sieve for control of sandproduktion with adjustable flow and related procedures for the completion of a subterranean borehole

摘要

An adjustable flow rate screen assembly and associated methods of completing a subterranean well provide variable flow rates through downhole sand control screens without restricting access to the well and without requiring overly restrictive screens to be utilized in gravel packing operations. The screen assembly has a tubular restrictor housing (94) with a flow passage (168) formed thereon, a tubular ported housing (92) having ports (150/152/154/156/158/160) formed radially therethrough and providing fluid communication with the flow passage, and a tubular selector sleeve (94) with an opening (146) formed radially therethrough and permitting fluid communication with a selected one of the ports. The selector can be moved between a first position, in which the opening is not axially aligned with either of the first and second ports; a second position, in which the opening is axially aligned with the first port; and a third position, in which the opening is axially aligned with the second port. IMAGE