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Travel letter from the world’s warmest geothermal well. Part 2.

A while back we wrote a letter from the worlds hottest geothermal well. Back then we were close to measuring  supercritical conditions (temperature above 374 °C and pressure above 220 bar) with our logging tool.

Geothermal well in Italy. Here they measure temperatures 3000 meter below ground level. Photo: SINTEF
Geothermal well in Italy. Here they measure temperatures 3000 meter below ground level. Photo: SINTEF

Another attempt

On the 28th of November we went back to the well for another attempt. This time it went very well, and on Friday, 1st of December, the PT (pressure and temperature) logging instrument SINTEF has designed in the H2020 project DESCRAMBLE measured a temperature of 443.6 °C in the well.

This is a new world record for electronic logging tools for geothermal wells.

SINTEF researcher Morten Røed is very happy with the world record. Here i is keeping his fingers crossed before lowering the logging tool into the well. Photo: SINTEF
SINTEF researcher Morten Røed is very happy with the world record. Here he is keeping his fingers crossed before lowering the logging tool into the well. Photo: SINTEF

The well is drilled by ENEL Green Power in the DESCRAMBLE project. The depth this temperature was measured at was 2810 m and the well has a total depth of 2900 m.

The project has now reached the goal of demonstrating drilling of a supercritical well and will end in December. In March 2018 the project will have a final conference in Pisa

Follow #SINTEFblogg – we will report from Pisa when we are there 🙂

Magnus Hjelstuen and Morten Røed
SINTEF Digital – Smart Sensor Systems

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