| 摘要 |
FIELD: oil and gas production. SUBSTANCE: drilling fluid contains, wt. -%: peat, 5-7; potassium-containing alkaline modifier, 0.5-1.5; potassium chloride, 1-3; polyacrylamide, 0.002-0.004; and water, the balance. EFFECT: improved washing characteristics of fluid. 2 cl, 1 dwg, 1 tbl0
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