FIELD: oil and gas industry.
SUBSTANCE: plugging composition for well producing area stabilizing comprises plugging portland cement, abrasive additive, wherein the composition additionally comprises a defoaming agent and a fluid loss reducer. As an abrasive additive, a foam glass is used having a particle size distribution of 0.35-1.5 mm, water absorption by volume - 2-5%, bulk density of granules 300±50 kg/m3 with the following component ratio, wt % of cement mass: plugging portland cement 100, foam glass 7-13, fluid loss reducing agent 0.3-0.7, defoamer 0.03-0.07.
EFFECT: improved quality of wells stabilising by increasing the plugging composition resistance to acid treatment of the well bottomhole area with reduced waiting time for cement solidification.
1 tbl, 1 ex
| Title | Year | Author | Number |
|---|---|---|---|
| LIGHTWEIGHT PLUGGING COMPOSITION | 2014 |
|
RU2588026C1 |
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|
RU2763195C1 |
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RU2825932C1 |
