轻质原油中石蜡组分对蜡质、沥青质和石蜡抑制剂相互作用的影响

IF 2.5 Q3 CHEMISTRY, PHYSICAL
O. M’barki, J. Clements, Luis Salazar, James Machac, Q. P. Nguyen
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引用次数: 2

摘要

在不存在和存在沥青质的情况下,在轻质西德克萨斯原油中检测了蜡分子量分布对具有不同烷基侧链密度的两种α-烯烃马来酸酐链烷烃抑制剂(PI)功效的影响。交叉偏振显微镜有助于数据的解释。蜡晶体形态的主要差异似乎是由蜡的成分驱动的,次要差异与PI的选择有关。在不存在沥青质的情况下,对于具有较高链密度的PI,蜡组合物对PI性能(即降低油粘度和蜡出现温度)的影响更大,而无论蜡组合物如何,具有较低链密度的通常更有效。这些差异在沥青质的存在下减小,使得具有较高链密度的PI在某种程度上更有效。形态和粘度的趋势表明,与蜡组成相关的空间效应在PI与沥青质的相互作用中减弱。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Impact of Paraffin Composition on the Interactions between Waxes, Asphaltenes, and Paraffin Inhibitors in a Light Crude Oil
The effect of wax molecular weight distribution on the efficacy of two alpha olefin-maleic anhydride paraffin inhibitors (PIs) having different densities of alkyl side-chains were examined in light West Texas crude in the absence and presence of asphaltenes. Interpretation of the data was aided by cross-polarization microscopy. Primary differences in wax crystal morphology appear to be driven by the composition of the wax, with secondary differences being associated with the choice of PI. In the absence of asphaltenes, the effect of wax composition on PI performance (i.e., reducing oil viscosity and wax appearance temperature) is greater for the PI having the higher chain density, with the one having the lower chain density being generally more effective regardless of the wax composition. These differences are diminished in the presence of asphaltenes such that the PI having the higher chain density is somewhat more effective. Trends in both morphology and viscosity suggest a steric effect associated with wax composition that is lessened on interaction of the PIs with asphaltenes.
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来源期刊
Colloids and Interfaces
Colloids and Interfaces CHEMISTRY, PHYSICAL-
CiteScore
3.90
自引率
4.20%
发文量
64
审稿时长
10 weeks
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