FIELD: gas and oil production.
SUBSTANCE: backfilling composition for installation of kick-off support bridges contains wt %: Portland cement 65.3-70.4; microdur 0.72-7.6; poly-carboxylate Melflux F 0.02-0.23; polycem DF 0.07-0.15; poly-oxy-chloride of aluminium 0.06-0.53 and chloride of calcium 0.24-2.12 at their weight ratio 1:4; process water 24.1-28.5.
EFFECT: raised strength of formed cement stone compared and exceeding strength of rock where kick-off support bridge is set; simultaneous facilitation of pumpability, optimal time of hardening and low water-cement ratio.
1 ex, 2 tbl
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