Patent ID: 9739115
Date: 2017-08-22
CPC Classifications: E21B

Claim:
1. A tubular apparatus configured for connection to a tubular string extending to a subterranean location, said tubular string comprising a wall defining an outer surface and an innermost passage extending the length of the tubular string therethrough and defined on an opposite side of said wall from the outer surface, comprising: at least one elongated tubular body having opposed ends for mounting to the tubular string in at least one location making said body a continuation of the innermost passage of the tubular string, said body comprising at least one cover over at least one wall opening, said cover comprising an elongated tubular shape located within said innermost passage or in the wall of said body, said cover further comprises a degradable material, to block flow in opposed directions so that pressure can be conducted between said opposed ends; said degradable material selectively opening said at least one wall opening while having remained in a fixed position relative to the tubular string for fluid flow through said wall opening.