To remove wellbore-fill material such as sand, scale or organic materials, and other debris from the wellbore. Many reservoirs produce some sand or fines that may not be carried to surface in the prod [..]

Pipe or joint created at the end of drain line for the purpose of flushing the main line free of debris.

A card that would almost certainly make your hand best. If you are drawing at a straight, but there is a flush draw possible, then the cards that make your straight but also the flush are not clean ou [..]

An opening providing access to a drain line. Closed with a threaded plug.

A hole in a reservoir or tank that is normally covered with a plate that may be removed to allow cleaning of the interior of the reservoir or tank.

The clean out occurs when players drive the opposition players away from the ball at the contest after the tackle is completed.

kleen out The removal of sand, scale, and other deposits from the producing section of the well to restore or increase production.