FIELD: oil and gas industry, particularly compositions to treat bottomhole formation zone.
SUBSTANCE: composition comprises hydrochloric acid HCl in amount of 24.2% by weight, hydrofluoric acid HF in amount of 9.0-10.3% by weight,, inhibitor, namely ascorbic acid C6H8O6 in amount of 3.6-5.2 % by weight and water in amount of 57.8-62.5% by weight.
EFFECT: reduced solubility of mineral contained in rock having high clay cement content.
1 tbl
| Title | Year | Author | Number |
|---|---|---|---|
| PROCEDURE FOR TREATMENT OF BOTTOMHOLE ZONE OF TERRIGENOUS RESERVOIR | 2009 |
|
RU2417309C1 |
| COMPOSITION FOR TREATMENT OF FACE-ADJACENT BED ZONE | 2004 |
|
RU2256073C1 |
| METHOD TO STIMULATE HYDROCARBON INFLOW FROM WELL CHARACTERIZED BY ABNORMALLY HIGH RESERVOIR PRESSURE | 2006 |
|
RU2316646C2 |
| BOTTOMHOLE FORMATION AREA ACIDIZING METHOD | 2004 |
|
RU2269648C1 |
| COMPOSITION FOR TREATING WELL BOTTOM ZONE | 2008 |
|
RU2374295C1 |
| ACID COMPOSITION FOR TREATING TERRIGENOUS OIL RESERVOIRS AND A METHOD FOR ACID TREATMENT OF BOTTOM AREA OF FORMATION | 2003 |
|
RU2244816C1 |
| METHOD FOR DETERMINING CHANGES IN THRESHOLD FILED OF ROCK SPECIMEN IN ACID COMPOUNDS | 2001 |
|
RU2184364C1 |
| METHOD DETERMINING RESTORATION OF PERMEABILITY OF ROCKS | 2002 |
|
RU2224105C1 |
| ACID COMPOSITION FOR TREATING TERRIGENOUS OIL RESERVOIRS AND A METHOD FOR ACID TREATMENT OF THE BOTTOM ZONE OF FORMATION | 2003 |
|
RU2242605C1 |
| METHOD OF SELECTION OF INTERVALS IN WELL SECTION FOR TREATMENT WITH HYDROCHLORIC ACID | 2001 |
|
RU2205951C1 |
