WorldWide Drilling Resource
31 WorldWide Drilling Resource ® JULY 2015 On the Horizon ~ Chile’s First Geothermal Plant Compiled by Bonnie Love, Editor WorldWide Drilling Resource ® With more than 300 natural hot springs, and over 10% of the world’s active volcanos, Chile has great poten- tial for geothermal power generation. Some experts believe the country could produce as much as 16,000 megawatts of geothermal power. This would be enough to provide for roughly 90% of the currently installed capacity. Despite the country’s rich geothermal potential, there are no geothermal power plants, which is why Chile is considered one of the most underdeveloped geothermal countries in the world. The Chilean gov- ernment is actively trying to change that. In 2000, the Chilean government created a geothermal law to promote the exploration and development of geother- mal resources by private enterprises. Since then, the country has been eager- ly exploring geothermal locations to determine the best location for its first geothermal power plant. Recently, Energy Development Corp. (EDC) announced plans to begin a geo- thermal well in Mariposa, Chile, this fall. “We are undertaking the first major inter- national drilling campaign of EDC in October this year in Chile,” EDC Vice President and Managing Director for Latin America Arman Lapus said. The firm is planning to drill two to three wells this year to assess the availability of steam. Most of the promising exploration sites are located in the country’s northern volcanic zone, but the high altitude and arid environment has created some logis- tical issues. Exploration in the central southern volcanic zone is also seeing a great deal of activity. However, due to the glacial mor- phology of the area, access to drill sites has been limited to certain times of the year. Ormat Technologies, Inc. recently announced its wholly owned subsidiary, Orandina I S.p.A., was selected for a $98.8 million engineering, procurement, and construction contract for a geother- mal project in Chile. In fact, there are two projects which are very close to completion. The Cerro Pabellón which has two production wells drilled to roughly 5900 feet locating tem- peratures of 473ºF (245ºC), two injec- tion wells, as well as one slim hole well at nearly 2300 feet with temperatures of 410ºF (210ºC). Early results indicate the potential for each well to produce 5-10 megawatts of power. This project has been given permission to build a 50-megawatt geothermal plant which is expected to be operational by 2018. Also scheduled to be operational by 2018, is the 70-megawatt Curacautín project. So far, it has two production wells drilled to over 8200 feet locating geother- mal sources of 550ºF (300ºC) and four slim holes drilled to about 3600 feet with temperatures around 570ºF (300ºC). The company believes each well is capable of producing 3-12 megawatts of power. With over 85 geothermal exploration and exploitation concessions, the country is well on its way to meeting its goal of producing 150 megawatts of geothermal power by 2020. Primera Planta Geotérmica en Chile ~ En el Horizonte Compilado por Bonnie Love, Editor WorldWide Drilling Resource ® Con más de 300 fuentes naturales térmicas, y más del 10% de los vol- canes activos del mundo, Chile tiene un gran potencial para la generación de energía geotérmica. Algunos expertos creen que el país podría producir hasta 16.000 megavatios de energía geotérmica. Esto sería suficiente para proporcionar aproximadamente el 90% de la capacidad actualmente instalada. A pesar del gran potencial geotérmi- co del país, no existen plantas de energía geotérmica, por lo cual Chile es conside- rado uno de los países geotérmicos más subdesarrollados en el mundo. El gobier- no Chileno está activamente tratando para cambiar eso. En el 2000, el Gobierno Chileno creó una ley geotérmica para promover la exploración y desarrollo de recursos geotérmicos por empresas privadas. Desde entonces, el país ha estado ansiosamente explorando lugares ge- otérmicos para determinar la mejor ubi- cación para su primera planta de energía geotérmica. Recientemente, Energy Development Corp. (EDC) anunció planes para comen- zar un pozo geotérmico en Mariposa, Chile, este otoño. “Estamos llevando a cabo la primera gran campaña interna- cional de perforación de EDC en octubre de este año en Chile,” dijo el vicepresi- dente de la EDC y Director General para América Latina Arman Lapus. La firma planea perforar dos a tres pozos este año para evaluar la disponibilidad de vapor. La mayoría de las áreas de explo- ración prometedoras se encuentran en la zona volcánica del norte del país, pero la gran altitud y ambiente árido ha creado algunos problemas logísticos. La exploración en la zona volcánica sur central también está viendo gran de actividad. Sin embargo, debido a la mor- fología glacial de la zona, el acceso a los sitios a perforar se ha limitado a ciertas épocas del año. Ormat Technologies, Inc. reciente- mente anunció su filial en propiedad absoluta, Orandina I S.p.A, fue selec- cionado para una adquisición y contrato de construcción por $98.8 millones para un proyecto geotérmico en Chile. De hecho, existen dos proyectos que están cerca de ser finalizados. El Cerro Pabellón el cual tiene dos pozos de producción perforados a aproximada- mente 5.900 pies con temperaturas de 473ºF (245ºC), dos pozos de inyección, así como un pozo delgado en casi 2.300 pies con temperaturas de 410ºF (210ºC). Los primeros resultados indican el potencial Photo of the Cerro Pabellón project in the northern volcanic zone. Enel Green Power photo courtesy of the United Nations University Geothermal Training Programme. 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On the Horizon trans. cont’d on page 62.
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