An experimental study has been carried out to investigate the influence of the cementing chronology. That is to say, cementing of a perforated casing in a stress-free borehole or a loaded borehole resulted in a difference in near wellbore fracture geometry.
Starter fractures, propagating into multiple fractures, were observed when the casing was set and cemented in a stress-free borehole. Cementing the casing in a stressed borehole resulted in a continuous fracture along the wellbore, which sometimes ignored the perforations. Therefore, hydraulic fracturing experiments with the aim to represent field situations should be carried out when the casing is cemented in a stressed borehole.