FIELD: oil and gas industry.
SUBSTANCE: insulation method of water influx to production oil wells involves pumping of gel-forming compound prepared by introducing the carbamide to polymer-colloidal complex obtained by mixing of water colloidal solution of aluminium pentahydroxochloride with 0.2÷0.3 wt % of water solution of polymer; at that, as polymer there used is weakly charged cationic polyelectrolyte with molecular weight of 6·106-20·106 and content of cationic groups of 1.65 to 9.20% molar.
EFFECT: increasing oil production owing to reducing water content of extracted products.
4 tbl, 5 ex, 1 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD OF SELECTIVE WATER SHUT-OFF WITHIN PRODUCING OIL WELLS | 2007 |
|
RU2348792C1 |
| METHOD FOR ISOLATION OF WATER PRODUCTION TO PRODUCING OIL WELLS | 2009 |
|
RU2396419C1 |
| METHOD OF PRODUCING WATER-SOLUBLE REAGENT FOR TREATING NATURAL AND WASTE WATER AND SEPARATING PHASES | 2012 |
|
RU2529536C2 |
| METHOD OF PREPARING WATER-SOLUBLE REAGENT TO CLEAN NATURAL AND WASTE WATERS AND TO SEPARATE PHASES | 2005 |
|
RU2288181C1 |
| COMPOSITION FOR INCREASING THE PETROLEUM RECOVERY | 2020 |
|
RU2757943C1 |
| THERMOTROPIC GEL-FORMING COMPOSITION | 2009 |
|
RU2406746C1 |
| THERMOTROPIC GEL-FORMING COMPOSITION | 2014 |
|
RU2557566C1 |
| OIL-CONTAINING WASTE WATER TREATMENT PROCESS | 2005 |
|
RU2288182C1 |
| METHOD OF PURIFICATION OF THE OILY WASTE WATERS AND THE PHASE SEPARATION | 2005 |
|
RU2292308C1 |
| METHOD OF PRODUCTION OF THE WATER-SOLUBLE REACTANT FOR PURIFICATION OF THE SEWAGE AND FOR SEPARATION OF THE PHASES | 2005 |
|
RU2292309C1 |
