FIELD: oil and gas industry.
SUBSTANCE: composition for acid treatment of bottom-hole zone of low-permeable terrigenous bed includes the following, wt %: inhibited chlorhydric acid (on HCl) 9.0 - 15.0; fluorine-containing reagent - fluorhydric acid or ammonium bifluoride, or ammonium fluoride (on HF) 4.0 - 7.4; neonol and/or phosphonic acid 0.1-2.0; organic solvent - oxal T-66 5.0- 30.0; water - the rest.
EFFECT: increasing efficiency of acid treatment of low-permeable terrigenous beds owing to slowing down the velocity of reaction with rock at bed temperature.
3 ex, 4 tbl, 1 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD OF ACIDISING OF HOLEBOTTOM AREA TREATMENT OF TERRIGENOUS COLLECTOR | 2008 |
|
RU2386803C1 |
| ACIDIC COMPOSITION FOR PROCESSING LOW-PERMEABILITY TERRIGENOUS RESERVOIRS | 2008 |
|
RU2386666C1 |
| HYDROPHOBIC MICELLAR ACID-BASED COMPOUND FOR KILLING, DEVELOPMENT AND COMPLETION OF PRODUCING STRATA DRILLED WITH USE OF NON-AQUEOUS BASED MUDS | 2014 |
|
RU2540742C1 |
| COMPOSITION FOR ACID TREATMENT OF BOTTOM-HOLE TERRIGENOUS FORMATION ZONE | 2016 |
|
RU2614994C1 |
| COMPOSITION FOR INCREASING THE PETROLEUM RECOVERY OF FORMATIONS (VARIANTS) | 2021 |
|
RU2781207C1 |
| BASE OF COMPOSITION FOR OXYGEN TREATMENT OF TERRIGENOUS RESERVOIR AND DECLAYING OF BOTTOMHOLE FORMATION ZONE | 2005 |
|
RU2301248C1 |
| ACID SURFACE-ACTIVE COMPOSITION FOR TREATING BOTTOM-HOLE ZONE OF OIL AND GAS WELLS | 2015 |
|
RU2643050C2 |
| COMPOSITION FOR TREATMENT OF BOTTOMHOLE ZONE OF TERRIGENOUS RESERVOIRS | 2014 |
|
RU2559267C1 |
| ACID COMPOSITION FOR TREATMENT OF TERRIGENOUS RESERVOIRS (VERSIONS) | 2020 |
|
RU2744899C1 |
| REAGENT FOR TREATMENT OF BOTTOMHOLE OIL FORMATION ZONE AND A PROCESS OF TREATING BOTTOMHOLE OIL FORMATION ZONE | 2006 |
|
RU2319726C1 |
