FIELD: chemistry.
SUBSTANCE: invention relates to oil industry, specifically to backfill compositions for remedial cementing. The backfill composition for remedial cementing contains the following in wt %: natural bitumen 23.5-42.4; organosilicon fluid Silor 1.8-4.5; wood flour 0.5-5.0; process water 55.3-67.0.
EFFECT: increased capability of the composition for remedial cementing, prolongation of the effect of the said remedial cementing with reduced cost of repair and consumption of expensive reagents.
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