FIELD: shutoff of formation water. SUBSTANCE: compound contains, mas.%: sodium silicate 5-8; lignosulfonate 5-6; nonionic surfactant 0.1-1.0; the balance, water with mineralization of 30 g/l. Mineralized water is prepared by mixing water with NaCl. Water glass is weighed and its solution in mineralized water is prepared. Using same procedure, solution of lignosulfonate is prepared, mixed up to complete dissolving, and nonionic surfactant is added. Obtained mixture is slowly added to water glass in mineralized water and stirred for 5-10 min. Prepared compound was rested at 20 C and 80 C to feature increases in stability and strength of gel in mineralized medium of water-cut nonuniform formation of oil, gas and gas-condensate wells. EFFECT: higher efficiency. 3 tbl
| Title | Year | Author | Number |
|---|---|---|---|
| COMPOSITION FOR ISOLATION OF BED WATER | 1994 |
|
RU2067157C1 |
| COMPOUND FOR ISOLATION OF WATER INFLOW TO OIL AND GAS WELLS | 1995 |
|
RU2081297C1 |
| COMPOUND FOR ISOLATION OF BRINE WATER INFLOW | 1996 |
|
RU2118453C1 |
| METHOD FOR ISOLATING BED WATERS INFLUX IN WELLS | 2003 |
|
RU2249670C2 |
| COMPOSITION FOR TEMPORARY INSULATION OF PRODUCTIVE FORMATION | 1999 |
|
RU2150573C1 |
| COMPOSITION ADAPTED TO REDUCE FILTERING ABILITY OF POROUS MEDIUM | 2004 |
|
RU2260673C1 |
| COMPOSITION FOR FORMATION WATER SHUTOFF | 2002 |
|
RU2213214C1 |
| METHOD FOR CONTROL OF FLOODING AREA OF OIL FORMATIONS | 2010 |
|
RU2451168C1 |
| PROCEDURE FOR CONTROL OF RESERVOIR PERMEABILITY | 2010 |
|
RU2431742C1 |
| COMPOSITION FOR RESERVOIR WATERS INSULATION IN HIGH-TEMPERATURE OIL AND GAS WELLS | 2008 |
|
RU2376337C1 |
