第二部分是研究由于沥青质和胶质在石英砂上的吸附，石英砂润湿性发生改变后的润湿性测定。
The second is about wettability measurement of quartz sands due to adsorption of asphaltene and resin.
由于粘土运移及蜡和胶质沥青质垢的生成，近年来油井产量逐年下降。
Oil production in recent years decreases due to clay migration and the formation of wax and gel asphalt scales.
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。
Not mainly the ageing of resins and asphaltenes but that of saturates and aromatics cause the ageing of asphalt.
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