Patent ID: 9074466
Filing Date: 2015-07-07
Classification: E21B

Abstract:
1. A well production and injection string for use in a wellbore, the string comprising: a plurality of spaced apart packers each adapted to seal with a wall of the wellbore; and a plurality of flow control devices distributed between pairs of adjacent packers, the plurality of flow control devices adapted to communicate flow between an interior and an exterior of the string with less restriction to flow from the interior to the exterior of the string than to flow from the exterior to the interior of the string, and wherein the wellbore extends from a terranean surface into a target subterranean zone and the portion of the string in the target subterranean zone defines a production/injection interval, wherein the packers are distributed along substantially the entire production/injection interval, wherein the flow control devices are less restricting to flow between the exterior and interior of the string toward an end of the string, and wherein the restriction to flow of the flow control devices comprises fluid diode based valves that account for different fluid material properties of injection fluids and production fluids.