System and method for providing miscible displacement in a hydraulically-stimulated reservoir

1 . A downhole tool for use in a wellbore, the downhole tool comprising:

a body defining (1) a first flowpath configured to allow a first fluid from a production zone in the wellbore to flow in a first direction through the body and (2) a plurality of second flowpaths configured to allow a second fluid to flow in a second, opposing direction and be injected into an injection zone in the wellbore simultaneously with the first fluid flowing through the first flowpath, wherein the body comprises:

a triple-connect device configured to be connected to a work string, wherein the first flowpath is positioned radially-inward from the second flowpaths in the triple-connect device, wherein the first flowpath is not in fluid communication with the second flowpaths in the triple-connect device, and wherein the second flowpaths are circumferentially-offset from one another around the first flowpath in the triple-connect device;

a production sub positioned downstream from the triple-connect device, wherein the production sub has one or more radial slots in communication with the first flowpath to allow the first fluid to flow from the production zone in the wellbore into the first flowpath in the production sub, wherein the one or more radial slots in the production sub are perpendicular to and extend between the second flowpaths in the production sub, and wherein the one or more radial slots are not in fluid communication with the second flowpaths in the production sub; and

an injection sub positioned downstream from the triple-connect device and upstream or downstream from the production sub, wherein the injection sub includes a perforated pipe, a screen, or a mesh positioned around the second flowpaths, and wherein the injection sub has one or more radial slots in communication with the second flowpaths to allow the second fluid to be injected from the second flowpaths into the injection zone in the wellbore.

2 . The downhole tool of claim 1 , wherein the body includes a packer section that is configured to isolate the production zone from the injection zone.

3 . The downhole tool of claim 1 , wherein the second flowpath includes a control line disposed on an outside surface of the body.

4 . The downhole tool of claim 1 , wherein the first and second flowpaths are switchable, which results in the second fluid flowing through the first flowpath and the first fluid flowing through the second flowpath.

5 . A method of using a downhole tool in a wellbore, the method comprising:

running the downhole tool into the wellbore, wherein the downhole tool comprises a body defining a first fluid flowpath and a plurality of second fluid flowpaths;

producing a first fluid from a production zone in the wellbore via the first flowpath, wherein the first fluid flows in a first direction; and

injecting a second fluid into an injection zone of the wellbore via the second flowpath simultaneously with producing the first fluid via the first flowpath, wherein the second fluid flows in a second, opposing direction;

wherein the body comprises:

a triple-connect device configured to be connected to a work string, wherein the first flowpath is positioned radially-inward from the second flowpaths in the triple-connect device, wherein the first flowpath is not in fluid communication with the second flowpaths in the triple-connect device, and wherein the second flowpaths are circumferentially-offset from one another around the first flowpath in the triple-connect device;

a production sub positioned downstream from the triple-connect device, wherein the production sub has one or more radial slots in communication with the first flowpath to allow the first fluid to flow from the production zone in the wellbore into the first flowpath in the production sub, wherein the one or more radial slots in the production sub are perpendicular to and extend between the second flowpaths in the production sub, and wherein the one or more radial slots are not in fluid communication with the second flowpaths in the production sub; and

an injection sub positioned downstream from the triple-connect device and upstream or downstream from the production sub, wherein the injection sub includes a perforated pipe, a screen, or a mesh positioned around the second flowpaths, and wherein the injection sub has one or more radial slots in communication with the second flowpaths to allow the second fluid to be injected from the second flowpaths into the injection zone in the wellbore.

6 . The method of claim 5 , further comprising isolating the production zone from the injection zone.

7 . A downhole tool for use in a wellbore, the downhole tool comprising:

a triple-connect device having a first flowpath and a plurality of second flowpaths, wherein the first flowpath is positioned radially-inward from the second flowpaths, wherein the first flowpath is not in fluid communication with the second flowpaths, and wherein the second flowpaths are circumferentially-offset from one another around the first flowpath;

a production sub connected to the triple-connect device, the first flowpath and the second flowpaths extending through the production sub, the production sub having one or more radial slots in communication with the first flowpath to allow a first fluid to flow from a production zone in the wellbore into the first flowpath, wherein the one or more radial slots in the production sub are perpendicular to and extend between the second flowpaths, and wherein the one or more radial slots are not in fluid communication with the second flowpaths;

an injection sub connected to the triple-connect device, the first flowpath and the second flowpaths extending through the injection sub, the injection sub including a perforated pipe, a screen, or a mesh positioned around the second flowpaths, the injection sub having one or more radial slots in communication with the second flowpaths to allow a second fluid to be injected from the second flowpaths into an injection zone in the wellbore, and wherein the second fluid flows through the second flowpaths simultaneously with the first fluid flowing through the first flowpath;

a work string connected to and positioned between the triple-connect device and the production sub and/or between the production sub and the injection sub, wherein the work string comprises an inner portion and an outer portion that are concentric with one another, wherein the first flowpath extends through the inner portion, and wherein the second flowpath is defined between the inner and outer portions; and

a packer positioned between the production sub and the injection sub, wherein the packer is positioned around the outer portion of the work string.

8 . The downhole tool of claim 7 , wherein the first fluid and the second fluid flow in opposite directions.