FIELD: construction.
SUBSTANCE: invention relates to composition of expanding plugging material with adjustable density of mortar and may be used in prefabrication of ready-to-use plugging materials required to cement casing pipes in oil, gas and other wells. Expanding plugging material with adjustable density of mortar, including plain plugging portland cement, ground clay treated thermally at the temperature of 950-1000°C, gaging plaster, silipon, tartaric acid, plasticiser at the following ratio of components, wt %: plain plugging portland cement 37-57, specified clay 39-58, gaging plaster 3-4, silipon 0.01-0.05, tartatic acid 0.01-0.05, plasticiser 0.01-0.45.
EFFECT: increased sedimentation strength, improved adhesion strength.
1 ex, 2 tbl
| Title | Year | Author | Number |
|---|---|---|---|
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