Publication Name: Australasian Exploration Geoscience Conference 2018
Authors: Mohammed Kurdi, Hamid Roshan
Date Published: February 2018
Number of Pages: 9
Abstract:
Unconventional shale reservoirs are characterised by their extreme low permeabilities and their high in-situ stresses. Multi-stage hydraulic fracturing therefore plays a key role in developing such reservoirs. However, depending on the in-situ stress magnitude and/or regime, breakdown pressures can be too extreme to achieve, given the available surface horsepower capabilities. The local principal stresses surrounding perforation tunnels dictate the required breakdown pressure to induce enough stress to exceed the rock tensile strength.