GROUTING MORTAR Russian patent published in 2015 - IPC C09K8/467 

FIELD: chemistry.

SUBSTANCE: grouting mortar, which forms dolomitised rock and which contains Mikrodur, calcium chloride, nitrile trimethylene phosphonic acid with density of 1.8 g/cm³, water, calcium carbonate, barium chloride, magnesium chloride brine - bischofite with density of 1.32 g/cm³, superplasticiser S-3, with the following ratio of ingredients, wt %: calcium chloride 2.93-4.01, barium chloride 5.52-7.52, said magnesium chloride brine 6.37-8.69, calcium carbonate 11.04-15.05, water 36.42-49.65, Mikrodur 14.54-37.32, superplasticiser S-3 0.27-0.36, said nitrile trimethylene phosphonic acid 0.13-0.18.

EFFECT: broader processing capabilities of the grouting mortar and field of use thereof by increasing density of the mixture with simultaneous improvement in fluid resistance and longevity of the grouting rock in conditions with hydrogen sulphide, as well as in conditions of carrying out recovery work associated with treating a borehole with hydrochloric acid.

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