FIELD: well drilling for oil and gas. SUBSTANCE: composition for insulating absorbing seams has cement dust as binding agent that is the waste of cement production caught by electric filters, difonate agent as hardening time regulator, and water. Difonate-agent is a mixture of sodium salts of nitrilotrimethyl phosphonic, methyl citron dimethyl phosphonic, oxyethylene diphosphonic, phosphonic and sulphur acids. EFFECT: higher efficiency. 1 tbl
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Authors
Dates
1997-01-20—Published
1993-11-11—Filed