FIELD: chemistry.
SUBSTANCE: invention relates to oil and gas industry, particularly well repairing and casing, and can be used in remedial cementing for sealing off extraneous water and gas overflow channels in the cement column outside the production casing. The grouting mortar contains, pts.wt per 100 pts.wt microcement CS BTRUO Micro: filtrate reducer PF-BMC 0.25-0.75, setting retarder ZS BMC 0.50-3.00, microsilica MK-85 0.00-10.00, antifoaming agent 0.10-0.30, fresh water 70.0-80.0.
EFFECT: wider range of high-tech grouting mortars with high penetrating power and ultra-low water loss designed for remedial cementing.
2 tbl, 1 ex
| Title | Year | Author | Number |
|---|---|---|---|
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|
RU2557268C1 |
| GAS-BLOCKING PLUGGING MATERIAL FOR CEMENTING HORIZONTAL WELLS WITH SMALL ANNULAR GAPS | 2014 |
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| GROUTING MORTAR | 2011 |
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| LIGHT-WEIGHT GASPROOF PLUGGING MATERIAL FOR CEMENTING OVER-PRODUCING INTERVALS (VERSIONS) | 2012 |
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|
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| BACKFILL FOR CEMENTING WELLS WITH HIGH GAS RATIO | 2011 |
|
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| LIGHTENED CEMENTING SOLUTION, CEMENTING SOLUTION FOR PRODUCTIVE ZONE OF WELL AND METHOD FOR CEMENTING WELLS | 2004 |
|
RU2255204C1 |
