FIELD: oil and gas production.
SUBSTANCE: invention relates to production of oil, gas, and gas-condensate, in particular to reagents for cleaning leakage part of wells and bottomhole formation zone. Acid system according to invention contains: 10.0-20.0% citric acid, 2.4-7.0% poly(ethylene oxide)-4000, and water. According to second embodiment, system contains 10.0-20.0% citric acid, 2.4-7.0% poly(ethylene oxide)-4000, 1.4% polyvinyl alcohol 18/11, and water. According to third embodiment, system contains 30.0-40.0% citric acid, 54.0-63.0% poly(ethylene oxide)-4000, and 6.0-7.0% polyvinyl alcohol.
EFFECT: enhanced cleaning efficiency.
3 cl, 1 tbl
| Title | Year | Author | Number |
|---|---|---|---|
| COMPOSITION OF SURFACE-ACTIVE SUBSTANCES FOR GAS CONDENSATE WELLS | 2016 |
|
RU2629509C1 |
| COMPOSITION FOR TAKING AWAY WATER-CONDENSATE MIXTURE FROM WELL | 2002 |
|
RU2242495C2 |
| RESERVOIR BOTTOMHOLE ZONE ACID TREATMENT COMPOSITION | 2008 |
|
RU2379327C1 |
| TECHNOLOGIC MIXTURE FOR REMOVING LIQUID STRATAL FLUID FROM CONDENSATE WELL WITH ABNORMALLY LOW FORMATION PRESSURE | 2005 |
|
RU2328515C2 |
| ACID COMPOSITION FOR TREATMENT OF BOTTOMHOLE FORMATION ZONE (VERSIONS) | 2015 |
|
RU2611796C1 |
| ACID COMPOSITION FOR PROCESSING THE SURFACE ZONE OF CARBONATE FORMATION | 2017 |
|
RU2652409C1 |
| GAS GENERATING FOAM COMPOUND FOR TREATMENT OF BOTTOMHOLE ZONE OF FORMATION (VERSIONS) | 2007 |
|
RU2351630C2 |
| METHOD FOR COLMATAGE REMOVAL FROM BOTTOMHOLE FORMATION ZONE UPON FIRST OPENING TO RESTORE PERMEABILITY AND POROSITY OF HEADER | 2013 |
|
RU2540767C1 |
| METHOD OF PROCESSING PRIMARILY FLAT HORIZONTAL WELL HOLE FOR REMOVAL OF MUD BULK FROM BOTTOM-HOLE FORMATION ZONE | 2011 |
|
RU2467163C1 |
| REAGENT FOR EJECTING WATER-CONCENTRATE MIXTURE FROM WELL | 1997 |
|
RU2134775C1 |
