FIELD: oil and gas industry.
SUBSTANCE: invention relates to oil industry, in particular to compositions for isolation of water influx in production and injection wells, and is intended for performance of water shutoff works in high-temperature wells. Composition for isolation of water influx into well contains 1 vol.p. high-modulus liquid glass with silicate modulus of 3.5–6 and 1–9 vol.p. 0.3–0.7 % aqueous solution of sodium silicofluoride.
EFFECT: efficient, easy-to-prepare composition for high-temperature wells and high strength of the formed gel.
1 cl, 1 tbl
| Title | Year | Author | Number |
|---|---|---|---|
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RU2525079C1 |
