Patent ID: 8371370

Claim:
A completion assembly for subterranean use from a surface in multiple zones that are gravel packed together, comprising: a plurality of screens spaced apart with tubulars that define a gravel packed annulus around them in the subterranean location, said annulus spanning multiple zones and said annulus is isolated from the surface by at least one packer; at least one barrier forming chemical delivered from said tubulars into said gravel packed annulus, said barrier forming chemical forming a barrier with the gravel in said annulus between at least two zones; said barrier forming chemical disposed in a chamber having at least one rupturable barrier on at least one outlet of said chamber, said chamber isolated from pressure in said annulus with said rupturable barrier in place; wherein pressure in said chamber is initially increased from a predetermined value during run in on reduction of the volume of said chamber to remove said rupturable barrier when said screens are located adjacent said multiple zones.