WEIGHTED MINERALIZED GROUTING PORTLAND CEMENT COMPOSITION Russian patent published in 2022 - IPC C09K8/48 C04B28/04 E21B33/138 

FIELD: oil and gas industry.

SUBSTANCE: invention relates to the field of cementing casing strings in oil, gas and gas condensate wells. The weighted mineralized grouting Portland cement composition contains a mixture of dry components - grouting Portland cement without additives PCT I-50, cast steel shot - CSS, shot number 03, and additives - carboxylate type plasticizer WeellFix P-130, 18% sodium chloride solution in the following ratio of the indicated dry components, wt.pts.: oil-well Portland cement without additives type PCT I-50 - 60-80, cast steel shot - CSS, shot number 03 - 20-40; and the content of additives per 100 wt.pts. a mixture of these dry components is, wt.%: plasticizer carboxylate type WeellFix P-130 - 0.1-0.25, 18% sodium chloride solution - 25-30.

EFFECT: improvement of physical and mechanical properties.

1 cl, 1 tbl