Patent ID: 11879299
Assignee: G&H DIVERSIFIED MANUFACTURING LP
Field: Civil engineering (Other fields)
Classification: CPC E | IPC E

Claim 10:
11. A well system, comprising:
a casing string positioned in a wellbore extending through a subterranean, earthen formation;
a dissolvable barrier assembly positioned in a central passage of the casing string, wherein the dissolvable barrier assembly comprises:
a holder configured to couple to the casing string and comprising a central aperture; and
a barrier receivable in the central aperture of the holder and configured to prevent the communication of fluid between an uphole chamber within the casing string extending from the dissolvable barrier assembly towards a surface of the wellbore and containing an uphole fluid, and a downhole chamber within the casing string extending from the dissolvable barrier assembly towards a terminal end of the casing string, wherein the barrier comprises an outer surface including an uphole surface defining an uphole end and a downhole surface defining a downhole end opposite the uphole end, wherein at least a portion of the uphole surface is configured to corrode when in contact with the uphole fluid at a first corrosion rate and at least a portion of the downhole surface is configured to corrode when in contact with the uphole fluid at a second corrosion rate that is greater than the first corrosion rate;
wherein the holder comprises an exterior having a first portion and a second portion each exposed to fluids in the casing string with the barrier coupled to the holder, wherein the second portion is configured to corrode at a greater rate than the first portion when the holder is in contact with the uphole fluid.