FIELD: oil and gas production.
SUBSTANCE: according to procedure for control over reservoir permeability back-filling composition and chemical initiator of structuring pumped after it and corresponding to 20-35 wt % water solution of calcium chloride are pumped by several alternating portions by 2-10 m3 depending on reservoir capacity. Portions are divided with water spacer of volume excluding portions mixing during pumping. Also, sodium liquid glass mixed with water solution of bio-polymer is used as back-filling composition. Bio-polymer contains 0.2-0.5 wt % of xanthan bio-polymer and 0.03-0.3 wt % of bactericide at ratio from 0.8:1 to 1.4:1.
EFFECT: reduced well production watering at water insulating operations in deposits with desalinated reservoir water of low content of salts.
3 tbl, 1 ex
| Title | Year | Author | Number |
|---|---|---|---|
| DEVELOPMENT METHOD OF OIL DEPOSIT WITH HORIZONTAL WELLS | 2010 |
|
RU2418157C1 |
| METHOD FOR OBTAINING POLYMER-SILICATE COMPOSITION | 2011 |
|
RU2459854C1 |
| OIL DEPOSIT DEVELOPMENT METHOD | 2012 |
|
RU2473794C1 |
| METHOD FOR OIL DISPLACEMENT BY WATERFLOODING | 2007 |
|
RU2365746C2 |
| ISOLATION METHOD OF WATER INFLUX ZONES IN WELL | 2012 |
|
RU2494229C1 |
| OIL DISPLACEMENT COMPOSITION | 2008 |
|
RU2381251C1 |
| HIGHLY INHIBITED CLAY-FREE EMULSION DRILLING MUD | 2018 |
|
RU2698389C1 |
| METHOD FOR DOING REPAIR-ISOLATION WORKS UNDER CONDITIONS OF INTENSE ABSORPTION | 2009 |
|
RU2405926C1 |
| BIOPOLYMER DRILLING MUD SBK-UNI-DRILL-PRO (HARD) | 2013 |
|
RU2561630C2 |
| METHOD FOR EXPLOITATION OF A DEPOSIT WITH POROUS-CAVERNOUS-FRACTURED RESERVOIR BY HORIZONTAL WELLS | 2022 |
|
RU2776552C1 |
