| 摘要 |
FIELD: oil production industry, particularly to kill gas-condensate and oil wells with the use of special fluids before well-workover operation performing, especially under low temperatures. ^ SUBSTANCE: well killing fluid mainly includes polyglycoles, aliphatic alcohol and water. Hydrolyzed floatation agent - oxal is additionally introduced in well killing fluid. Above components are taken in the following amounts (% by volume): glycols - 5-30; hydrolyzed floatation agent - 55-70; aliphatic alcohol - 10-15; remainder is water. Aliphatic alcohol is ethyl, isopropyl or butyl alcohol. ^ EFFECT: reduced foam formation, increased frost-resistance possibility to maintain collecting properties of payout bed. ^ 2 cl, 3 ex, 1 tbl |
