本文综述了国外添加化学剂注蒸汽采油的主要技术。

This article reviews the chief techniques of EOR by steam injection with ancillary additives.

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根据这些表达式进一步推导套管轴向力和径向力的计算公式，然后根据这些公式定性地分析注蒸汽采油对套管强度的影响。

By means of these expressions, formulas for calculating the axial and radial forces on the casing are derived and then the influence of steam flooding on casing strength is qualitatively analyzed.

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加州的一家小公司- - -玻璃点太阳能公司认为，通过使用阳光来加热，它能为采油生产更清洁和更便宜的蒸汽。

GlassPoint, a small Californian company, thinks it can make steam for oil recovery more cleanly and cheaply by using sunshine to do the heating.

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