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Application

97110962/03, 1997-07-08

(22)

Actual filing date

1997-07-08

(45)

Published

1998-12-10

(72)

Inventor

Shakhverdiev Azizaga Khanbaba OglyPanakhov Gejlani Minkhadzh OglySulejmanov Bagir Alekper OglyAbbasov Ehl'Dar Mekhti OglyGajnanshin Sh.I.(Ru)

(73)

Holder

Zakrytoe Aktsionernoe Obshchestvo

METHOD OF ISOLATING LOST CIRCULATION ZONES IN DRILLED WELL Russian patent published in 1998 - IPC

Abstract RU 2123107 C1

FIELD: drilling of oil and gas wells, in particular, isolation of lost circulation zones in drilled wells. SUBSTANCE: method includes successive supply to circulating drilling mud of fringes of carbonate dust and acid solution. Prior to supply of acid solution fringe supplied to drilling mud is fringe of foam-generating surfactant. In this case, fringes are supplied in the same volumes. EFFECT: higher efficiency due to increased stability of isolating gas-liquid barrier. 2 cl, 1 tbl

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RU 2 123 107 C1

Authors

Shakhverdiev Azizaga Khanbaba Ogly

Panakhov Gejlani Minkhadzh Ogly

Sulejmanov Bagir Alekper Ogly

Abbasov Ehl'Dar Mekhti Ogly

Gajnanshin Sh.I.(Ru)

Dates

1998-12-10—Published

1997-07-08—Filed

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