Traunreut (he). Traunreut is the first site of a geothermal drilling in the district of Traunstein. As such, it fits very well that the city - as reported - today and tomorrow as a center of geothermal experts will. Here, namely the Technical Committee meeting of the Geothermal Society for Mining, Metallurgy, Resource and Environmental (GDMB). For this spring, more than 40 experts from all over Germany and Switzerland have announced.
The 50 meter high tower is the landmark of the geothermal borehole at Weis Brunn. On the right, Thomas New, Traunreut the Managing Director of Power Company. Photos: he
Wanted to invest why the Munich-based investor group Grünwald Equity Geothermal GmbH calculated in Traunreut 70 million euros in a geothermal project has three main reasons: the existence of a remote heating network, the presence of numerous findings in the subsurface and third, the groundwork for a project developer, the idea for this had, but not the sufficient funds.
And so it happened that the green forest in search of equity investments in this project in the district of Traunstein came. "Grew up in the coal" in the person of Thomas Neu from Virginia who, as he says himself, is, investors have found a man who has made this project to his heart's desire and with a mixture of stress, persuasion and noise drives - so that should as soon as possible white smoke from the drill site in the White Brunner rising field.
The comparison to the papal election is close. For centuries, observers have erupted in cheers when the Sistine Chapel in Rome, white smoke rose and announced that a successful Election. Or so the employees are new to the drill site in Weis Brunn, led by Thomas, to be very happy if this white steam gushes out of the over four kilometers deep hole.
If that were so far is that the giant drill - composed of nothing but the way some eleven meters long drill parts - advanced into the region in which the hot water is so eagerly sought. Currently, the drill at a depth of around 4300 meters and has reached that reaches the top of the local malmkarstic, an educated, some 150 million years ago, limestone layer. If this layer is about 500 meters thick drilled, then should come the drills in the water-bearing area. This water should then be hot around 130 degrees - and come up with an appropriate vapor pressure at the surface - each in an amount of 130 liters per second.
This important event should occur, according to the schedule from mid-July and mid August. This is followed by first a period of several weeks of ongoing pumping test before it sets about to "dig" the second the same deep hole so that water can return to where it came from - after it has released over a heat exchanger, its heat or energy .
When the clouds of steam rise to the surface, you will see that in the environment not only smell but probably can. "It can come by hydrogen sulfide odor," says New. The fumes and the smell could be spread over a period of three weeks. And the same again, even if the second hole meets water. This is the geothermal CEO expects a "Christmas present".
The work completed at the holes in each of the following several weeks of pumping tests require longer leads, the THW will be in charge. Depending on the level of cleanliness in the water treatment plants or stone Traunreut or is directly discharged into the River Traun.
Thomas Neu is currently, as the project is lagging behind due to various obstacles smaller than seven weeks behind schedule, assuming thatthe Traunreuter can be expected to be supplied in the winter of 2013 with warm water. The official completion of the work to be done in the second quarter of 2014th
But that day is still a lot of water flowing down the river Traun, as I said, sometimes enriched by some in water, whether Weis Brunn. For the drilling process, which is now drawing to its end, there must be so again. Again, it goes to about 5000 meters into the ground.
But that does not think like you would, just vertical. Instead, engineers are preparing for their first look one incredible boring process. The second hole begins at the surface while a mere 7.5 meters adjacent to the present, but then at the low point to be located up to a mile from the old hole. Simply put: It is drilled at an angle. Even now: The current drilling is deflected to 2700 meters depth at an angle of 53 degrees.
The reason is that the conditions in the soil should be mixed up as little as possible. After all, the water supply is still a very important intervention in the soil and to the return of the water as best they can be compensated.
The water from the Earth emits a portion of its heat and is around 55 degrees back into the earth. To the discharge point is located by the reheating of the thermal water on hot rocks in the Earth Energienachfuhr despite a colder zone spread, which is reached in about 50 years, the production well. That is, will be expected that with a temperature decrease at the production well of one degree Celsius. 50 years - as long as the permit is valid by the mining authority.
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