Performance of chemical additives has been evaluated from thermal stability, viscosity reducing, oil fraction analysis and physics simulation test.

从热稳定性、降粘性能、原油馏分分析、物理模拟试验方面对化学添加剂进行了性能评价。

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Gas oil fraction of shale oil is unstable. To address this problem, the authors of the article propose a new solvent extraction-alkali washing refining process.

针对页岩油粗柴油馏分不稳定问题，提出了一种溶剂萃取-碱洗精制工艺。

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Said catalyst can be used for hydrodesulphurization of light oil fraction or gas containing organic sulphide, in particular, it is applicable to hydrodesulphurization of naphtha and coking dry gas.

该催化剂可用于含有机硫化物的轻油馏分或气体的加氢脱硫，特别适用于石脑油和焦化干气的加氢脱硫。

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Teamed up with Boris Berezovsky to take over oil giant Sibneft at a fraction of its market value.

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The latter's batteries can be charged off the electrical grid (which is almost entirely powered by non-oil fuels) and operate for upwards of twenty miles without using a drop of gasoline, and for a fraction of the cost of oil-based fuels.

CENTERFORSECURITYPOLICY: For your country

In 2012 a court battle in London with fellow "oligarch" Roman Abramovich, his former associate with whom he fell out as Mr Putin came to power, ended in defeat, with his allegations that he was intimidated by Mr Abramovich into selling shares in Russian oil giant Sibneft for a "fraction of their true worth" entirely rejected by the judge.

BBC: Obituary: Boris Berezovsky