| The sinking of drill holes has always been one of the most important tasks of mankind. Generally, these drill holes are needed to supply humans and their environment with vitally important fresh water. Experience, the latest technology, a staff which is optimally trained and cooperation between specialist companies, construction managers and orderers which is based on trust are the essential preconditions for success, and with this, for the satisfaction of the customer.
E+M is a valued partner, be it for the water development of municipalities, public baths or the industry, or for research drill holes and ground investigations. For this, experience and expert knowledge is a basic precondition in order to be able to solve even the most difficult drilling and well development problems. With our many years of experience, we dispose of these qualifications – for the benefit of our customers.
The No.1 food product is our No.1 as well.
The development of water resources – be it „normal“ gound water, valuable mineral water or water for geothermal plants – is one of our core competencies.
Drilling methods
Air lift drilling: The method which is based on the principle of the mammoth pump is the classical technique for well sinking. By means of air which is pressed in, the drill spoil, together with the drilling water, is transported out of the drill hole.
In solid and loose rock, the E+M technology allows for drilling depths of 50 m, 100 m or 200 m and deeper. The wells can be realised with construction diameters of 200 – 500 mm (DN 200 – DN 500).
Wash drilling (rotary drilling): Here, the functional characteristic is the cycle for the rinsing fluid, which continuously transports the drill spoil upwards. This technique is suitable for drill holes in solid and loose rocks.
Shallow drillings with large diameters: These are drillings with diameters of up to 1800 mm in loose rock. They are realised as dry drillings with stabilising pipes.
Geothermal probe drillings: For the utilization of geothermal energy in connection with the installation of geothermal plants, drill holes are produced with depths of 50 to 200 m, in order to be able to install the geothermal probes.
Core drilling: For the description and geotechnical evaluation of underground conditions, the creation of an underground model, for calculations concerning the stability and settlement, the geotechnical documentation and the like, core drillings as dry drillings with an intact and unaltered drilling core are theright technique.
Hammer drilling: Hammer drillings with a drilling hammer on the drill pipe allow for a quick driving, even in solid rock. This technique, which e.g. is used to create measuring points for the measurement of the quality of the groundwater, can be combined with wash drilling (air lift drilling).
Dry drilling: Besides the dry drilling methods already described, E+M also performs dry drillings as grab drillings and wire line drillings in solid and loose rock.
The mastering of drilling tasks with special requirements is one of the particular capability characteristics of E+M. An example for this would be the drilling of deep boreholes by means of the preventer and locking system technology. We are here talking about special drill holes with depths of up to 2,000 m, e.g. angle drill holes, deflected drill holes or directional bore holes for geothermal and mining technology, which lead through pressurized soil formations (e.g. because of gas inclusions). By means of the preventer and locking system technology it is made sure that the pressurized medium does not leave the drilling area in an uncontrolled manner.
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