FIELD: oil and gas industry.
SUBSTANCE: invention relates to fastening, development and repair of oil and gas wells, in particular to structured buffer fluids with adjustable density, which are used to separate process fluids of different composition, salinity and density. The composition for producing a weighted structured buffer liquid contains, by weight: salt-resistant palygorskite clay powder 4.62-4.65; stabilizer Natrosol 250EXR - hydroxyethylcellulose consisting of non-ionic hydroxyethyl groups - 0.11-0.12, powder defoamer - 0.05-0.06, technical water - balance.
EFFECT: increased sedimentation stability of the composition, salt resistance in relation to highly mineralized fluids coming from the well-reservoir system when drilling in high-grade horizons.
1 cl, 2 tbl, 6 ex
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