M-13.1, r. 1 - Regulation respecting petroleum, natural gas and underground reservoirs

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27. A well drilling licensee shall cement casing by use of the pump and plug method.
Part of the poured cement must surface through the annular space. Failing that, the placing of the casing must be verified by means of a cement-bond log on the internal wall of the hole to determine the exact position of the cement. Except in the cases provided for in the third paragraph, each casing must be cemented up to the surface.
Where the casing could not be cemented up to the surface or, in the case of an intermediate casing, where the technical conditions do not allow it, cementation must be completed by perforation or injection in the annular space to meet the following conditions:
(1)  in the case of cementation of the surface casing:
(a)  the cement column above the shoe must be at least 50% the length of the casing;
(b)  the cement column up to the surface of the ground must be at least 5 m under the ground level or, where the well goes through potable water zone, at least 25 m under the potable water zone;
(2)  whether in the case of the cementation of a subsequent casing, intermediary or production:
(a)  the cement column above the shoe must be at least 150 m;
(b)  the cement column must be present at the level of any porous and permeable zone and at the level of the 100 m above that zone;
(c)  the cement column in the annular space above the shoe of the preceding casing must be at least 50 m.
The licensee shall allow the cement to harden for at least 12 hours before subjecting the casing to a pressure test, allowing the shoe of the casing to be drilled, or the casing to be perforated.
O.C. 1539-88, s. 27; O.C. 1381-2009, s. 18.