Patent ID: 8807215
Filing Date: 2014-08-19
Classification: E21B

Abstract:
1. A method of treating a subterranean well having a wellbore extending through a formation having a plurality of production zones, the method comprising the steps of: 1) running into the wellbore a work string having an interior passageway for flowing fluid within the work string, the work string having a plurality of longitudinally-spaced screen assemblies positioned thereon; 2) positioning a first screen assembly adjacent a corresponding first target zone of the formation; 3) isolating a plurality of target zones; 4) closing a first work string valve positioned in the interior passageway of the work string, and blocking fluid flow through the interior passageway; 5) flowing fluid from the interior passageway through a first injection valve and into the corresponding first target zone; 6) closing the first injection valve by increasing a fluid pressure differential across the first injection valve, and thereby blocking fluid flow from the interior passageway into the formation; 7) opening the first work string valve and allowing fluid flow along the interior passageway; 8) repeating steps 4) through 7) above but with respect to a second work string valve, a second screen assembly and corresponding second target zone, and a second injection valve.