Enhanced geothermal systems and reservoir optimization
Systems and methods for maximizing energy recovery from a subterranean formation are herein disclosed. According to one embodiment, a selected subterranean open-hole interval is isolated and at least one fracture is stimulated in the isolated subterranean open-hole interval.
1. A method comprising:
stimulating at least one fracture within an unisolated subterranean open-hole interval;
isolating a selected subterranean open-hole interval by blocking the fracture with a temporary fracture sealant, wherein the temporary fracture sealant degrades after a predetermined period of time under a geostatic temperature; and
stimulating at least one fracture within the isolated subterranean open-hole interval.
2. The method as recited in claim 1 , wherein stimulating at least one fracture within the isolated open-hole interval comprises pressurizing the isolated open-hole interval with a treatment fluid.
3. The method as recited in claim 2 , wherein stimulating at least one fracture in the isolated subterranean open-hole interval comprises projecting treatment fluid from a high pressure jet nozzle against the isolated subterranean open-hole interval.
4. The method as recited in claim 3 , wherein the treatment fluid comprises a granular material.
5. The method as recited in claim 2 , wherein isolating the selected subterranean open-hole interval comprises at least partially filling at least one fracture in the unisolated subterranean open-hole interval with a high viscosity fluid.
6. The method as recited in claim 2 , further comprising detecting the stimulation of fractures real-time with a micro-seismic monitoring system.
7. The method as recited in claim 2 , further comprising detecting a downhole parameter real-time.
8. The method as recited in claim 7 , wherein the downhole parameter is at least one of pressure of the selected open-hole interval, temperature of the selected open-hole interval, the flow rate of the treatment fluid in the selected open-hole interval, the flow pattern of treatment fluid in the selected open-hole interval, the flow rate of the treatment fluid in a fracture in the selected open-hole interval and the flow pattern of the treatment fluid in a fracture in the selected open-hole interval.
9. The method as recited in claim 1 , wherein isolating the selected subterranean open-hole interval comprises sealing at least one fracture within the unisolated subterranean open-hole interval with the temporary fracture sealant.
10. The method as recited in claim 1 , further comprising removing the temporary fracture sealant.
11. The method as recited in claim 10 , wherein removing the temporary fracture sealant comprises at least one of chemically degrading at least a portion of the temporary fracture sealant, thermally degrading at least a portion of the temporary fracture sealant and dissolving at least a portion of the temporary fracture sealant.
12. The method as recited in claim 1 , wherein isolating the selected subterranean open-hole interval comprises positioning an isolation tool adjacent to the selected subterranean open-hole interval.
13. The method as recited in claim 12 , wherein stimulating at least one fracture within the isolated subterranean open-hole interval comprises injecting a treatment fluid down a tubing string.
14. The method as recited in claim 13 , further comprising stimulating at least one fracture in an unisolated subterranean open-hole interval by injecting the treatment fluid down an annulus between the tubing string and the unisolated subterranean open-hole interval.
15. The method as recited in claim 14 , wherein the isolation tool is a high temperature inflatable open-hole packer.
16. The method as recited in claim 14 , wherein the isolation tool is a high temperature expandable open-hole packer comprising an expandable element and a sealing element.
17. The method as recited in claim 1 , wherein isolating the selected subterranean open-hole interval comprises positioning a scab liner proximate the selected subterranean open-hole interval.
18. The method as recited in claim 17 , wherein stimulating at least one fracture within the isolated subterranean open-hole interval comprises injecting a treatment fluid down a tubing string.
19. The method as recited in claim 18 , further comprising stimulating at least one fracture in an unisolated subterranean open-hole interval by injecting the treatment fluid down an annulus between the tubing string and the unisolated subterranean open-hole interval.