％	w（胶质）/％	w（沥青质）/％	$μ$ ₄₀/（mPa·s）
0.927	21.2	10	7.48	41.90	6.77	1 168.22

Table 2 Data of viscosity temperature of crude oil

温度/℃	黏度/(mPa·s)
30	3 104.69
35	2 299.53
40	1 168.22
45	794.58
50	569.08
55	419.17
60	319.82
65	249.11

Fig.1 Effect of OP?10 mass fractions on the water separation rate of the emulsion

Fig.2 Effect of OP?10 mass fractions on the viscosity of the emulsion

Fig.3 The effect of anionic mass fraction in the binary system of OP?10 on the viscosity of emulsion

Fig.4 The change curve of water separation rate of emulsion at 1.0% OP?10 and the optimal binary system

Fig.5 Viscosity of emulsions containing 1.0%OP?10 and binary/ternary mixtures

Fig.6 The change curve of interfacial tension of emulsion with 1.0% OP?10 and binary/ternary mixtures

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