Patent ID: 8662159

Claim:
A completion assembly for use in a subterranean location having multiple producing zones that are gravel packed together, comprising: a plurality of open screens spaced apart with blank tubulars that define a gravel packed annulus around them in the subterranean location, said annulus spanning multiple producing zones and said annulus is isolated from the surface by at least one packer; said blank tubulars comprise at least one opening located between said zones, said opening initially closed by a temporary closure; a straddle tool selectively insertable from the surface into said completion assembly, said straddle tool positioned between said screens and isolating said at least one opening, said straddle tool delivering a barrier forming chemical into said gravel packed annulus through said opening, thereby opening said temporary closure by pressure of said delivery; said barrier forming chemical forming a barrier with said gravel in said gravel packed annulus between at least two zones, said screens remaining open after delivery of said barrier forming chemical.