该设备主要用于对油田边缘井、低产井及废井的采油作业。

This apparatus is mainly used in oil extracting operation of margin well, stripper well and abandon well of oil field.

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沿构造翼部下倾部位或在产层外边界上所钻的井。边缘井经常穿透油水界面。

A well drilled down the flanks of structure or on the outer limits of a producing formation. An edge well often penetrates the oil-water contact.

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但是狐狸立刻跳在了山羊的背上然后抓住了井的边缘，“再见我的朋友，”狐狸说记住不要相信有困难的人的建议。

But the fox immediately jumped on the goat's back and up to the edge of the well. "Good-bye, friend," said the fox. "Remember next time don't trust the advice of a man in difficulties."

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