Slurry for cementing, especially cementing of lining pipes in drill holes, and method for production of such a slurry

摘要

A slurry is disclosed which contains a hardening mixture of water and cement, especially for cementing lining pipes into drilling holes. The slurry comprises a first slurry component comprising a dispersion of a hardening cement slurry in a liquid capable of forming an encapsulating membrane, and a second slurry component comprising a hardenable cement containing mixture. By mixing the first and second slurry components, there is formed a dispersion of membrane encapsulated cement particles in a cement slurry.