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Infield re-injection straegies in Olkaria, Kenya : based on tracer studies and numerical modelling

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dc.contributor Jarðhitaskóli Háskóla Sameinuðu þjóðanna is
dc.contributor.author Mwawongo, Godwin M. is
dc.date.accessioned 2014-10-29T18:34:13Z
dc.date.available 2014-10-29T18:34:13Z
dc.date.issued 2004
dc.identifier.issn 1670-7427
dc.identifier.uri http://hdl.handle.net/10802/7923
dc.description Myndefni: kort, línurit, töflur is
dc.description.abstract In two-phase geothermal reservoirs, efficient heat mining process can be achieved by injecting deep into the liquid zone at an optimum rate that will maintain the boiling level at the same depth while producing from a shallower level. Optimum resource utilization in Olkaria East production field requires intermittent infield re-injection around the central part of the field followed by a temperature recovery period. Numerical methods can be used to model fluid flowpaths in fractured two-phase reservoirs. Tracer tests can be used to calibrate such models. Reservoir cooling under varied injection scenarios can then be predicted. In this report, a two-dimensional fracture model analysis, resulting from tracer and injection tests conducted in well OW-12, is presented. Wells OW-12 and OW-19 are connected at depth by an 800 m deep by 400 m wide and 1 m thick fracture. Cold and hot re-injection into well OW-12 at 8 kg/s will cool the formation by 55°C and 25°C, respectively, in twenty years. Cold injection can be done for 11/2 years followed by a similar recovery period. is
dc.format.extent 28 s. is
dc.language.iso en
dc.publisher United Nations University is
dc.publisher Orkustofnun is
dc.relation.ispartofseries United Nations University., UNU Geothermal Training Programme, Iceland. Report ; 2004-12
dc.relation.uri http://www.os.is/gogn/unu-gtp-report/UNU-GTP-2004-12.pdf
dc.subject Jarðhiti is
dc.subject Jarðhitarannsóknir is
dc.subject Jarðboranir is
dc.subject Líkön is
dc.subject Jarðhitasvæði is
dc.subject Borholur is
dc.subject Kenía is
dc.title Infield re-injection straegies in Olkaria, Kenya : based on tracer studies and numerical modelling en
dc.title.alternative Geothermal training in Iceland en
dc.type Bók is
dc.identifier.gegnir 001034546


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