Junk basket with self clean assembly and methods of using same

摘要

A downhole tool for removing debris from fluid flowing through the downhole tool uses a screen member and wiper member, the wiper member having at least one window disposed through the inner and outer wall surfaces of the wiper member. Either the screen member or the wiper member is rotatable such that rotation of the screen member or the wiper member causes debris disposed on the outer wall surface of the screen member to fall-off the screen member. At least one direction port disposed at either the upper end of the screen member or the upper end of the wiper member causes rotation of the screen member or wiper member when fluid flows through the downhole tool.

主权项

1. A downhole tool for capturing debris flowing through the downhole tool, the downhole tool comprising:
a tubular member having an upper end, a lower end, an outer wall surface, an inner wall surface defining a longitudinal bore; a wiper member disposed within the longitudinal bore, the wiper member having a wiper outer wall surface in sliding engagement with the inner wall surface of the tubular member, a wiper inner wall surface defining a wiper bore, and at least one window disposed through the wiper outer wall surface and the wiper inner wall surface in fluid communication with the wiper bore; and a screen member disposed within the wiper bore, the screen member having a screen outer wall surface in sliding engagement with the wiper inner wall surface, a screen inner wall surface defining a screen bore, and at least one aperture disposed through the screen outer wall surface and the screen inner wall surface in fluid communication with the screen bore; said screen and wiper members continuously relatively rotatable in a given single direction.