Exemplary embodiments of the cement compositions comprise water, a cement,
and a fluid loss control additive, the fluid loss control additive
comprising a graft copolymer. The graft copolymer comprises a backbone
and at least four grafted monomers selected from the group consisting of
2-acrylamido-2-methylpropanesulfonic acid, acrylamide, acrylic acid,
vinylphosphonic acid, diallyldimethylammonium chloride, and salts
thereof. The backbone of the graft copolymer comprises a humic acid salt.
Methods of cementing using exemplary embodiments of the cement
compositions are also provided.