FIELD: oil and gas industry.
SUBSTANCE: procedure for water shutoff treatment in well includes pumping suspension of water-swellable polymer into shut-off formation. suspension of water-swellable polymer is pumped in three cycles; during the first cycle water-sellable polymer V 50 E is pumped with water of calcium-chloride type with salinity of 120 g/l; during the second cycle water-swellable polymer V 105 is pumped with water of chloride-calcium type with salinity of 60 g/l; during the third cycle water-swellable polymer V 210 is pumped with fresh water.
EFFECT: invention allows improvement of efficiency of water shutoff treatment and increase of overhaul period for the well.
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD FOR PREVENTION OF BOTTOM WATER INFLUX TO PRODUCING OIL WELL | 2016 |
|
RU2620684C1 |
| METHOD FOR ISOLATION OF BOTTOM WATER INFLOW IN OIL WELLS | 2015 |
|
RU2588582C1 |
| METHOD FOR LIMITING WATER INFLOW IN WELL | 2016 |
|
RU2611794C1 |
| METHOD FOR LIMITING WATER INFLUX IN WELL | 2011 |
|
RU2483194C1 |
| METHOD FOR ISOLATING INFLOW OF BOTTOM WATER IN OIL WELLS | 2016 |
|
RU2631512C1 |
| METHOD FOR WATERPROOFING WORK IN FRACTURED MANIFOLDS | 2012 |
|
RU2496970C1 |
| METHOD OF WATER INFLOW LIMITATION IN FRACTURED CARBONE RESERVOIRS | 2015 |
|
RU2614997C1 |
| ISOLATION METHOD OF WELL TROUBLESOME ZONE WITH CARBONATE BASINS | 2012 |
|
RU2494224C1 |
| METHOD OF ISOLATING FLUSHED ZONES IN OIL FORMATION | 2001 |
|
RU2195546C1 |
| WATER INFLOW SHUTOFF METHOD IN FRACTURED CARBONATE RESERVOIRS | 2014 |
|
RU2571474C1 |
