Patent ID: 7513303
Filing Date: 2009-04-07
Classification: E21B

Abstract:
1. A wellbore cleanup tool, comprising: a mandrel; a screen mounted to said mandrel defining a first annularly shaped volume in between for trapping debris, said first annularly shaped volume remaining open on an upper end thereof for collection of debris regardless of direction of mandrel movement; a flow diverter movably mounted to said mandrel above said screen for movement away from said screen when said mandrel is moved in a first direction and for movement against said screen when said mandrel is moved in a second direction opposite said first direction; said flow diverter, when moved away from said screen providing a path for debris laden fluid that extends from outside said screen to between said diverter and the top of said screen and continues in a second annularly shaped volume between said diverter and said mandrel, said second annularly shaped volume is aligned and spaced and not isolated from said first annularly shaped volume, said second annularly shaped volume is also not isolated when said flow diverter is against said screen.