Crossover Sub with Erosion Resistant Inserts
AssigneeBaker Hughes Incorporated
InventorsNicholas J. Clem, Martin P. Cornoado, Steve Rosenblatt
Life of this patent
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Abstract
A crossover tool that resists the erosive forces of high velocity slurry streams of gravel in downhole fracturing and gravel packing operations employs hardened inserts that protect the inside face of the housing as well as the openings through the crossover housing wall. The inserts have an extending portion that goes through housing openings preferably to the outer surface of the housing. The inserts also have inboard flanged surfaces that preferably abut or overlap to give preferably full inner wall protection to the housing from the flow of abrasive slurry. The inserts can be secured to each other or to the interior of the housing to hold them firmly in place.
Claims21
A crossover completion tool, comprising:
- a tubular body having a passage and at least one outlet extending through a wall that defines said passage;
- at least one insert with at least one port extending from a trailing portion and through a leading portion thereof, said trailing portion being larger than said body outlet through which said leading portion is inserted such that said trailing portion spans over said body outlet as said leading portion extends into said body outlet;
- said insert is more resistant to erosion than said body to protect at least a portion of said body from slurry delivered into said passage.
Dependencies are inferred from the claim text.