Methods and cement compositions for reducing corrosion of wellbore casings

A corrosion inhibiting cement composition for reducing corrosion of wellbore casings, the corrosion inhibiting cement composition comprising:

• 30 wt.% cement precursor based on the total weight of the corrosion inhibiting cement composition, where the cement precursor is API Class G cement;
• 40 percent by weight of cement (BWOC) silica flour;
• 150 percent BWOC of the weighting agent;
• 3 percent BWOC expansion additive;
• 0.2 percent BWOC defoamer;
• 9 percent BWOC latex;
• 1.4 percent BWOC latex stabilizer;
• 2.6 percent BWOC cement retarder;
• and
• 0.9 percent BWOC amine corrosion inhibitor, where the amine corrosion inhibitor comprises a polyethylene polyamine, where the polyethylene polyamine comprises hexaethyleneheptamine (HEHA), one or more polyethylene polyamines having molecular weights greater than a molecular weight of hexaethyleneheptamine, or both;
• and
• the balance water, where the corrosion inhibiting cement composition comprises from 5 weight percent to 70 weight percent water based on the total weight of the cement composition;
• where the corrosion inhibiting cement composition has a thickening time of from 0.5 hours to 6 hours.