用捞砂绳下入油井的油管中以刮去油管壁上的结蜡所用的装置。

A device used on a sand line in the tubing of an oil well to scrape the wax off the tubing.

youdao

用捞砂绳下入油井的油管中以刮去油管壁上的结蜡所用的装置。

A device used on a sand line in the tubing of an oil well to scrape the wax off the tubing.

youdao