INJECTION MANAGEMENT AT THE MIRAVALLES GEOTHERMAL FIELD

摘要

Electricity began to be produced at the Miravalles geothermal field in early 1994. Since then, the installed capacity has increased from 55 MWe to 142.5 MWe. A binary plant (15.5 MWe) will be finishing its final tests by February 2004, increasing the field's capacity to 158 MWe. The management of injection in the field during nearly ten years of exploitation is described in the following sections. The most recent numerical simulation of the Miravalles reservoir suggested changing the distribution of injection (more to the west and less to the south), in order to improve the performance of the reservoir. These changes were implemented, and their results are presented.