FIELD: oil and gas industry.
SUBSTANCE: composition contains di-sodium salt of ethylene-diamin-tetra-acetic acid, sodium hydroxide, ethylene glycol and water at following ratio of components, wt %: di-sodium salt of ethylen-diamin-tetra-acetic acid 9-15, sodium hydroxide 2-6, ethylene glycol 20-40 and water the rest.
EFFECT: composition possesses upgraded dissolving capacity relative to non-organic sediments of complex composition with inclusions of sulphide and iron oxide in them in wide range; also there is facilitated increased capacity of dissolving, high lubricant ability and added capacity to retain ions of iron in dissolved condition.
3 tbl, 1 ex
| Title | Year | Author | Number |
|---|---|---|---|
| REAGENT COMPOSITION FOR DISSOLVING SULFATE COLMATANT | 2019 |
|
RU2717851C1 |
| COMPOSITION FOR REMOVING GYPSYM DEPOSITS | 0 |
|
SU912744A1 |
| WEAPON CLEANING COMPOSITION | 2018 |
|
RU2702513C1 |
| COMPOSITION FOR DISSOLVING BARIUM SULFATE PRECIPITATE | 2021 |
|
RU2775634C1 |
| COMPOSITION FOR REMOVING BARIUM AND CALCIUM SULPHATE SCALING AND METHOD FOR APPLICATION THEREOF | 2020 |
|
RU2758371C1 |
| DESTRUCTION METHOD OF SULPHATE-CALCIUM DEPOSITS DURING OIL PRODUCTION | 2010 |
|
RU2468188C2 |
| COMPOSITION FOR REMOVAL OF DEPOSITS OF INORGANIC SALTS IN WELL (VERSIONS) | 2017 |
|
RU2688992C1 |
| METHOD OF SPENT ALKALINE GALVANIC COPPER PLATING ELECTROLYTE REGENERATING | 2015 |
|
RU2603933C1 |
| FORMULATION OF CAR COOLING AGENT COMPATIBLE WITH OTHER COOLING AGENTS | 2019 |
|
RU2748915C2 |
| COMPOSITION FOR REMOVING DEPOSITS OF COMPLEX MINERAL-ORGANIC NATURE FORMED IN A WELL DURING EXTRACTION OF HYDROCARBON OR MINERAL RESOURCES | 2019 |
|
RU2723426C1 |
