METHOD FOR WELL BOTTOM ZONE TREATMENT
FIELD: oil production, particularly methods or devices for cementing, for plugging holes, crevices, or the like. ^ SUBSTANCE: method involves injecting and forcing cement mortar into hole annuity at a rate of 435 m3/day; gradually reducing injection rate to zero rate from condition of jet continuity...
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Main Authors | , , , , , |
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Format | Patent |
Language | English Russian |
Published |
27.03.2007
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Subjects | |
Online Access | Get full text |
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Summary: | FIELD: oil production, particularly methods or devices for cementing, for plugging holes, crevices, or the like. ^ SUBSTANCE: method involves injecting and forcing cement mortar into hole annuity at a rate of 435 m3/day; gradually reducing injection rate to zero rate from condition of jet continuity and absence of vacuum in cement mortar flow injected in well. During rate reduction rate is initially decreased from 435 m3/day to 300 m3/day, then rate is reduced to 200 m3/day, to 80 m3/day and finally to 24 m3/day. As injection rate decreases to zero value well pressure is gradually decreased to atmospheric pressure from condition of pressure reduction continuity. After that well is held at rest. ^ EFFECT: provision of completely filling of well environment to be developed with processing medium. ^ 1 ex |
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Bibliography: | Application Number: RU20050139321 |