| 摘要 |
FIELD: oil industry. ^ SUBSTANCE: bridging composition contains, in weight ratio: 100 of gel powder, 0.01-0.3 of polyoxiethylene, 2-3.5 of the water-swelling polymer AK-639, 5-10 of the hollow glass microspheres, 3-5 of the coal-alkali reagent, 400-500 of water. ^ EFFECT: improved clogging properties of composition due to increased durability and viscosity and elasticity. ^ 1 ex, 1 tbl |
