Patent ID: 8678079

Claim:
An erosion reduction apparatus for a slurry flow path in a subterranean tool for substantial delivery of solids that are carried by a carrier fluid to an annular space around the subterranean tool, comprising: a stationary body having a passage therein defined by a cylindrical wall surrounding the subterranean tool to define said annular space, said passage receiving a flowing slurry of solids carried by a carrier fluid at an inlet to said annular space and said slurry emerging from said annular space substantially unchanged, as to the solids and the carrier fluid, through an outlet from said annular space; a plurality of stationary projections extending from said body inwardly at least in part into said passage within said body to change the direction of slurry flow away from a direction impinging said wall defining said passage and toward a spiral flow pattern that reduces wear due to a decreased impact force.