FIELD: oil and gas industry.
SUBSTANCE: compound for preventing deposits of non-organic salts in oil-field equipment, in wt %: agent PAF-13A 1.5-15, which represents aqueous solution of polyethylenepolyaminemethylphosphonate admixed with sodium chloride, acid sodium salts of phosphoric and phosphorous acids and ethyleneglycol - 2-10. It contains additionally in wt %: aqueous solution of the mixture of sodium salts of nitrilotrimethyl-phosphonic acid and hydrochloric acid - production wastes of chelating agent Korilat 75-90, sodium hydrate - 0.35-3.4, nitrilotrimethyl-phosphonic acid (NTF) - 1.5-4.0, thiocarbamide - 0.05-0.2.
EFFECT: compound is an effective inhibitor to prevent deposits of carbonate and sulphate non-organic salts; it has low unit costs, low corrosion activity towards metal equipment, low freezing temperature and prevents saline deposits in conditions of oil production with any degree of water content.
8 tbl
Title | Year | Author | Number |
---|---|---|---|
METHOD OF PREVENTING MINERAL SALT AND IRON SULFIDE DEPOSITS | 2000 |
|
RU2165008C1 |
COMPOSITION FOR CALCIUM SALT PREVENTION | 2019 |
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|
RU2255053C1 |
METHOD OF PREVENTING SALT SEDIMENTATION | 0 |
|
SU1414794A1 |
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METHOD FOR PREVENTING DEPOSITION OF MINERAL SALTS AND FERRIC SULFATE | 2002 |
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RU2233376C2 |
METHOD OF PREVENTING DEPOSITION OF CALCIUM SULPHATE AND CARBONATE | 0 |
|
SU893900A1 |
COMPOSITION TO INHIBIT SALT DEPOSITION IN OIL PRODUCTION (VARIATIONS) | 2006 |
|
RU2307798C1 |
METHOD FOR REDUCTION OF HEAT EXCHANGE IN THE WELL AT DEVELOPMENT OF MULTILAYER DEPOSIT | 2015 |
|
RU2591325C9 |
ORGANOPHOSPHONATE COMPOSITION FOR STABILIZATION WATER TREATMENT IN WATER USE SYSTEMS | 2020 |
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RU2745822C1 |
Authors
Dates
2014-10-20—Published
2013-03-18—Filed