FIELD: oil and gas production.
SUBSTANCE: area of invention is completion and reparation of oil and gas wells and invention can more particularly be used under abnormally high formation pressure and high temperature conditions to drill out salt-bearing deposits, to perform primary and secondary exposing of productive formations, to kill wells and to perform a variety of operations during reparation of wells, including situations wherein hydrogen sulfide is present in formation fluid. Composition according to invention contains. wt %: calcium chloride 31-69, calcium nitrate 28-67, bivalent metal oxide or acetate 0.5-1.2, amine-type corrosion inhibitor 0.75-2.5, and optionally filtration reducer.
EFFECT: extended fluid application area.
2 cl, 1 tbl, 6 ex
| Title | Year | Author | Number |
|---|---|---|---|
| COMPOSITION FOR PREPARING PROCESS LIQUID FOR COMPLETION AND REPAIR OF OIL AND GAS WELLS | 2007 |
|
RU2363717C1 |
| COMPOSITION FOR PREPARATION OF PROCESS LIQUIDS WITHOUT SOLID PHASE OF DENSITY TO 1,60 g/m | 2010 |
|
RU2427604C1 |
| COMPOSITION FOR PREPARING HEAVY PROCESS LIQUIDS FOR FINISHING AND REPAIRING OIL AND GAS WELLS | 2009 |
|
RU2406745C1 |
| COMPOSITION FOR PREPARING HIGH-DENSITY NON-SOLID PHASE PROCESS LIQUIDS | 2010 |
|
RU2423405C1 |
| COMPOSITION FOR PREPARATION OF TECHNOLOGICAL LIQUID FOR COMPLETION AND REPARING OF OIL AND GAS WELLS | 2008 |
|
RU2365612C1 |
| COMPOSITION FOR PREPARATION OF HEAVY PROCESS LIQUID FOR COMPLETION AND REPAIR OF OIL AND GAS WELLS | 2013 |
|
RU2519019C1 |
| BASE FOR CALCIUM-FREE WELL-KILLING FLUID | 2011 |
|
RU2470060C1 |
| WELL COMPLETION AND PULLOUT COMPOSITION | 2003 |
|
RU2253664C1 |
| METHOD FOR SHUTTING A WELL | 2004 |
|
RU2255209C1 |
| FLUID FOR WELLS KILLING AND COMPLETION | 2008 |
|
RU2379325C1 |
