The structure compositions of a new type of hydraulic driving pumping oil installation and the working principle of its hydraulic driving system are introduced.

介绍了新型液力抽油装置的组成及液压驱动系统的工作原理，该装置综合了液压有杆抽油装置和水力活塞泵抽油装置两方面的优点。

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The installation of the new cap on Friday July 16th could, in principle, stop any further oil or gas from leaking out of the top of the well.

原则上，7月16日周五，安装上新的井盖会阻止油井顶部的石油或天然气进一步漏出。

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"Offshore unit" means any fixed or floating offshore installation or structure engaged in gas or oil exploration, exploitation or production activities, or loading or unloading of oil.

“近海装置”系指从事气或石油的勘探、开发或生产活动或油的装卸的任何固定或浮动的近海装置。

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In the past week there have been two attacks on oil workers near Angola's only onshore oil installation at Soyo, and one on the fringes of the capital, Luanda.

ECONOMIST: Angola: Battling, in the rain | The

It is estimated that the installation will save 34, 000 barrels of oil over 30 years.

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