Sometimes, the work over operation must be done to large diameter cased bore hole for the need of production of the well.

因生产需要，有时要对大套管井筒进行修井。

youdao

Sometimes, the work over operation must be done to large diameter cased bore hole for the need of production of the well.

因生产需要，有时要对大套管井筒进行修井。

youdao