COMPOSITION PREVENTING SEDIMENTATION OF NON-ORGANIC SALTS AT EXTRACTION OF OIL AND GAS FROM WELLS Russian patent published in 2011 - IPC C09K8/74 

FIELD: oil and gas production.

SUBSTANCE: composition for prevention of sedimentation of non-organic salts at extraction of oil and gas from wells of carbonate and terrigenous beds contains water, hydrochloric acid of fluoro-organic production - rejects of fluoro-organic production containing to 25-30 wt % of hydrogen chloride and to 4-6 wt % of hydrogen fluoride and vat residue of production of glycine of composition wt %: ammonia chloride 16-18, glycine 3-3.5, imine-di-acetic acid 2-2.5, glycol acid 0.35-0.5, urotropin 6-7, water - the rest at following ratio of components, wt %: hydrochloric acid of fluoro-organic productions 15-20, vat residue of glycine production 15-20, water - the rest.

EFFECT: avoiding application of scarce expensive reagents, increased payout of bed due to prevention of non-organic sedimentation at treatment of carbonate and terrigenous payout beds, increased service life of equipment owing to reduced corrosion activity of applied composition, utilisation of vat residue - glycine production reject.

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