FIELD: oil and gas production.
SUBSTANCE: in composition for isolation of absorption zones, consisting of two reagents, one of which is a bentonite-chalk solution containing bentonite mud powder, technical chalk, sodium chloride and water, and the other one is an aluminium salt solution, bentonite-chalk solution additionally contains sodium silicate, with the following ratio of components, wt %: bentonite mud powder 8.88-9.08, technical chalk 29.66-30.27, sodium chloride 10.81-10.90, sodium silicate 0.18-0.54, water - the rest, and other reagent as aluminium salt contains aluminium polyoxychloride, with the following ratio of components, wt %: aluminium polyoxychloride 54.52-54.56, water - the rest, ratio of bentonite-chalk solution and aluminium salt solution makes 4.0-6.6: 1 accordingly.
EFFECT: wider assortment of isolating compositions used for elimination of zones with intense - catastrophe absorptions and higher plastic strength of plug.
3 ex, 1 tbl
| Title | Year | Author | Number |
|---|---|---|---|
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| LIGHT INSULATING BACKFILL | 2010 |
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| WELLS HIGH INTENSITY ABSORPTION INTERVALS INSULATION METHOD AND AERATED SLURRY FOR ITS EXECUTION | 2008 |
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RU2683456C1 |
