FIELD: oil and gas industry.
SUBSTANCE: expansive plugging material includes the following, wt %: plugging Portland cement 55-70, slate ash 20-30, magnesite 10-15.
EFFECT: uniform expansion of plugging material during the curing process, slowing down of its curing time, and increasing strength of cured plugging material.
2 ex, 1 tbl
| Title | Year | Author | Number |
|---|---|---|---|
| SPREADING ADDITIVE FOR BACK-FILL MATERIAL | 2007 |
|
RU2342416C2 |
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| ACID-SOLUBLE BACKFILL COMPOSITION | 2010 |
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|
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|
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RU2710650C1 |
