ABSTRACT
The cement slurries applied when fastening wells must provide leakproofness of a timbering and protect an upsetting column from aggressive formation fluids. At the same time for cementation, slurry based on cement and water are used, at water-cement ratio 0.45-0.9 that predetermines their high porosity and low corrosion resistance. The technologies of increase in a durability of concrete applied in structural practice when fastening wells aren‘t acceptable. One of the most aggressive components of formation fluids is a hydrogen sulfide. We are offered for decrease in porosity of a cement stone use of liquid polysulfide sulfur (further PSS) which can be besieged in a stone time when concreting a cement slurry, colmatate the pore space, reduce the diffusion rates of aggressive ions in a cement stone. Besides, PSS being adsorbed in the pores on cement concreting products, will provide pore space inhibition.
