There are a limited number of characteristics which Completion Engineers can control and optimise when developing unconventional resources.  Perforation specifics, Cluster design and Stage Length selection offer the most important suites of levers to be able to achieve the most effective outcome.  This Session will outline best practice that has emerged over the last two decade(s) of execution and will inform and educate the engineering body as to those considerations which deliver the most impactful consistent and sustained results.  The Session will provide a strong foundational position from which all levels of experience with unconventional resource can progress.