Patent ID: 8960282
Filing Date: 2015-02-24
Classification: E21B

Abstract:
1. A debris removal device for subterranean use operable to remove debris before production resumes using pumped fluid flow through a line that positions the debris removal device adjacent the debris for removal of debris with pumped flow into the debris removal device, comprising: an outermost housing supported on a line for placement against the debris to be removed and delivery of pumped fluid to said housing, said housing further having an open ended annularly shaped inlet for placement in the debris to induce said debris to flow into said housing, said inlet located at a free end of said outermost housing so that said free end can be landed on the debris during operation and said housing further comprising an outlet; an eductor to draw debris laden fluid into said inlet; a debris collection chamber in said housing; a fluid passage from said inlet to said outlet that reverses direction at least once between said inlet and said outlet while being open at a location between said inlet and outlet for debris to collect in said debris collection chamber; said passage is defined by an open ended annular path between said debris collection chamber and said housing that begins at said inlet to direct debris laden flow in an opposite direction than removed debris that falls into said debris collection chamber.