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When the hydraulic pressure is removed from the well, small grains of hydraulic fracturing proppants (either sand or aluminium oxide) hold the fractures open. Hydraulic fracturing began as an experiment in 1947, and the first commercially successful application followed in 1950.
01 Dec 2013. In the first two parts of this three-part series on hydraulic fracking we discussed what hydraulic fracking is, its history, and the process of how it works. This final part of the series will cover how different well types utilize hydraulic fracking as well as the reasons and uses of hydraulic fracking. The pressure, flow rate, and composition of fracking fluids used for hydraulic fracking will vary from well to well.