METHOD OF PREVENTING MINERAL SALT AND IRON SULFIDE DEPOSITS Russian patent published in 2001 - IPC

Abstract RU 2165008 C1

FIELD: oil and gas production. SUBSTANCE: prevention of deposits of mineral salts, including iron sulfide, occurring in wells and oil-field oil collection and transport system is realized by way of treating association water with aqueous solution of trisodium nitrilimethylphosphonate jointly with maleic acid at 1: 1 ratio, reagent uptake being 0.0004-0.0008 wt.%. Treated water is injected back into formation. EFFECT: neutralized hydrogen sulfide in product and enhanced inhibition of salt deposition in presence of iron ions. 2 cl, 1 tbl

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RU 2 165 008 C1

Authors

Gabdullin R.F.

Ragulina I.R.

Antipin Ju.V.

Valeev M.D.

Dates

2001-04-10—Published

2000-03-24—Filed