155. The authorization holder must submit to the Minister, for approval, the corrective actions to be taken where any of the following situations occurs:(1) a cementing operation provided for in the technical program cannot be carried out;
(2) no cement return is observed on the surface where such return was planned;
(3) a return of drilling fluid indicates that the cement height required for cementing is not reached;
(4) there is uncertainty as to reaching the cementing goals.