Saving up to 9,000 tons of CO2

Feb 2nd 2010
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Aéroports de Paris picks COFOR to bore a deep geothermal doublet

Aéroports de Paris signed a contract with COFOR to bore a geothermal doublet at Paris-

Orly airport.

The work requires boring two oriented and offset wells, approximately 1750 meters deep.

These two wells, adjacent on the surface, will be approximately 400 metres apart at the

bottom.

Ultimately, over 6,500 linear meters of steel tubes will be used in the drilling operations.

While awaiting the arrival in March 2010 of drilling equipment that will make it possible to

reach the final depth of 1,750 metres, COFOR has started drilling preparations (arranging

the drilling area and positioning the first support tube at a depth of 35 m).

Paris-Orly airport is located above the Dogger aquifer containing warm ground water. At a

depth of 1,700 m, the water temperature reaches 74 °C. According to initial Aéroports de

Paris estimates, it would be possible to obtain a flowrate of almost 250 m3/h. It will be

possible to save approximately 40 GWh of gas, thus avoiding emission of up to 9,000

tons of CO2 each year.

Aéroports de Paris picks COFOR to bore a deep geothermal doublet

Aéroports de Paris signed a contract with COFOR to bore a geothermal doublet at Paris-Orly airport. The work requires boring two oriented and offset wells, approximately 1750 meters deep. These two wells, adjacent on the surface, will be approximately 400 metres apart at the bottom.

Ultimately, over 6,500 linear meters of steel tubes will be used in the drilling operations. While awaiting the arrival in March 2010 of drilling equipment that will make it possible to reach the final depth of 1,750 metres, COFOR has started drilling preparations (arranging the drilling area and positioning the first support tube at a depth of 35 m). Paris-Orly airport is located above the Dogger aquifer containing warm ground water. At a depth of 1,700 m, the water temperature reaches 74 °C. According to initial Aéroports de Paris estimates, it would be possible to obtain a flowrate of almost 250 m3/h. It will be possible to save approximately 40 GWh of gas, thus avoiding emission of up to 9,000 tons of CO2 each year.