The presence of nitrogen inhibits the increase of asphaltenes in slurry oil.
封氮储存可明显抑制沥青质的增长。
The VPO average molecular weight of vacuum residues and asphaltenes all decreased.
减压渣油和正庚烷沥青质的VPO平均相对分子质量都减小了。
Data show that the compositions and structures of the two asphaltenes are different.
分析结果说明，这两种沥青的沥青质在组成和结构上有明显差异。
The stability of asphaltenes in crude oil is mainly dependent on the asphaltenes solubility of crude oil.
沥青质在原油中的稳定性主要取决于原油对沥青质的溶解能力。
Not mainly the ageing of resins and asphaltenes but that of saturates and aromatics cause the ageing of asphalt.
沥青热氧老化的原因主要是饱和分和芳香分的氧化，而不是胶质和沥青质的氧化。
Generally, polar compounds or asphaltenes deposited from the crude oil onto mineral surfaces cause the oil-wet condition.
一般地，极性化合物和沥青烯从原油中沉淀下来附着在岩石表面，从而产生油湿性条件。
To understand better the complex chemical structure of asphaltenes, information obtained by various analytical methods should be combined.
综合分析用各种方法得到的信息才能更好地认识沥青质这类复杂有机大分子的化学结构。
The content of resin were aromatic are both decreased significantly. At the the same time, the content of asphaltenes and saturated hydrocarbon were increased.
稠油中胶质和芳香烃含量显著下降，沥青质和饱和烃含量提高；
The additive composition allows fuels which are prone to separation, for example blended fuels or fuels having a high content of asphaltenes, to be used successfully.
所述添加剂组合物允许成功地使用易于分离的燃料，例如共混燃料或具有高沥青质含量的燃料。
The aromatic structure of pentane asphaltenes is mainly peri condensed, while for resins the proportion of cata condensed and peri condensed aromatic structures is comparable.
戊烷沥青质中以迫位缩合的芳香环系结构为主，胶质组分中渺位缩合与迫位缩合的芳香环系结构各占相当比例。
The results showed that the aromatic ratio, heteroatom and metal contents contribute to the high polarity of the asphaltenes. This is the basis of other properties of heavy oil.
结果表明，沥青质的高极性是由其高芳烃含量、高杂原子和金属含量引起的，这是研究稠油其它性质的基础。
The main components of oil are saturated hydrocarbons, aromatic compounds, asphaltenes, resins, and so on. It is difficult to degrade these substances which are bad for aquatic life.
由于石油的主要成分包括饱和烃、芳香烃类化合物、沥青质、树脂类等，这些物质难以降解，并且对水生生物有毒杀作用。
The adsorption of asphaltenes on the surfaces of reservoir rocks and the wettability alteration caused by adsorption are studied experimentally using two asphaltene samples prepared from crude oils.
选用两种原油沥青质样品，对沥青质在岩石孔隙表面的吸附及吸附所引起的润湿性变化进行了实验研究。
The adsorption of asphaltenes on the surfaces of reservoir rocks and the wettability alteration caused by adsorption are studied experimentally using two asphaltene samples prepared from crude oils.
选用两种原油沥青质样品，对沥青质在岩石孔隙表面的吸附及吸附所引起的润湿性变化进行了实验研究。
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