FIELD: oil producing industry; applicable in preparation of plugging mortars in process of oil and gas wells casing. SUBSTANCE: complex reagent includes the following ratio of components, mas.%: sulfacell, 60-90; plasticizer, 9-25; foam suppressor, 1-15. EFFECT: considerable reduction of water loss, absence of foaming, reduced sedimentation, high strength of plugging stone hardening at temperature from 50 to 150 C. 1 tbl, 4 ex
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