| 摘要 |
FIELD: oil and gas industry.SUBSTANCE: composition for isolation of water inflow in the well that includes sodium silicate, sodium methyl siliconate and gelling agent; it contains as sodium silicate aqueous solution of sodium silicate with M=2.7-3. and density of 1360-1450 kg/m, as gelling agent - 10-20% aqueous solution of commercial calcium chloride or , or mineralized water with density of 1150-1200 kg/mand additionally acrylamide copolymer with sodium acrylate and wood flour with the following ratio of components, weight parts: aqueous solution of sodium silicate 100, sodium methyl siliconate 10-50, gelling agent 10-50, acrylamide copolymer with sodium acrylate 0.05-0.5, wood flour 1-5.EFFECT: prolonged duration of water isolation effect and expanded functionalities of the composition.1 tbl |
