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2 374 292

(13)

(51)

IPC

C09K8/20(2006-01-01)

(21) (22)

Application

2007148054/03, 2007-12-05

(24)

Start date

2007-12-05

(22)

Actual filing date

2007-12-05

(45)

Published

2009-11-27

(72)

Inventor

Mandel' Aleksandr JakovlevichMuljukov Rinat AbdrakhmanovichKletter Vladimir Jur'EvichAkopjan Ehduard BogdanovichKartsev Aleksandr Jur'Evich

(73)

Holder

Mandel' Aleksandr JakovlevichMuljukov Rinat AbdrakhmanovichKletter Vladimir Jur'Evich

INHIBITING DRILL FLUID Russian patent published in 2009 - IPC C09K8/20

Abstract RU 2374292 C2

FIELD: chemistry.

SUBSTANCE: invention relates to construction of oil and gas wells, specifically to water-based drill fluids for drilling wells. The inhibiting drill fluid contains, wt %: polyglycol 8 to 12; bentonite 2 to 3; reagent-stabiliser 0.4 to 0.9; lubricant additive 1 to 2; floatation reagent 1 to 1.5; anti-foaming agent 0.01 to 0.02; water 80 to 86; carbonate filling material - the rest, until specified density of the said solution.

EFFECT: improved inhibiting properties of drill fluid.

1 ex

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RU 2 374 292 C2

Authors

Mandel' Aleksandr Jakovlevich

Muljukov Rinat Abdrakhmanovich

Kletter Vladimir Jur'Evich

Akopjan Ehduard Bogdanovich

Kartsev Aleksandr Jur'Evich

Dates

2009-11-27—Published

2007-12-05—Filed