Boot baskets are an essential tool in proper wellbore cleaning operations(1). They are used to capture debris and cuttings that are too large to circulate from the well. The boot basket works by suddenly reducing the fluid velocity causing the heavy junk to drop into the top of the basket. Boot baskets
should be installed in the drill string immediately above junk mills and casing scrapers. Two or more baskets should be run in tandem whenever a large amount of milling debris is anticipated. For wells with reduced ID liners, a second larger basket may be run to a point above the liner top to capture debris that cannot be circulated out of the larger annular area where fluid velocities are lower.