| 摘要 |
oil and gas producing industry, particularly, substances used for lining of oil, gas, gas-condensate wells in section of permafrost rocks. SUBSTANCE: nonfreezing plug includes bentonite mud powder, hydrocarbon fluid modified with surfactant and additionally swollen vermiculite sand with the following ratio of components, wt.%: bentonite mud powder, 45-55; swollen vermiculite sand, 3-5; hydrocarbon fluid modified with surfactant, the balance. EFFECT: increased compressibility and reduced heat conduction efficiency of plug. 1 tbl
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