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原油馏分组成 break-up of crude oil
The oil composition in this area is different with the major oil fields in the placanticline: it has a low content of asphaltenes, carbon number distribution curve shifting toward low carbon,and low average relative molecular quality.
而葡北原油组成与长垣主力油田的原油不同: 葡北原油的胶质沥青质含量较低、碳数分布曲线向低碳偏移, 平均相对分子质量偏低。
参考来源 - 大庆葡萄花油田北部复合驱可行性探讨·2,447,543篇论文数据，部分数据来源于NoteExpress
由于各地原油组成成分、含水率差异很大，因此各个油田采用的原油脱水方法也不尽相同。
Different methods of dehydration are utilized considering the component of crude oil in different places, and electric dehydration is one of the most universal methods in nowadays.
由于原油组成的复杂性，加上影响形成乳化原油的因素众多，给原油破乳剂的研究工作带来许多困难。
Since the chemical composition of crude oil is complicated and many other factors affect the emulsion process, it is difficult to choose exact demulsifying agent for exact oil.
石油由原油和天然气组成，它们似乎来源于海洋沉积物中的有机物质。
Petroleum, consisting of crude oil and natural gas, seems to originate from organic matter in marine sediment.
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