SYSTEMS AND METHODS FOR RE-COMPLETING MULTI-ZONE WELLS

摘要

The well includes a wellbore with a casing string that extends within the wellbore, defining a casing conduit including existing perforations. A re-completion liner extends within the casing conduit and defines a liner conduit therein, and an annular space extends between the re-completion liner and the casing string. Systems and methods include perforating the re-completion liner to create liner perforations and perforating the casing string to create re-completion perforations that are generally aligned with respective liner perforations, stimulating the subterranean formation by flowing a completing fluid through the plurality of liner perforations and re-completion perforations, controlling flow of a fluid within the annular space, and/or producing a reservoir fluid from the subterranean formation and through both the existing perforations and the re-completion perforations.

主权项

1. A method of re-stimulating a re-lined well, the method comprising:
delivering a completion fluid to a liner conduit, which is defined by a re-completion liner that extends within a casing conduit, at a supply flow rate to generate a positive pressure within the liner conduit, wherein the casing conduit is defined by a casing string that includes a plurality of existing perforations and extends within a subterranean formation, and further wherein the re-completion liner and the casing string define an annular space therebetween; perforating the re-completion liner and the casing string to create a plurality of liner perforations and a plurality of re-completion perforations that are generally aligned with respective liner perforations of the plurality of liner perforations; and stimulating the subterranean formation by flowing the completion fluid from the liner conduit, through the plurality of liner perforations, through the annular space, through the respective re-completion perforations, and into the subterranean formation at a completion flow rate that is greater than the supply flow rate, wherein the delivering is performed prior to the perforating, and further wherein the flowing is directly responsive to the perforating.