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2 286 373

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IPC

C09K8/35(2006-01-01)

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Application

2004133250/03, 2004-11-15

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Start date

2004-11-15

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Actual filing date

2004-11-15

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Published

2006-10-27

(72)

Inventor

Safin Damir KhasanovichAshikhmin Gennadij PetrovichGajfutdinov Gamil' ShajkhutdinovichSharifullin Rafaehl' RifkatovichMakarov Gennadij Mikhajlovich

(73)

Holder

Otkrytoe Aktsionernoe Obshchestvo

DRILLING MUD MODIFYING AGENT Russian patent published in 2006 - IPC C09K8/35 

Abstract RU 2286373 C2

FIELD: petroleum and oil industry.

SUBSTANCE: invention relates to additives for drilling fluids used in drilling and opening productive seams and finishing wells. Modifying agent for drilling fluids comprises, wt.-%: alkylene glycol or mixture of alkylene glycols, 60.0-99.8; polyalkylene glycol alcoholate, 0.1-30; copolymer of propylene and ethylene oxides of molecular mass 1000-10000 Da or a mixture of copolymers of propylene and ethylene oxides, 0.1-10.0. Modifying agent comprises a polyalcohol-base copolymer with number of hydroxyl groups 3-8 as an indicated copolymer of propylene and ethylene oxides. Invention provides the necessary level of inhibitory and surface-active properties for the drilling fluid, among them, under conditions of increased temperature.

EFFECT: improved and valuable properties of modifying agent.

2 cl, 5 tbl, 7 ex

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RU 2 286 373 C2

Authors

Safin Damir Khasanovich

Ashikhmin Gennadij Petrovich

Gajfutdinov Gamil' Shajkhutdinovich

Sharifullin Rafaehl' Rifkatovich

Makarov Gennadij Mikhajlovich

Dates

2006-10-27—Published

2004-11-15—Filed

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