Patent ID: 6446722
Filing Date: 2002-09-10
Classification: E21B

Abstract:
A method of completing an unconsolidated subterranean zone penetrated by a wellbore having an upper end and a lower end comprising:placing in the lower end of the wellbore in the zone a liner having slots therein whereby a first annulus is formed between the liner and the wellbore; placing in the lower end of the well bore in the zone a screen within the liner whereby a second annulus is formed between the screen and the liner; packing the first annulus with particulate material deposited out of a slurry containing the particulate material flowed into the first annulus; bypassing a sand bridge formed in the first annulus, wherein one side of the sand bridge blocks at least a portion of the flow in the first annulus, by using the second annulus as an alternate path for the slurry whereby flow from the alternate path enters the first annulus on the other side of the blocking sand bridge by way of at least one of the slots in the liner.