| abstract |
Cement slurries, cured cements, and methods of making cured cements, as well as methods of using cement slurries, are provided. Among other properties, cement slurries have improved elasticity and self-healing properties, and can be used, for example, in the oil and gas drilling industry. The cement slurry includes water, a cement precursor material, and a block copolymer composition. The block copolymer composition has at least one copolymer backbone, each copolymer backbone comprising at least two hard segments. Furthermore, the soft segment is provided between at least two hard segments. The copolymer backbone has at least one acid anhydride group grafted onto the soft segment, and the acid anhydride group is cross-linked by an aminosilane cross-linking agent. |