What is a relief well, how does it work, and when will it be completed?

减压井是什么？它的工作原理如何？什么时候才能完工？

youdao

BP resumed work on a relief well that will permanently end the risk of further oil escaping, Wells said.

BP恢复了减压井的作业，它能永久的结束未来原油泄漏的危险，威尔斯说。

youdao

The flow will stop only once a relief well is dug; the first of these will not be completed before mid-August and, of course, more than one may be needed.

泄漏只有在减压井开凿成功后才会停止，而第一口减压井不可能在八月中旬之前竣工，当然，或许需要不止一口减压井。

youdao

Eleven workers died. He said BP expects to complete two relief wells in August to stop the leak from a damaged well.

VOA: special.2010.06.19

Workers are drilling two relief wells in an effort to ease pressure on the damaged well.

VOA: special.2010.06.04

The president said Friday work continues on relief wells, which would plug the broken well permanently.

VOA: standard.2010.07.16

Development Driller II, the rig drilling a second relief well as a redundancy measure, is completing preparations for its blowout preventer to be used on the Macondo well, while the Development Driller III -- the rig drilling the relief well expected to intercept the main well -- is standing by until that's done.

CNN: STORY HIGHLIGHTS

The President will meet with those folks and have a chance to update, I think, the region on where we are both from a relief well standpoint -- obviously the weather has -- the weather will likely delay the relief well completion by two to three days, but we anticipate that the work will continue again over the weekend.

WHITEHOUSE: Press Briefing

Even so, the Negri Sembilan government last week ordered a media blackout on the affecte d villages as well as relief centers and hospitals.

CNN: ON DEADLY GROUND