Hydraulic Fracturing

Fracturation hydraulique
©iStock.com/Henry Rivers

Method of enhancing the productivity of oil or gas reservoirs with low permeability. It involves injecting pressurized water into the reservoir layer, creating a network of cracks in order to improve extraction. Chemicals can be added to the water, such as hydrochloric acid to dissolve carbonates, hydrofluoric acid to dissolve silica, and sand or glass beads to hold the newly created cracks open.