FIELD: oil and gas production industry, in particular two-phase foam forming composition for secondary development of clay grouted stratum with non-uniform permeability by perforation under abnormal law stratum pressure.
SUBSTANCE: claimed composition contains foam forming agent, inhibitor, solvent and water. Bone glue in amount of 4-6 mass % is used as foam forming agent and inhibitor, sodium or potassium hydroxide in amount of 0.2-0.5 % is used as solvent, and balance: water. Composition of present invention makes it possible to produce foam with increased order, stability, inhibiting properties, low filtration factor, improved holding properties and to keep integrity of casing string and cement ring.
EFFECT: increased efficiency of secondary stratum development by perforation.
9 ex
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