BACKFILL COMPOSITION Russian patent published in 2024 - IPC C09K8/467 

FIELD: oil, gas and coke-chemical industry.

SUBSTANCE: invention relates to oil and gas industry, in particular to grouting mixtures intended for cementing hydrogeological and geothermal wells, covering intervals of permeable formations at low and normal temperatures. Backfill composition contains “ГЦ-40” alumina cement, a carbon modifier and water. As a carbon modifier, the composition contains fullerene soot with the following ratio of components, wt.%: alumina cement “ГЦ-40”: 66.42–66.44, fullerene soot: 0.07–0.34, water is the rest.

EFFECT: creation of grouting mixture with certain structural-rheological properties of the solution, strength characteristics of stone, which enable to ensure effective isolation of permeable formations in conditions of low and normal temperatures.

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