FIELD: oil and gas industry.
SUBSTANCE: invention relates to oil and gas industry, particularly to selective isolation of highly porous washed by water layers areas in producing well with absence of accurate data about location of mentioned layers areas in heterogeneous oil field collectors. Method of selective isolation of highly porous layer areas includes pump in into well of aquaseal, with following driving, technological isolation and development of well. Into producing well for temporal isolation of low-penetrable areas it is pumped in aquaseal on the basis of sodium silicate with 1.0-2.8% wt of acid gel formation agent, in amount 0.05-2 m3 per 1 metre of net productive formation thickness, then for insulation of highly porous areas of layer it is pumped in aquaseal, containing sodium silicate (liquid glass) and acid gel formation agent, in amount 2-10 m3 per 1 metre of capacity of highly porous layer areas. Pump in is implemented by equal edging with reduction of gel formation time and increasing of acid gel formation agent content in each following edging.
EFFECT: effectiveness increase of selective isolation of highly porous layers.
4 ex
Title | Year | Author | Number |
---|---|---|---|
METHOD OF SELECTIVE INSULATION OF HIGH PERMEABLE ZONE OF RESERVOIR | 2007 |
|
RU2355868C1 |
METHOD OF OIL DEPOSIT DEVELOPMENT | 2001 |
|
RU2204704C1 |
METHOD OF SELECTIVE ISOLATION OF HIGHLY PERMEABLE ZONES OF FORMATION | 1995 |
|
RU2079648C1 |
METHOD FOR TREATING DOWN-HOLE ZONE OF PRODUCING WELL | 1996 |
|
RU2105144C1 |
METHOD OF DEVELOPING OIL DEPOSIT | 1999 |
|
RU2168618C2 |
METHOD OF DEVELOPMENT OF FLOATING OIL POOL | 1994 |
|
RU2076203C1 |
METHOD OF LEVELING INJECTIVITY PROFILE OF INJECTION WELLS AND LIMITING WATER INFLOW TO PRODUCTION WELLS | 2016 |
|
RU2661973C2 |
METHOD OF OIL DEPOSIT DEVELOPMENT | 2001 |
|
RU2189441C1 |
PROCEDURE FOR SELECTIVE SHUTOFF OF WATER-ENCROACHED SECTIONS OF OIL RESERVOIR | 2013 |
|
RU2536529C1 |
METHOD OF CONTROLLING DEVELOPMENT OF NONUNIFORM OIL FORMATION | 2005 |
|
RU2304706C2 |
Authors
Dates
2009-06-20—Published
2007-12-24—Filed