FIELD: chemistry.
SUBSTANCE: invention relates to compositions and methods of wellbore processing. A composition for wellbore cleaning contains, wt %: solvent 10-45; cosolvent 10-40; hydrophilisating surface-active substance 5-10; purifying surface-active substance 5-20; non-ionogenic surface-active substance 1-10; non-ionogenic auxiliary surface-active substance 1-5; emulsifying surface-active substance 1-5; water liquid 1-5.
EFFECT: improvement of cement binding in the annulus space between the case pipe and the rock surface.
14 cl, 4 ex, 4 tbl, 2 dwg
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