FIELD: chemistry.
SUBSTANCE: invention relates to the oil and gas industry, particularly to bottom-hole treatment in order to increase production rate, cleaning heating equipment from scale deposits. The acid composition contains the following, in wt %: 24% hydrochloric acid 23-65, oxalic acid 0.5-2.5, acidic ammonium fluoride 0.5-5.0, ammonium persulphate 0.03-0.3, nonionic surfactant 0.05-0.5, isopropyl alcohol 0.5-5.0, water - the rest.
EFFECT: preparation of an acid composition with high effectiveness, which is easy to prepare, transport and use, combined with low toxicity and aggressiveness.
2 tbl
| Title | Year | Author | Number |
|---|---|---|---|
| COMPOSITION FOR ACID TREATMENT OF BOTTOM-HOLE ZONE OF LOW-PERMEABLE TERRIGENOUS BED | 2008 |
|
RU2388786C2 |
| ACIDIC COMPOSITION FOR PROCESSING LOW-PERMEABILITY TERRIGENOUS RESERVOIRS | 2008 |
|
RU2386666C1 |
| ACID SURFACE-ACTIVE COMPOSITION FOR TREATING BOTTOM-HOLE ZONE OF OIL AND GAS WELLS | 2015 |
|
RU2643050C2 |
| ACID COMPOSITION FOR TREATING TERRIGENOUS OIL RESERVOIRS AND A METHOD FOR ACID TREATMENT OF THE BOTTOM ZONE OF FORMATION | 2003 |
|
RU2242605C1 |
| REAGENT FOR TREATMENT OF BOTTOMHOLE OIL FORMATION ZONE AND A PROCESS OF TREATING BOTTOMHOLE OIL FORMATION ZONE | 2006 |
|
RU2319726C1 |
| ACID COMPOSITION FOR TREATMENT OF TERRIGENOUS RESERVOIRS (VERSIONS) | 2020 |
|
RU2744899C1 |
| COMPOSITION FOR PREVENTING FORMATION OF SALT DEPOSITS DURING OIL AND GAS EXTRACTION | 2015 |
|
RU2599150C1 |
| ACIDIC COMPOSITION FOR TERRIGENOUS RESERVOIRS TREATMENT AND SCALE ELIMINATION (VERSIONS) | 2006 |
|
RU2337126C2 |
| MULTIFUNCTIONAL ACID COMPOSITION FOR TREATMENT OF BOTTOMHOLE FORMATION ZONE AND METHOD OF ACID TREATMENT FOR BOTTOMHOLE FORMATION ZONE | 2014 |
|
RU2572401C2 |
| COMPOSITION FOR ACID TREATMENT OF BOTTOM ZONE OF FORMATION | 1995 |
|
RU2117150C1 |
