A lot it has been speaking these last months about the pozos of fracking, also known like a system of extraction by means of hydraulic fracture. And it is that in spite of having multiple systems of security, the true is that in United States has been able to check that some of them are defective by what finish contaminating the subterranean water.
This has done that it increase the worry by the environmental consequences that can derive of this situation.
It has been able to arrive to this conclusion after the realisation of several scientific studies carried out during the last year, analysing the seismic risk as well as the pollution of the aquifers of the first pozos that were built by there by the years 60 in Oklahoma and Pennsylvania.
However, the experts have showed that the danger does not proceed directly of the pozos in yes, but the problem are the failures in the construction and the wears that produce in the cover of protection of the interior of the pozo.
By his part deny that the technician of hydraulic fracture was the reason this pollution, but directly they derive the responsibility to these systems of protection that with the step of the time go deteriorando or even in occasions do not arrive to manufacture of the suitable form.
These are the conclusions obtained and published in the magazine Proceedings of the National Academy of Sciences through a study carried out by a team directed by the researcher Thomas Darrah of the University of Duke.
In total has analysed 133 samples obtained of the subterranean waters colindantes to the pozos in Pennsylvania and Texas. It proceeded to analyse the noble gases and the hydrocarbons of said samples thanks to which can be totally convinced of his origin.
The positive part is that in any moment has detected that it exist a migration of gas because of the perforación, but is important to consider so much the cimentación like the cover of protection of the pozos since during the studies has been able to check that at least in four cases exist desperfectos that give place to the leak.
In essence, the team has the intention to move his worry to the experts with the aim to strengthen the security of these pozos since it treats of an economic and viable process, avoiding so it follow increasing the worry by part of the citizens and, of course, with the main aim to leave to contaminate the waters potables subterranean.
Beyond all doubt it treats of a quite controversial subject, but the managers already have recognised that will proceed of the suitable form to finish with the problems of pollution.