Nanotechnologies in Construction: A Scientific Internet-Journal

20-34

Authors: Mukhametshin V.Sh., Zeigman Yu.V., Andreev A.V.

The subject of research is the process of oil extraction from deposits of the Kushiro-Podolsk age of the Volga-Ural oil and gas province. These are the features of the objects: • poor reservoir properties of the formation; • high geological heterogeneity by various parameters; • closed deposits near oil-water contact surface; • fissuring and cavern porosity of different degrees; • wide ranges of values change for geological, physical and chemical properties of layers and fluids saturating them; • lenticular structure of reservoirs. Under these conditions the deposits development is often accompanied by: • intensive reservoir pressure reduction in the absence of water injection into the formation.

66-80

Authors: Massalimov I.А., Chuykin А.Е., Massalimov B.I., Urakaev F.H., Uralbekov B.M., Burkitbaev M.M.

The data of studies on the effectiveness of impregnation with polysulfide solutions of shell limestone used as facing and wall material, as well as for the manufacture of road products are presented. Modification of the limestone with the impregnating composition «Akvastat» created by the authors which is sulfur-containing water-based solution of calcium polysulfide containing alcohols and surfactants, can significantly reduce water absorption and increase durability of limestone. Impregnating composition on the basis of calcium polysulfide possesses density of 1.22–1.24 g/cm3, the infiltrant penetrates into the pore structure of limestone to a depth of 4 cm or more, depending on the density and structure of the sample. While the material is drying, sulfur nanoparticles are crystallized from the polysulfide solution in its pores.