The mower has a washing hole. Attach a garden hose to this opening and let water run to wash the blade and to wash grass of the mower body.

Set up a slant water hole at reamer, and connect the reamer and pilot with reducing synergy flute, which strengthen the cooling and washing function and ensure the bit's effects.

Better reverse washing of the fracturing string and reliable sealing property offer a set of effective completion techniques for slant hole well production.