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1. (WO2019027489) FLUID INJECTION TREATMENTS IN SUBTERRANEAN FORMATIONS STIMULATED USING PROPELLANTS
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What is claimed is:

1. A method comprising:

introducing a propellant into one or more secondary boreholes in a subterranean formation;

igniting the propellant in the secondary boreholes, whereby at least a region of the subterranean formation near the secondary boreholes becomes at least partially ruptured;

introducing a first fracturing fluid into a first production well bore in the subterranean formation in or near the ruptured region of the subterranean formation at or above a pressure sufficient to create or enhance at least a first primary fracture in the subterranean formation that extends into at least a portion of the ruptured region of the subterranean formation; and

introducing a displacement fluid into one or more of the secondary boreholes.

2. The method of claim 1 further comprising allowing the displacement fluid to facilitate movement of a reservoir fluid in the ruptured region of the subterranean formation toward the first production well bore.

3. The method of claim 2 wherein the reservoir fluid comprises a hydrocarbon-bearing fluid.

4. The method of claim 1 wherein ignition of the propellant in the secondary boreholes causes the formation of a complex fracture network comprising one or more secondary or tertiary fractures in the ruptured region of the subterranean formation.

5. The method of claim 4 wherein the first primary fracture is at least partially connected to the complex fracture network.

6. The method of claim 1 wherein:

at least a second production well bore penetrates the subterranean formation in or near the ruptured region of the subterranean formation; and

the method further comprises introducing a second fracturing fluid into the second production well bore at or above a pressure sufficient to create or enhance at least a second primary fracture in the subterranean formation that extends into at least a portion of the ruptured region of the subterranean formation.

7. The method of claim 6 wherein the method further comprises:

after the step of introducing the second fracturing fluid into the second production well bore, introducing a third fracturing fluid into the production well bore in the subterranean formation in or near the ruptured region of the subterranean formation at or above a pressure sufficient to create or enhance at least a third primary fracture in the subterranean formation that extends into at least a portion of the ruptured region of the subterranean formation

8. The method of claim 7 wherein the first, second, and third fracturing fluids are introduced into the first and second production well bore using a first set of one or more pumps.

9. The method of claim 1 wherein at least one hydrocarbon-bearing fluid is produced from the subterranean formation through the first production well bore after the step of introducing the first fracturing fluid and before the step of introducing the displacement fluid into one or more of the secondary boreholes.

10. The method of claim 1 wherein the propellant comprises an electrically controlled propellant.

1 1. The method of claim 1 wherein the displacement fluid comprises an aqueous base fluid and one or more surfactants.

12. A method comprising:

introducing a propellant into one or more secondary boreholes in a subterranean formation;

igniting the propellant in the secondary boreholes, whereby at least a region of the subterranean formation near the secondary borehole becomes at least partially ruptured;

introducing a fracturing fluid into a production well bore in the subterranean formation near the ruptured region of the subterranean formation at or above a pressure sufficient to create or enhance at least one primary fracture in the subterranean formation that extends into at least a portion of the ruptured region of the subterranean formation; and

introducing a displacement fluid into at least one injection well bore in the subterranean formation near the ruptured region of the subterranean formation, wherein the injection well further comprises one or more fractures penetrating the ruptured region of the subterranean formation.

13. The method of claim 12 further comprising allowing the displacement fluid to facilitate movement of a fluid in the ruptured region of the subterranean formation toward the production well bore.

14. The method of claim 12 wherein ignition of the propellant in the secondary boreholes causes the formation of a complex fracture network comprising one or more secondary or tertiary fractures in the ruptured region of the subterranean formation.

15. The method of claim 12 wherein at least one hydrocarbon-bearing fluid is produced from the subterranean formation through the production well bore after the step of introducing the fracturing fluid into the production well bore and before the step of introducing the displacement fluid into at least one injection well bore.

16. The method of claim 12 wherein the propellant comprises an electrically controlled propellant.

17. A method comprising:

drilling a plurality of secondary boreholes in the subterranean formation;

introducing a propellant into each of the plurality of secondary boreholes;

igniting the propellant in the secondary boreholes, whereby at least a region of the subterranean formation near at least one of the secondary boreholes becomes at least partially ruptured;

drilling a production well bore to penetrate the subterranean formation in or near the ruptured region of the subterranean formation;

introducing a fracturing fluid into a production well bore at or above a pressure sufficient to create or enhance at least one primary fracture in the subterranean formation that extends into at least a portion of the ruptured region of the subterranean formation;

producing at least a first hydrocarbon-bearing fluid from the subterranean formation through the production well bore; and

after producing the first hydrocarbon-bearing fluid from the subterranean formation: drilling an injection well bore to penetrate the subterranean formation near a side of the ruptured region of the subterranean formation opposite the production well bore, introducing a fracturing fluid into the injection well bore at or above a pressure sufficient to create or enhance at least one fracture in the subterranean formation that extends into at least a portion of the ruptured region of the subterranean formation,

introducing a displacement fluid into the injection well bore, and producing at least a second hydrocarbon-bearing fluid from the subterranean formation through the production well bore.

18. The method of claim 17 wherein the first and second hydrocarbon-bearing fluids have substantially the same composition.

19. The method of claim 17 further comprising allowing the displacement fluid to facilitate movement of the second hydrocarbon-bearing fluid from the ruptured region of the subten-anean formation toward the production well bore.

20. The method of claim 17 wherein the propellant comprises an electrically controlled propellant.