| 摘要 |
The invention relates to a method and a bead tube (10) for treating ground bores and in particular geothermal bores having a depth of more than 100 metres. The invention is based on the object of providing a method and a bead tube (10) for treating ground bores, by means of which method and bead tube (10) the installation and disassembly times and associated costs can be reduced. In a method according to the invention for treating a ground bore, in which - as in the prior art - acidifications or stimulation work and production tests are carried out in alternation, the following method steps are carried out: ° In order to carry out the acidifications or stimulation work, an acidification string consisting of a plurality of tubes connected together is inserted into the borehole in order to introduce acid into the bore. The tubes are connected preferably via screw connections. The acid used is preferably hydrochloric acid. ° In order to carry out the production tests, a production string consisting of a plurality of tubes connected together is inserted with at least one bead tube (10) into the borehole, in order to introduce air or other gases for carrying out what are known as airlift methods into the bore. ° After an acidification or stimulation work has been carried out, the acidification string is removed only partially from the borehole and disassembled. A bead tube (10) is connected firmly to the acidification string that remains in the borehole. ° A production string is connected to the bead tube (10) and to the acidification string fastened to the bead tube (10) and is inserted into the borehole in order to carry out a production test. |
