FIELD: oil and gas production. SUBSTANCE: foam-forming composition appropriate to kill wells under low-formation pressure conditions contains, %: surfactant mixture including condensed sulfite-alcohol distillery dregs in the form of 25-% aqueous solution, 17-19; furfuryl alcohol production bottom residues, 0.05-0.22; liquid hydrocarbon foam stabilizer, 12-15; peat (solid phase), 3-7; and, as aqueous phase, aqueous calcium chloride solution with density 1180-1200 kg/cu.m. EFFECT: increased stability and blocking property of composition, which preserves natural permeability of productive strata after unblocking. 4 dwg, 1 tbl, 5 ex
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Authors
Dates
2000-07-20—Published
1998-05-26—Filed