Xianbiao Bu Archives – The Green Optimistic green tech news, since 2008 Thu, 24 Nov 2011 10:10:27 +0000 en-US hourly 1 https://wordpress.org/?v=7.0 2667534 How Old Oil Wells Could Become Geothermal Energy Sources https://www.greenoptimistic.com/oil-gas-wells-geothermal-energy-20111124/ https://www.greenoptimistic.com/oil-gas-wells-geothermal-energy-20111124/#respond Thu, 24 Nov 2011 10:10:27 +0000 https://www.greenoptimistic.com/?p=21273 One of the main costs when harvesting geothermal energy is the digging itself. Just like oil wells, geothermal wells have to be several kilometers deep, because temperature rises along by 50 degrees Celsius with every kilometer. This is where abandoned oil wells could help generate clean electricity. A team of researchers from the Chinese Academy […]

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