Selectively degradable passage restriction and method

摘要

An actuation system and method includes a tubular defining a passage, and an assembly disposed with the tubular. The assembly includes a restriction operatively arranged to receive a restrictor for enabling actuation of the assembly. The restriction includes a degradable material with a protective layer thereon, the degradable material degrading upon exposure to a fluid in the passage and the protective layer isolating the degradable material from the fluid.

主权项

1. An actuation system comprising:
a tubular defining a passage; and an assembly disposed with the tubular, the assembly including a restriction operatively arranged to receive a restrictor for enabling actuation of the assembly, the restriction including a degradable material with a protective layer thereon, the degradable material degrading upon exposure to a fluid in the passage and the protective layer isolating the degradable material from the fluid, the degradable material including an uncovered area with respect to the protective layer; wherein the restrictor blocks fluid flow through the passage, the assembly is actuated by creating a pressure differential across the restrictor, and actuation of the assembly establishes fluid communication between the uncovered area and the passage.