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Applications of Fractured Continuum Model to Enhanced Geothermal System Heat Extraction Problems
This paper describes the applications of the fractured continuum model to the different enhanced geothermal systems reservoir conditions. The capability of the fractured continuum model to generate fracture characteristics expected in enhanced geothermal systems reservoir environments are demonstrated for single and multiple sets of fractures. Fracture characteristics are defined by fracture strike, dip, spacing, and aperture. This paper demonstrates how the fractured continuum model can be extended to represent continuous fractured features, such as long fractures, and the conditions in which the fracture density varies within the different depth intervals. Simulations of heat transport using different fracture settings were compared with regard to their heat extraction effectiveness. The best heat extraction was obtained in the case when fractures were horizontal. A conventional heat extraction scheme with vertical wells was compared to an alternative scheme with horizontal wells. The heat extraction with the horizontal wells was significantly better than with the vertical wells when the injector was at the bottom.
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| accessLevel | public |
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"fn": "Thomas Lowry",
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| description | This paper describes the applications of the fractured continuum model to the different enhanced geothermal systems reservoir conditions. The capability of the fractured continuum model to generate fracture characteristics expected in enhanced geothermal systems reservoir environments are demonstrated for single and multiple sets of fractures. Fracture characteristics are defined by fracture strike, dip, spacing, and aperture. This paper demonstrates how the fractured continuum model can be extended to represent continuous fractured features, such as long fractures, and the conditions in which the fracture density varies within the different depth intervals. Simulations of heat transport using different fracture settings were compared with regard to their heat extraction effectiveness. The best heat extraction was obtained in the case when fractures were horizontal. A conventional heat extraction scheme with vertical wells was compared to an alternative scheme with horizontal wells. The heat extraction with the horizontal wells was significantly better than with the vertical wells when the injector was at the bottom. |
| distribution |
[
{
"@type": "dcat:Distribution",
"title": "Fractured Continuum Modeling for EGS.pdf",
"format": "pdf",
"accessURL": "https://gdr.openei.org/files/438/Fractured%20Continuum%20Modeling%20for%20EGS.pdf",
"mediaType": "application/pdf",
"description": "Describes fracture continuum approach for modeling heat extraction in an EGS environment using different well configurations."
}
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|
| identifier | https://data.openei.org/submissions/6749 |
| issued | 2014-05-06T06:00:00Z |
| keyword |
[
"EGS",
"fracture",
"fracture characteristics",
"fracture continuum",
"fractured continuum model",
"geothermal",
"heat extraction",
"horizontal wells",
"reservoir environment",
"simulation",
"vertical wells"
]
|
| landingPage | https://gdr.openei.org/submissions/438 |
| license | https://creativecommons.org/licenses/by/4.0/ |
| modified | 2017-06-23T14:21:02Z |
| programCode |
[
"019:006"
]
|
| projectLead | Eric Hass |
| projectNumber | FY14 AOP 1.1.5.5 |
| publisher |
{
"name": "Sandia National Laboratories",
"@type": "org:Organization"
}
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|
| title | Applications of Fractured Continuum Model to Enhanced Geothermal System Heat Extraction Problems |
