wellbore

例句：

1. 1. The wellbore is filled with water and oil.
   这个油井里充满了水和油。
2. 2.The engineer drilled a well to access the underground water.
   工程师钻了一个井来获取地下水。
3. 3.The well was abandoned due to poor quality of the water.
   由于水质不好，这个井被废弃了。