US Patent 10364656 Annular flow rings for sand control screen assemblies

A sand control screen assembly includes a base pipe and a sand screen positioned about an outer surface of the base pipe. An annular flow ring is positioned about the outer surface of the base pipe and is operatively coupled to the sand screen. The annular flow ring includes a cylindrical outer sleeve, a cylindrical inner sleeve received within and coupled to the outer sleeve, and a plurality of radial projections extending radially inward from the inner sleeve to radially support the annular flow ring against the outer surface of the base pipe. A flow annulus is defined between the outer surface of the base pipe and the annular flow ring and the sand screen, and the plurality of radial projections extends into the flow annulus.