87. Before drilling at a measured depth of more than 10 m under the shoe of any casing subsequent to the conductor casing, the authorization holder must test the integrity or the leak pressure of the geological formation.
The test must be conducted at a pressure that ensures the safety of the drilling work to the installation depth of the next casing string planned.
The integrity is confirmed if the stabilized pressure is at least 90% of the pressure applied over a minimum interval of 10 minutes.
1251-2018O.C. 1251-2018, s. 87.