143. The cement used must reach a minimum compressive strength of 3,500 kPa after 36 hours of hardening at the temperature of the shallowest formation to be covered.
It must also be designed and installed to protect the integrity of the layers of gas hydrates.
The authorization holder must restrict the cement shrinkage process and limit to the minimum the risk of formation of a micro-annular space.
1251-2018O.C. 1251-2018, s. 143.