| Title | Predictions of Reservoir Performances for Different Development Scenarios at Momotombo Geothermal Field, Nicaragua |
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| Authors | Enrique Porras, Ryuichi Itoi, Hikari Fujii and Toshiaki Tanaka |
| Year | 2005 |
| Conference | PNOC-EDC Geothermal Conference |
| Keywords | |
| Abstract | The three-dimensional numerical model developed for the Momotombo geothermal reservoir was initially used for natural state simulation and production simulations for almost 21 years since the start of operation from 1983 to 2004. The numerical model was also used in predicting the performance of the reservoir under different production and reinjection scenarios. The model predicted that the reservoir can supply the required steam at the current production level (~33MWe) for the next 15 years and only one production well would be needed with the present reinjection scheme. The results indicate that a maximum of two additional make-up production wells, together with 25% production recovery after work over of four shallow production wells, will be needed to maintain steam production of 400 t/h (50MWe) for the next 15 years, only if new reinjection wells are drilled to the east of the well field. On the other hand, steam production will drop at around 9 t/h/year, if the present reinjection wells are used, and around four make-up production wells will be needed in sustaining 400 t/h of steam production. |