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 MERKULOV SERGEJ JUR'EVICH, RAKHMANOV RAFKAT MAZITOVICH, KHISAMOV RAIS SALIKHOVICH, SHARIKOV GENNADIJ NESTEROVICH, ISAKOV VLADIMIR SERGEEVICH, KORMISHIN EVGENIJ GRIGOR'EVICH
Format Patent
LanguageEnglish
Russian
Published 27.03.2007
Subjects
EARTH DRILLING
EARTH DRILLING, e.g. DEEP DRILLING
FIXED CONSTRUCTIONS
MINING
OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS
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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
Bibliography:Application Number: RU20050139321